Maksimović, A., Milović, L., Zečević, B., Aleksić, V.,& Bekrić, D.. (2024-06). Determination of the ductile-to-brittle transition temperature of NIOMOL 490 K steel welded joints. in Theoretical and Applied Fracture Mechanics
Elsevier B.V.., 131, 104404.
https://doi.org/10.1016/j.tafmec.2024.104404

Maksimović A, Milović L, Zečević B, Aleksić V, Bekrić D. Determination of the ductile-to-brittle transition temperature of NIOMOL 490 K steel welded joints. in Theoretical and Applied Fracture Mechanics. 2024;131:104404.
doi:10.1016/j.tafmec.2024.104404 .

Maksimović, Ana, Milović, Ljubica, Zečević, Bojana, Aleksić, Vujadin, Bekrić, Dragoljub, "Determination of the ductile-to-brittle transition temperature of NIOMOL 490 K steel welded joints" in Theoretical and Applied Fracture Mechanics, 131 (2024-06):104404,
https://doi.org/10.1016/j.tafmec.2024.104404 . .

TY  - CONF
AU  - Maksimović, Ana
AU  - Petrovski, Blagoj
AU  - Milović, Ljubica
AU  - Zečević, Bojana
AU  - Aleksić, Vujadin
AU  - Bulatović, Srđan
AU  - Bekrić, Dragoljub
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6625
AB  - Most serious weldment failures have catastrophic consequences in terms of damage to other equipment, loss of production, and risks to worker health and safety. For the above reasons, there is a tendency to find the line between safety and disaster, and this requires a guarantee of the integrity of the welded structure even if a crack is present. The structural and mechanical heterogeneity of a welded joint affects its resistance to cracking in both the elastic and plastic regions. Therefore, it is important to define the test method and the position of the fatigue crack. The behavior of an elasto-plastic material, during stable crack growth can be described by the J-Δa diagram. As the crack propagates, a point on the curve is defined, which represents the critical value of the J-integral. The aim of this experiment is to determine JIC value and the procedure is reflected in the determination of the R-curve, i.e., the J‒Δa curve, which consists of the value of the J-integral for uniform crack increments Δa. In this paper, precracked SEN(B) specimens with the fatigue crack positioned in the weld metal (WM) were tested according to standard ASTM E1820 at room temperature (RT), -20 0C and -30 0C.
PB  - Elsevier B.V.
C3  - Procedia Structural Integrity
T1  - Experimental Determination of JIc for a HSLA Steel Welded Joint
EP  - 194
SP  - 190
VL  - 48
DO  - 10.1016/j.prostr.2023.07.147
ER  - 

@conference{
author = "Maksimović, Ana and Petrovski, Blagoj and Milović, Ljubica and Zečević, Bojana and Aleksić, Vujadin and Bulatović, Srđan and Bekrić, Dragoljub",
year = "2023",
abstract = "Most serious weldment failures have catastrophic consequences in terms of damage to other equipment, loss of production, and risks to worker health and safety. For the above reasons, there is a tendency to find the line between safety and disaster, and this requires a guarantee of the integrity of the welded structure even if a crack is present. The structural and mechanical heterogeneity of a welded joint affects its resistance to cracking in both the elastic and plastic regions. Therefore, it is important to define the test method and the position of the fatigue crack. The behavior of an elasto-plastic material, during stable crack growth can be described by the J-Δa diagram. As the crack propagates, a point on the curve is defined, which represents the critical value of the J-integral. The aim of this experiment is to determine JIC value and the procedure is reflected in the determination of the R-curve, i.e., the J‒Δa curve, which consists of the value of the J-integral for uniform crack increments Δa. In this paper, precracked SEN(B) specimens with the fatigue crack positioned in the weld metal (WM) were tested according to standard ASTM E1820 at room temperature (RT), -20 0C and -30 0C.",
publisher = "Elsevier B.V.",
journal = "Procedia Structural Integrity",
title = "Experimental Determination of JIc for a HSLA Steel Welded Joint",
pages = "194-190",
volume = "48",
doi = "10.1016/j.prostr.2023.07.147"
}

Maksimović, A., Petrovski, B., Milović, L., Zečević, B., Aleksić, V., Bulatović, S.,& Bekrić, D.. (2023). Experimental Determination of JIc for a HSLA Steel Welded Joint. in Procedia Structural Integrity
Elsevier B.V.., 48, 190-194.
https://doi.org/10.1016/j.prostr.2023.07.147

Maksimović A, Petrovski B, Milović L, Zečević B, Aleksić V, Bulatović S, Bekrić D. Experimental Determination of JIc for a HSLA Steel Welded Joint. in Procedia Structural Integrity. 2023;48:190-194.
doi:10.1016/j.prostr.2023.07.147 .

Maksimović, Ana, Petrovski, Blagoj, Milović, Ljubica, Zečević, Bojana, Aleksić, Vujadin, Bulatović, Srđan, Bekrić, Dragoljub, "Experimental Determination of JIc for a HSLA Steel Welded Joint" in Procedia Structural Integrity, 48 (2023):190-194,
https://doi.org/10.1016/j.prostr.2023.07.147 . .

TY  - CONF
AU  - Zečević, Bojana
AU  - Maksimović, Ana
AU  - Milović, Ljubica
AU  - Aleksić, Vujadin
AU  - Bulatović, Srđan
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6626
AB  - The influence of temperature on the fatigue crack growth parameter, was analyzed by testing chromium-molybdenum steel of the new generation additionally alloyed with vanadium, designed for high temperatures application. The paper presents a comparison of the fatigue threshold value ΔKth and the fatigue crack growth rate da/dN of the specimens taken from the pipe made of virgin steel, tested at room (RT) and operating (HT) temperatures of 540 ◦C. The influence of the location of the notch and crack initiation, as well as the test temperature, have a decisive effect on the fatigue threshold values ΔKth of the chromium-molybdenum alloyed steel of the new generation additionally alloyed with vanadium for high temperatures application.
PB  - Elsevier B.V.
C3  - Procedia Structural Integrity
T1  - Fatigue crack growth rate of a low carbon microalloyed steel for high temperatures
EP  - 301
SP  - 296
VL  - 48
DO  - 10.1016/j.prostr.2023.07.129
ER  - 

@conference{
author = "Zečević, Bojana and Maksimović, Ana and Milović, Ljubica and Aleksić, Vujadin and Bulatović, Srđan",
year = "2023",
abstract = "The influence of temperature on the fatigue crack growth parameter, was analyzed by testing chromium-molybdenum steel of the new generation additionally alloyed with vanadium, designed for high temperatures application. The paper presents a comparison of the fatigue threshold value ΔKth and the fatigue crack growth rate da/dN of the specimens taken from the pipe made of virgin steel, tested at room (RT) and operating (HT) temperatures of 540 ◦C. The influence of the location of the notch and crack initiation, as well as the test temperature, have a decisive effect on the fatigue threshold values ΔKth of the chromium-molybdenum alloyed steel of the new generation additionally alloyed with vanadium for high temperatures application.",
publisher = "Elsevier B.V.",
journal = "Procedia Structural Integrity",
title = "Fatigue crack growth rate of a low carbon microalloyed steel for high temperatures",
pages = "301-296",
volume = "48",
doi = "10.1016/j.prostr.2023.07.129"
}

Zečević, B., Maksimović, A., Milović, L., Aleksić, V.,& Bulatović, S.. (2023). Fatigue crack growth rate of a low carbon microalloyed steel for high temperatures. in Procedia Structural Integrity
Elsevier B.V.., 48, 296-301.
https://doi.org/10.1016/j.prostr.2023.07.129

Zečević B, Maksimović A, Milović L, Aleksić V, Bulatović S. Fatigue crack growth rate of a low carbon microalloyed steel for high temperatures. in Procedia Structural Integrity. 2023;48:296-301.
doi:10.1016/j.prostr.2023.07.129 .

Zečević, Bojana, Maksimović, Ana, Milović, Ljubica, Aleksić, Vujadin, Bulatović, Srđan, "Fatigue crack growth rate of a low carbon microalloyed steel for high temperatures" in Procedia Structural Integrity, 48 (2023):296-301,
https://doi.org/10.1016/j.prostr.2023.07.129 . .

TY  - JOUR
AU  - Zečević, Bojana
AU  - Milović, Ljubica
AU  - Burzic, Z.
AU  - Maksimović, Ana
AU  - Aleksic, Vujadin
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5000
AB  - Due to its superior strength at high temperatures P/T91 steel is often applied in the chemical, petrochemical and fossil-fired power generation industries. The high strength is achieved by a suitable martensitic microstructure after appropriate heat treatment procedure. Welding is the most important process of joining the components in such plants, and the heat-affected zone is often the weakest part of these structures. Having in mind that the welded joint is the weakest area, it is necessary to know its properties and assess the level of its degradation. It was found that the life-limiting factor in case of P/T91 steel welded structures are the cracks located in the heat affected zones, more precisely in its intercritical region. In present paper the results of the fracture toughness measurement carried out on simulated P91 steel ICHAZ specimens produced using a weld simulator has been presented. The tests were done on two types of simulated specimens, those subjected to the subsequent PWHT and with those left untreated (without PWHT), at room temperature and 600 degrees C. For the J-integral estimation pin-loaded SEN(T) specimens were tested in plane stress conditions using the unloading compliance method of deriving a single specimen resistance curve and the eta-method.
T2  - Experimental Techniques
T1  - J-integral Analysis of the Simulated Heat-affected Zone of the Elevated-temperature Martensitic Steel
DO  - 10.1007/s40799-021-00487-9
ER  - 

@article{
author = "Zečević, Bojana and Milović, Ljubica and Burzic, Z. and Maksimović, Ana and Aleksic, Vujadin",
year = "2022",
abstract = "Due to its superior strength at high temperatures P/T91 steel is often applied in the chemical, petrochemical and fossil-fired power generation industries. The high strength is achieved by a suitable martensitic microstructure after appropriate heat treatment procedure. Welding is the most important process of joining the components in such plants, and the heat-affected zone is often the weakest part of these structures. Having in mind that the welded joint is the weakest area, it is necessary to know its properties and assess the level of its degradation. It was found that the life-limiting factor in case of P/T91 steel welded structures are the cracks located in the heat affected zones, more precisely in its intercritical region. In present paper the results of the fracture toughness measurement carried out on simulated P91 steel ICHAZ specimens produced using a weld simulator has been presented. The tests were done on two types of simulated specimens, those subjected to the subsequent PWHT and with those left untreated (without PWHT), at room temperature and 600 degrees C. For the J-integral estimation pin-loaded SEN(T) specimens were tested in plane stress conditions using the unloading compliance method of deriving a single specimen resistance curve and the eta-method.",
journal = "Experimental Techniques",
title = "J-integral Analysis of the Simulated Heat-affected Zone of the Elevated-temperature Martensitic Steel",
doi = "10.1007/s40799-021-00487-9"
}

Zečević, B., Milović, L., Burzic, Z., Maksimović, A.,& Aleksic, V.. (2022). J-integral Analysis of the Simulated Heat-affected Zone of the Elevated-temperature Martensitic Steel. in Experimental Techniques.
https://doi.org/10.1007/s40799-021-00487-9

Zečević B, Milović L, Burzic Z, Maksimović A, Aleksic V. J-integral Analysis of the Simulated Heat-affected Zone of the Elevated-temperature Martensitic Steel. in Experimental Techniques. 2022;.
doi:10.1007/s40799-021-00487-9 .

Zečević, Bojana, Milović, Ljubica, Burzic, Z., Maksimović, Ana, Aleksic, Vujadin, "J-integral Analysis of the Simulated Heat-affected Zone of the Elevated-temperature Martensitic Steel" in Experimental Techniques (2022),
https://doi.org/10.1007/s40799-021-00487-9 . .

TY  - CONF
AU  - Aleksić, Vujadin
AU  - Milović, Ljubica
AU  - Bulatović, Srđan
AU  - Zečević, Bojana
AU  - Maksimović, Ana
PY  - 2022
UR  - http://rims.institutims.rs/handle/123456789/416
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5126
AB  - The behavior of steel in low-cycle fatigue (LCF) is tested experimentally, in accordance with ISO 12106:2017 (E) and/or ASTM E 606-04. For this purpose, smooth specimens which are exposed to low-cycle fatigue at several levels of regulated strains and/or loads at room, elevated or reduced temperatures are used. Stress–strain response at LCF has the shape of an ideal hysteresis loop. The strain range Δε corresponds to overall loop width, while the stress range Δσ corresponds to its overall height. The paper presents a method for determining the intersection of the idealized hysteresis loop and the positive part of the strain axis in order to determine the values of elastic, Δεe/2, and plastic, Δεp/2, components of the strain amplitude to characterize the behavior of steel under low cyclic fatigue. The values of elastic and plastic components of the strain amplitude are needed to determine the characteristic curves of low-cycle fatigue, which describe the behavior of steel under the loading of low-cycle fatigue.
PB  - Springer Science and Business Media B.V.
C3  - Mechanisms and Machine Science
T1  - Determination of LCF Plastic and Elastic Strain Components of Steel
EP  - 349
SP  - 341
VL  - 109
DO  - 10.1007/978-3-030-88465-9_32
ER  - 

@conference{
author = "Aleksić, Vujadin and Milović, Ljubica and Bulatović, Srđan and Zečević, Bojana and Maksimović, Ana",
year = "2022",
abstract = "The behavior of steel in low-cycle fatigue (LCF) is tested experimentally, in accordance with ISO 12106:2017 (E) and/or ASTM E 606-04. For this purpose, smooth specimens which are exposed to low-cycle fatigue at several levels of regulated strains and/or loads at room, elevated or reduced temperatures are used. Stress–strain response at LCF has the shape of an ideal hysteresis loop. The strain range Δε corresponds to overall loop width, while the stress range Δσ corresponds to its overall height. The paper presents a method for determining the intersection of the idealized hysteresis loop and the positive part of the strain axis in order to determine the values of elastic, Δεe/2, and plastic, Δεp/2, components of the strain amplitude to characterize the behavior of steel under low cyclic fatigue. The values of elastic and plastic components of the strain amplitude are needed to determine the characteristic curves of low-cycle fatigue, which describe the behavior of steel under the loading of low-cycle fatigue.",
publisher = "Springer Science and Business Media B.V.",
journal = "Mechanisms and Machine Science",
title = "Determination of LCF Plastic and Elastic Strain Components of Steel",
pages = "349-341",
volume = "109",
doi = "10.1007/978-3-030-88465-9_32"
}

Aleksić, V., Milović, L., Bulatović, S., Zečević, B.,& Maksimović, A.. (2022). Determination of LCF Plastic and Elastic Strain Components of Steel. in Mechanisms and Machine Science
Springer Science and Business Media B.V.., 109, 341-349.
https://doi.org/10.1007/978-3-030-88465-9_32

Aleksić V, Milović L, Bulatović S, Zečević B, Maksimović A. Determination of LCF Plastic and Elastic Strain Components of Steel. in Mechanisms and Machine Science. 2022;109:341-349.
doi:10.1007/978-3-030-88465-9_32 .

Aleksić, Vujadin, Milović, Ljubica, Bulatović, Srđan, Zečević, Bojana, Maksimović, Ana, "Determination of LCF Plastic and Elastic Strain Components of Steel" in Mechanisms and Machine Science, 109 (2022):341-349,
https://doi.org/10.1007/978-3-030-88465-9_32 . .

TY  - JOUR
AU  - Aleksić, Vujadin
AU  - Bulatović, Srđan
AU  - Zečević, Bojana
AU  - Maksimović, Ana
AU  - Milović, Ljubica
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5290
AB  - The design of mechanical components exposed to fatigue load, at a low number of cycles, requires knowledge of the behaviour of the material under the impact of variable load in conditions of controlled strain when cyclic plasticity is present. The aim of testing the quality of the material of the components exposed to low cycle fatigue (LCF) in many industries: Nuclear, aerospace, mechanical, civil engineering and shipbuilding. In order to ensure the reliability and consistency of the results from different laboratories, it is necessary to collect all test data using test and data processing methodologies that are in accordance with a number of key points of ISO 12106: 2017 and/or ASTM E 606-04 standards. This paper defines a new data processing methodology after the LCF testing of steel.
PB  - University of Zagreb Faculty of Mechanical Engineering and Naval Architecture
T2  - Transactions of Famena
T1  - Processing of Data Obtained by the Testing of Steel under Low Cyclic Fatigue (Part I)
EP  - 72
IS  - 4
SP  - 59
VL  - 46
DO  - 10.21278/TOF.464041622
ER  - 

@article{
author = "Aleksić, Vujadin and Bulatović, Srđan and Zečević, Bojana and Maksimović, Ana and Milović, Ljubica",
year = "2022",
abstract = "The design of mechanical components exposed to fatigue load, at a low number of cycles, requires knowledge of the behaviour of the material under the impact of variable load in conditions of controlled strain when cyclic plasticity is present. The aim of testing the quality of the material of the components exposed to low cycle fatigue (LCF) in many industries: Nuclear, aerospace, mechanical, civil engineering and shipbuilding. In order to ensure the reliability and consistency of the results from different laboratories, it is necessary to collect all test data using test and data processing methodologies that are in accordance with a number of key points of ISO 12106: 2017 and/or ASTM E 606-04 standards. This paper defines a new data processing methodology after the LCF testing of steel.",
publisher = "University of Zagreb Faculty of Mechanical Engineering and Naval Architecture",
journal = "Transactions of Famena",
title = "Processing of Data Obtained by the Testing of Steel under Low Cyclic Fatigue (Part I)",
pages = "72-59",
number = "4",
volume = "46",
doi = "10.21278/TOF.464041622"
}

Aleksić, V., Bulatović, S., Zečević, B., Maksimović, A.,& Milović, L.. (2022). Processing of Data Obtained by the Testing of Steel under Low Cyclic Fatigue (Part I). in Transactions of Famena
University of Zagreb Faculty of Mechanical Engineering and Naval Architecture., 46(4), 59-72.
https://doi.org/10.21278/TOF.464041622

Aleksić V, Bulatović S, Zečević B, Maksimović A, Milović L. Processing of Data Obtained by the Testing of Steel under Low Cyclic Fatigue (Part I). in Transactions of Famena. 2022;46(4):59-72.
doi:10.21278/TOF.464041622 .

Aleksić, Vujadin, Bulatović, Srđan, Zečević, Bojana, Maksimović, Ana, Milović, Ljubica, "Processing of Data Obtained by the Testing of Steel under Low Cyclic Fatigue (Part I)" in Transactions of Famena, 46, no. 4 (2022):59-72,
https://doi.org/10.21278/TOF.464041622 . .

TY  - CONF
AU  - Zečević, Bojana
AU  - Maksimović, Ana
AU  - Milović, Ljubica
AU  - Aleksić, Vujadin
AU  - Grbović, Aleksandar
AU  - Bulatović, Srđan
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6423
AB  - Steel grade 14MoV6 3 is used for manufacturing of boilers and steam pipelines designed for steam temperatures up to 560 °C. This paper presents the numerical simulation of a CT-specimen, using the finite element method. The analysis was performed using Ansys Workbench R21, and represents the initial stage of extensive research involving the behaviour of 14MoV6 3 steel. The goal was to simulate the real experimental conditions, including boundary conditions and loads, which were defined in accordance with relevant standards, and to obtain representative results. The temperature dependent mechanical properties needed for the simulation of plastic behaviour of such specimens under tensile loads were obtained from the experimental data and the literature.
PB  - Elsevier B.V.
C3  - 23rd European Conference on Fracture, ECF 2022, Procedia Structural Integrity
T1  - Numerical simulation of 14Mov6-3 steel CT-specimen Fracture Behavior
EP  - 1496
SP  - 1483
VL  - 42
DO  - 10.1016/j.prostr.2022.12.189
ER  - 

@conference{
author = "Zečević, Bojana and Maksimović, Ana and Milović, Ljubica and Aleksić, Vujadin and Grbović, Aleksandar and Bulatović, Srđan",
year = "2022",
abstract = "Steel grade 14MoV6 3 is used for manufacturing of boilers and steam pipelines designed for steam temperatures up to 560 °C. This paper presents the numerical simulation of a CT-specimen, using the finite element method. The analysis was performed using Ansys Workbench R21, and represents the initial stage of extensive research involving the behaviour of 14MoV6 3 steel. The goal was to simulate the real experimental conditions, including boundary conditions and loads, which were defined in accordance with relevant standards, and to obtain representative results. The temperature dependent mechanical properties needed for the simulation of plastic behaviour of such specimens under tensile loads were obtained from the experimental data and the literature.",
publisher = "Elsevier B.V.",
journal = "23rd European Conference on Fracture, ECF 2022, Procedia Structural Integrity",
title = "Numerical simulation of 14Mov6-3 steel CT-specimen Fracture Behavior",
pages = "1496-1483",
volume = "42",
doi = "10.1016/j.prostr.2022.12.189"
}

Zečević, B., Maksimović, A., Milović, L., Aleksić, V., Grbović, A.,& Bulatović, S.. (2022). Numerical simulation of 14Mov6-3 steel CT-specimen Fracture Behavior. in 23rd European Conference on Fracture, ECF 2022, Procedia Structural Integrity
Elsevier B.V.., 42, 1483-1496.
https://doi.org/10.1016/j.prostr.2022.12.189

Zečević B, Maksimović A, Milović L, Aleksić V, Grbović A, Bulatović S. Numerical simulation of 14Mov6-3 steel CT-specimen Fracture Behavior. in 23rd European Conference on Fracture, ECF 2022, Procedia Structural Integrity. 2022;42:1483-1496.
doi:10.1016/j.prostr.2022.12.189 .

Zečević, Bojana, Maksimović, Ana, Milović, Ljubica, Aleksić, Vujadin, Grbović, Aleksandar, Bulatović, Srđan, "Numerical simulation of 14Mov6-3 steel CT-specimen Fracture Behavior" in 23rd European Conference on Fracture, ECF 2022, Procedia Structural Integrity, 42 (2022):1483-1496,
https://doi.org/10.1016/j.prostr.2022.12.189 . .

TY  - CONF
AU  - Zečević, Bojana
AU  - Maksimović, Ana
AU  - Milović, Ljubica
AU  - Bulatović, Srđan
AU  - Aleksić, Vujadin
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6429
AB  - Steel grade 14MoV6 3 is used for manufacturing of boilers and steam pipelines designed for steam temperatures up to 560°C. This paper presents the experimental analysis which included impact toughness test. The analysis resulted in impact energy values, and their respective components, crack initiation and crack propagation energy, and represents the initial stage of extensive research involving the behavior of 14MoV6 3 steel. The aim was to determine the effects of temperature (room vs. operated), as well as the effects of specimen orientation with regards to the rolling direction, on the impact toughness and the relation between its components.
PB  - Elsevier B.V.
C3  - 23rd European Conference on Fracture, ECF 2022, Procedia Structural Integrity
T1  - Effect of temperature and specimen orientation on Charpy impact toughness
EP  - 1482
SP  - 1475
VL  - 42
DO  - 10.1016/j.prostr.2022.12.188
ER  - 

@conference{
author = "Zečević, Bojana and Maksimović, Ana and Milović, Ljubica and Bulatović, Srđan and Aleksić, Vujadin",
year = "2022",
abstract = "Steel grade 14MoV6 3 is used for manufacturing of boilers and steam pipelines designed for steam temperatures up to 560°C. This paper presents the experimental analysis which included impact toughness test. The analysis resulted in impact energy values, and their respective components, crack initiation and crack propagation energy, and represents the initial stage of extensive research involving the behavior of 14MoV6 3 steel. The aim was to determine the effects of temperature (room vs. operated), as well as the effects of specimen orientation with regards to the rolling direction, on the impact toughness and the relation between its components.",
publisher = "Elsevier B.V.",
journal = "23rd European Conference on Fracture, ECF 2022, Procedia Structural Integrity",
title = "Effect of temperature and specimen orientation on Charpy impact toughness",
pages = "1482-1475",
volume = "42",
doi = "10.1016/j.prostr.2022.12.188"
}

Zečević, B., Maksimović, A., Milović, L., Bulatović, S.,& Aleksić, V.. (2022). Effect of temperature and specimen orientation on Charpy impact toughness. in 23rd European Conference on Fracture, ECF 2022, Procedia Structural Integrity
Elsevier B.V.., 42, 1475-1482.
https://doi.org/10.1016/j.prostr.2022.12.188

Zečević B, Maksimović A, Milović L, Bulatović S, Aleksić V. Effect of temperature and specimen orientation on Charpy impact toughness. in 23rd European Conference on Fracture, ECF 2022, Procedia Structural Integrity. 2022;42:1475-1482.
doi:10.1016/j.prostr.2022.12.188 .

Zečević, Bojana, Maksimović, Ana, Milović, Ljubica, Bulatović, Srđan, Aleksić, Vujadin, "Effect of temperature and specimen orientation on Charpy impact toughness" in 23rd European Conference on Fracture, ECF 2022, Procedia Structural Integrity, 42 (2022):1475-1482,
https://doi.org/10.1016/j.prostr.2022.12.188 . .

TY  - CONF
AU  - Maksimović, Ana
AU  - Milović, Ljubica
AU  - Zečević, Bojana
AU  - Đorđević, Branislav
AU  - Bulatović, Srđan
AU  - Aleksić, Vujadin
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6431
AB  - This paper is devoted to the ductile-brittle transition behavior of high strength low alloyed structural steel NIOMOL 490K. This steel grade is designed for welded pressure vessels exposed to dynamic loads, operating at temperatures below zero, and that is why it must have acceptable toughness. Due to its importance for the safety assessment of pressure vessels, a characterization of this steel with Charpy V-notch test in range of temperature between-60 0C and +60 0C was undertaken. Ductile-to-brittle transition temperature curves were generated in the present study by using instrumented Charpy pendulum impact test on V-notch specimens. Notches were located in the parent material, heat-affected zone and weld metal. The nil-ductility temperature and tensile properties in temperature range from -60 0C to +60 0C are presented in this paper. We used different test temperatures to better understand ductile-to brittle transition response than just use either Charpy energy or other related ductility criteria.
PB  - Elsevier B.V.
C3  - 23rd European Conference on Fracture, ECF 2022, Procedia Structural Integrity
T1  - Determination of ductile-to-brittle transition temperature of NIOMOL 490K steel welded joints
EP  - 1368
SP  - 1361
VL  - 42
DO  - 10.1016/j.prostr.2022.12.173
ER  - 

@conference{
author = "Maksimović, Ana and Milović, Ljubica and Zečević, Bojana and Đorđević, Branislav and Bulatović, Srđan and Aleksić, Vujadin",
year = "2022",
abstract = "This paper is devoted to the ductile-brittle transition behavior of high strength low alloyed structural steel NIOMOL 490K. This steel grade is designed for welded pressure vessels exposed to dynamic loads, operating at temperatures below zero, and that is why it must have acceptable toughness. Due to its importance for the safety assessment of pressure vessels, a characterization of this steel with Charpy V-notch test in range of temperature between-60 0C and +60 0C was undertaken. Ductile-to-brittle transition temperature curves were generated in the present study by using instrumented Charpy pendulum impact test on V-notch specimens. Notches were located in the parent material, heat-affected zone and weld metal. The nil-ductility temperature and tensile properties in temperature range from -60 0C to +60 0C are presented in this paper. We used different test temperatures to better understand ductile-to brittle transition response than just use either Charpy energy or other related ductility criteria.",
publisher = "Elsevier B.V.",
journal = "23rd European Conference on Fracture, ECF 2022, Procedia Structural Integrity",
title = "Determination of ductile-to-brittle transition temperature of NIOMOL 490K steel welded joints",
pages = "1368-1361",
volume = "42",
doi = "10.1016/j.prostr.2022.12.173"
}

Maksimović, A., Milović, L., Zečević, B., Đorđević, B., Bulatović, S.,& Aleksić, V.. (2022). Determination of ductile-to-brittle transition temperature of NIOMOL 490K steel welded joints. in 23rd European Conference on Fracture, ECF 2022, Procedia Structural Integrity
Elsevier B.V.., 42, 1361-1368.
https://doi.org/10.1016/j.prostr.2022.12.173

Maksimović A, Milović L, Zečević B, Đorđević B, Bulatović S, Aleksić V. Determination of ductile-to-brittle transition temperature of NIOMOL 490K steel welded joints. in 23rd European Conference on Fracture, ECF 2022, Procedia Structural Integrity. 2022;42:1361-1368.
doi:10.1016/j.prostr.2022.12.173 .

Maksimović, Ana, Milović, Ljubica, Zečević, Bojana, Đorđević, Branislav, Bulatović, Srđan, Aleksić, Vujadin, "Determination of ductile-to-brittle transition temperature of NIOMOL 490K steel welded joints" in 23rd European Conference on Fracture, ECF 2022, Procedia Structural Integrity, 42 (2022):1361-1368,
https://doi.org/10.1016/j.prostr.2022.12.173 . .

TY  - JOUR
AU  - Aleksić, Vujadin
AU  - Dojčinović, Marina
AU  - Milović, Ljubica
AU  - Zečević, Bojana
AU  - Maksimović, Ana
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5623
AB  - Polomljene epruvete za ispitivanje niskocikličnim zamorom čelika Nionikral 70 (NN-70) osnovnog materijala (OM) i simulirane zone pod uticajem toplote (SZUT) poslužile su NAM za izradu uzoraka za ispitivanje otpornosti na kavitaciju. Za ispitivanje u laboratorijskim uslovima primenjena je ultrazvučna vibraciona metoda kavitacije (metoda stacionarnog uzorka). Uslovi i procedura ispitivanja, priprema uzoraka kao i interpretacija rezultata definisani su standardom ASTM G32. Površine uzoraka čelika NN-70 OM i SZUT bile su izložene dejstvu kavitacije i praćenju oštećenja kroz određeno vreme. Merenje gubitka mase uzoraka na analitičkoj vagi posle određenog vremena omogućilo NAM je određivanje kavitacione brzine kao mere procene otpornosti materijala na dejstvo kavitacije. Za praćenje varijacija u morfologiji površine s promenom vremena ispitivanja primenjena je skenirajuća elektronska mikroskopija (SEM). Na osnovu rezultata ispitivanja otpornosti na kavitaciju u radu su analizirane morfologije oštećenja površina za različita vremena izlaganja dejstvu kavitacije uzoraka OM i SZUT čelika NN-70 kao i mehanizmi koji su doveli do oštećenja površina uzoraka.
AB  - Broken test tubes for low-cycle fatigue testing of Nionicral 70 (NN-70) parent material (PM) steel and simulated heat-affected zones (SHAZ) were used to produce samples for cavitation resistance testing. Ultrasonic vibrational cavitation method (stationary sample method) was applied for testing in laboratory conditions. The test conditions and procedure, sample preparation and interpretation of results are defined by ASTM G32. The surfaces of the NN-70 PM and SHAZ steel samples were exposed to cavitation and damage monitoring over time. Measuring the weight loss of samples on the analytical balance after a certain time allowed us to determine the cavitation velocity as a measure of the material's resistance to the effect of cavitation. Scanning electron microscopy (SEM) was applied to monitor variations in surface morphology with changing test time. On the basis of the results of the cavitation resistance test, the morphologies of the surface damage for different exposure times of the cavitation of PM and SHAZ steel NN-70 samples were analyzed, as well as the mechanisms that led to the damage of the sample surfaces.
PB  - Inženjersko društvo za koroziju, Beograd
T2  - Zaštita materijala
T1  - Mehanizmi i morfologije kavitacionog oštećenja čelika Nionikral 70
T1  - Mechanisms and morphologies of cavitation damage of NN 70 steel
EP  - 105
IS  - 2
SP  - 95
VL  - 2021
DO  - 10.5937/zasmat2102095A
ER  - 

@article{
author = "Aleksić, Vujadin and Dojčinović, Marina and Milović, Ljubica and Zečević, Bojana and Maksimović, Ana",
year = "2021",
abstract = "Polomljene epruvete za ispitivanje niskocikličnim zamorom čelika Nionikral 70 (NN-70) osnovnog materijala (OM) i simulirane zone pod uticajem toplote (SZUT) poslužile su NAM za izradu uzoraka za ispitivanje otpornosti na kavitaciju. Za ispitivanje u laboratorijskim uslovima primenjena je ultrazvučna vibraciona metoda kavitacije (metoda stacionarnog uzorka). Uslovi i procedura ispitivanja, priprema uzoraka kao i interpretacija rezultata definisani su standardom ASTM G32. Površine uzoraka čelika NN-70 OM i SZUT bile su izložene dejstvu kavitacije i praćenju oštećenja kroz određeno vreme. Merenje gubitka mase uzoraka na analitičkoj vagi posle određenog vremena omogućilo NAM je određivanje kavitacione brzine kao mere procene otpornosti materijala na dejstvo kavitacije. Za praćenje varijacija u morfologiji površine s promenom vremena ispitivanja primenjena je skenirajuća elektronska mikroskopija (SEM). Na osnovu rezultata ispitivanja otpornosti na kavitaciju u radu su analizirane morfologije oštećenja površina za različita vremena izlaganja dejstvu kavitacije uzoraka OM i SZUT čelika NN-70 kao i mehanizmi koji su doveli do oštećenja površina uzoraka., Broken test tubes for low-cycle fatigue testing of Nionicral 70 (NN-70) parent material (PM) steel and simulated heat-affected zones (SHAZ) were used to produce samples for cavitation resistance testing. Ultrasonic vibrational cavitation method (stationary sample method) was applied for testing in laboratory conditions. The test conditions and procedure, sample preparation and interpretation of results are defined by ASTM G32. The surfaces of the NN-70 PM and SHAZ steel samples were exposed to cavitation and damage monitoring over time. Measuring the weight loss of samples on the analytical balance after a certain time allowed us to determine the cavitation velocity as a measure of the material's resistance to the effect of cavitation. Scanning electron microscopy (SEM) was applied to monitor variations in surface morphology with changing test time. On the basis of the results of the cavitation resistance test, the morphologies of the surface damage for different exposure times of the cavitation of PM and SHAZ steel NN-70 samples were analyzed, as well as the mechanisms that led to the damage of the sample surfaces.",
publisher = "Inženjersko društvo za koroziju, Beograd",
journal = "Zaštita materijala",
title = "Mehanizmi i morfologije kavitacionog oštećenja čelika Nionikral 70, Mechanisms and morphologies of cavitation damage of NN 70 steel",
pages = "105-95",
number = "2",
volume = "2021",
doi = "10.5937/zasmat2102095A"
}

Aleksić, V., Dojčinović, M., Milović, L., Zečević, B.,& Maksimović, A.. (2021). Mehanizmi i morfologije kavitacionog oštećenja čelika Nionikral 70. in Zaštita materijala
Inženjersko društvo za koroziju, Beograd., 2021(2), 95-105.
https://doi.org/10.5937/zasmat2102095A

Aleksić V, Dojčinović M, Milović L, Zečević B, Maksimović A. Mehanizmi i morfologije kavitacionog oštećenja čelika Nionikral 70. in Zaštita materijala. 2021;2021(2):95-105.
doi:10.5937/zasmat2102095A .

Aleksić, Vujadin, Dojčinović, Marina, Milović, Ljubica, Zečević, Bojana, Maksimović, Ana, "Mehanizmi i morfologije kavitacionog oštećenja čelika Nionikral 70" in Zaštita materijala, 2021, no. 2 (2021):95-105,
https://doi.org/10.5937/zasmat2102095A . .

TY  - JOUR
AU  - Aranđelović, M.
AU  - Sedmak, S. A.
AU  - Milović, Ljubica
AU  - Maksimović, Ana
AU  - Bozic, Z.
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4754
AB  - Crack propagation in 3PB specimen has been investigated experimentally by using Digital Image Correlation (DIC) technique. For this purpose, specimens were taken from butt welded plates, made of P460NL1 micro-alloyed steel. Fatigue pre-crack of 3PB specimens was introduced in the weld metal. Specimens were then statically loaded and analyzed using digital image correlation software ARAMIS to assess strain fields and crack propagation paths. Bifurcation of cracks was noticed as the main characteristics of crack prop-agation in the analyzed case.
T2  - 1st Virtual European Conference on Fracture - Vecf1
T1  - Crack propagation in 3PB specimen made from welded joint
EP  - 445
SP  - 440
VL  - 28
DO  - 10.1016/j.prostr.2020.10.051
ER  - 

@article{
author = "Aranđelović, M. and Sedmak, S. A. and Milović, Ljubica and Maksimović, Ana and Bozic, Z.",
year = "2020",
abstract = "Crack propagation in 3PB specimen has been investigated experimentally by using Digital Image Correlation (DIC) technique. For this purpose, specimens were taken from butt welded plates, made of P460NL1 micro-alloyed steel. Fatigue pre-crack of 3PB specimens was introduced in the weld metal. Specimens were then statically loaded and analyzed using digital image correlation software ARAMIS to assess strain fields and crack propagation paths. Bifurcation of cracks was noticed as the main characteristics of crack prop-agation in the analyzed case.",
journal = "1st Virtual European Conference on Fracture - Vecf1",
title = "Crack propagation in 3PB specimen made from welded joint",
pages = "445-440",
volume = "28",
doi = "10.1016/j.prostr.2020.10.051"
}

Aranđelović, M., Sedmak, S. A., Milović, L., Maksimović, A.,& Bozic, Z.. (2020). Crack propagation in 3PB specimen made from welded joint. in 1st Virtual European Conference on Fracture - Vecf1, 28, 440-445.
https://doi.org/10.1016/j.prostr.2020.10.051

Aranđelović M, Sedmak SA, Milović L, Maksimović A, Bozic Z. Crack propagation in 3PB specimen made from welded joint. in 1st Virtual European Conference on Fracture - Vecf1. 2020;28:440-445.
doi:10.1016/j.prostr.2020.10.051 .

Aranđelović, M., Sedmak, S. A., Milović, Ljubica, Maksimović, Ana, Bozic, Z., "Crack propagation in 3PB specimen made from welded joint" in 1st Virtual European Conference on Fracture - Vecf1, 28 (2020):440-445,
https://doi.org/10.1016/j.prostr.2020.10.051 . .

TY  - JOUR
AU  - Aleksić, Vujadin
AU  - Aleksić, Bojana
AU  - Prodanović, Ana
AU  - Milović, Ljubica
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4572
AB  - In present paper, based on the results of the experimental study of the behaviour of the samples made of a HSLA steel, in the form of round smooth specimens (RSS) under LCF conditions (with controlled and completely reversible strain Δε/2 = const, Rε = εmin/εmax = −1, according to ISO 12106: 2003 (E)) and square specimens (SqS) under conditions of HCF conditions (with controlled one-way variable load on tension with σmin = const, according to ISO 12110-1:2013), a computational stress analysis was performed using the FE method and the behaviour of this steel in the fatigue behaviour simulation (LCF and HCF) in SolidWorks programme was shown. On the basis of the performed analysis of the results of the stress-strain state and the determination of the life using the life isolines for a particular load cycle involving the entire RSS ligament, i.e. SqS for a particular load in a wide range of LCF and HCF loads and comparison with the results of experimental tests, a figure i.e. graphical presentation was given and conclusions were drawn that justify the efforts for numerical assessment of the life cycle of the loaded machine parts.
PB  - International Conference on New Technologies, Development and Application, NT 2020
T2  - Lecture Notes in Networks and Systems
T1  - HSLA Steel - Simulation of Fatigue
EP  - 321
SP  - 314
VL  - 128 LNNS
DO  - 10.1007/978-3-030-46817-0_36
ER  - 

@article{
author = "Aleksić, Vujadin and Aleksić, Bojana and Prodanović, Ana and Milović, Ljubica",
year = "2020",
abstract = "In present paper, based on the results of the experimental study of the behaviour of the samples made of a HSLA steel, in the form of round smooth specimens (RSS) under LCF conditions (with controlled and completely reversible strain Δε/2 = const, Rε = εmin/εmax = −1, according to ISO 12106: 2003 (E)) and square specimens (SqS) under conditions of HCF conditions (with controlled one-way variable load on tension with σmin = const, according to ISO 12110-1:2013), a computational stress analysis was performed using the FE method and the behaviour of this steel in the fatigue behaviour simulation (LCF and HCF) in SolidWorks programme was shown. On the basis of the performed analysis of the results of the stress-strain state and the determination of the life using the life isolines for a particular load cycle involving the entire RSS ligament, i.e. SqS for a particular load in a wide range of LCF and HCF loads and comparison with the results of experimental tests, a figure i.e. graphical presentation was given and conclusions were drawn that justify the efforts for numerical assessment of the life cycle of the loaded machine parts.",
publisher = "International Conference on New Technologies, Development and Application, NT 2020",
journal = "Lecture Notes in Networks and Systems",
title = "HSLA Steel - Simulation of Fatigue",
pages = "321-314",
volume = "128 LNNS",
doi = "10.1007/978-3-030-46817-0_36"
}

Aleksić, V., Aleksić, B., Prodanović, A.,& Milović, L.. (2020). HSLA Steel - Simulation of Fatigue. in Lecture Notes in Networks and Systems
International Conference on New Technologies, Development and Application, NT 2020., 128 LNNS, 314-321.
https://doi.org/10.1007/978-3-030-46817-0_36

Aleksić V, Aleksić B, Prodanović A, Milović L. HSLA Steel - Simulation of Fatigue. in Lecture Notes in Networks and Systems. 2020;128 LNNS:314-321.
doi:10.1007/978-3-030-46817-0_36 .

Aleksić, Vujadin, Aleksić, Bojana, Prodanović, Ana, Milović, Ljubica, "HSLA Steel - Simulation of Fatigue" in Lecture Notes in Networks and Systems, 128 LNNS (2020):314-321,
https://doi.org/10.1007/978-3-030-46817-0_36 . .