TY  - JOUR
AU  - Erić-Cekić, O.
AU  - Dojčinović, Marina
AU  - Rajnović, Dragan
AU  - Šiđanin, Leposava
AU  - Baloš, Sebastijan
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3858
AB  - In this paper, the study of cavitation behaviour of austempered ductile iron (ADI) alloyed with copper, as well as copper and nickel with a fully ausferritic microstructure, is presented. The ADI materials used were austenitized at 900 degrees C and austempered at 350 degrees C having an ausferrite microstructure with 16 and 19% of austenite, respectively. The experimental investigations were conducted using the ultrasonically induced cavitation test method. The results show that the cavitation damage was initiated at graphite nodules, as well as in the interface between a graphite nodule and an ausferrite matrix. The cavitation rate revealed that the ADI material alloyed with Cu + Ni austempered at 350 degrees C/3h has a higher cavitation resistance in water than ADI alloyed with Cu. An increased cavitation resistance of the ADI material alloyed with Cu and Ni is due to the matrix hardening by stress assisted phase transformation of austenite into the martensite (SATRAM) phenomenon.
PB  - Taylor & Francis Ltd, Abingdon
T2  - International Journal of Cast Metals Research
T1  - Microstructure and cavitation behaviour of alloyed austempered ductile irons
EP  - 287
IS  - 5
SP  - 279
VL  - 31
DO  - 10.1080/13640461.2018.1446385
ER  - 

@article{
author = "Erić-Cekić, O. and Dojčinović, Marina and Rajnović, Dragan and Šiđanin, Leposava and Baloš, Sebastijan",
year = "2018",
abstract = "In this paper, the study of cavitation behaviour of austempered ductile iron (ADI) alloyed with copper, as well as copper and nickel with a fully ausferritic microstructure, is presented. The ADI materials used were austenitized at 900 degrees C and austempered at 350 degrees C having an ausferrite microstructure with 16 and 19% of austenite, respectively. The experimental investigations were conducted using the ultrasonically induced cavitation test method. The results show that the cavitation damage was initiated at graphite nodules, as well as in the interface between a graphite nodule and an ausferrite matrix. The cavitation rate revealed that the ADI material alloyed with Cu + Ni austempered at 350 degrees C/3h has a higher cavitation resistance in water than ADI alloyed with Cu. An increased cavitation resistance of the ADI material alloyed with Cu and Ni is due to the matrix hardening by stress assisted phase transformation of austenite into the martensite (SATRAM) phenomenon.",
publisher = "Taylor & Francis Ltd, Abingdon",
journal = "International Journal of Cast Metals Research",
title = "Microstructure and cavitation behaviour of alloyed austempered ductile irons",
pages = "287-279",
number = "5",
volume = "31",
doi = "10.1080/13640461.2018.1446385"
}

Erić-Cekić, O., Dojčinović, M., Rajnović, D., Šiđanin, L.,& Baloš, S.. (2018). Microstructure and cavitation behaviour of alloyed austempered ductile irons. in International Journal of Cast Metals Research
Taylor & Francis Ltd, Abingdon., 31(5), 279-287.
https://doi.org/10.1080/13640461.2018.1446385

Erić-Cekić O, Dojčinović M, Rajnović D, Šiđanin L, Baloš S. Microstructure and cavitation behaviour of alloyed austempered ductile irons. in International Journal of Cast Metals Research. 2018;31(5):279-287.
doi:10.1080/13640461.2018.1446385 .

Erić-Cekić, O., Dojčinović, Marina, Rajnović, Dragan, Šiđanin, Leposava, Baloš, Sebastijan, "Microstructure and cavitation behaviour of alloyed austempered ductile irons" in International Journal of Cast Metals Research, 31, no. 5 (2018):279-287,
https://doi.org/10.1080/13640461.2018.1446385 . .

TY  - JOUR
AU  - Dojčinović, Marina
AU  - Erić, Olivera
AU  - Rajnović, Dragan
AU  - Šiđanin, Leposava
AU  - Baloš, Sebastijan
PY  - 2013
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2430
AB  - This paper provides an in-depth study and description of cavitation damage and microstructural changes in two types of unalloyed austempered ductile iron (ADI). ADI materials used were austempered at 300 and 400 degrees C having ausferrite microstructure with 16 and 31.4% of retained austenite, respectively. Metallographic examination was carried out to study the morphology of their cavitation-damaged surfaces. Cavitation damage was initiated at graphite nodules as well as in the interface between a graphite nodule and an ausferrite matrix. Furthermore, microcracking and ferrite/retained austenite morphology were proved to be of great importance for cavitation resistance. Mass loss rate revealed that ADI austempered at 400 degrees C has a higher cavitation resistance in water than ADI austempered at 300 degrees C. A higher amount of retained austenite in ADI austempered at 400 degrees C played an important role in increasing cavitation resistance. The good cavitation behaviour of ADI austempered at 400 degrees C was due to the matrix hardening by stress assisted phase transformation of retained austenite into martensite (SATRAM) phenomenon, as shown by X-ray diffraction analysis.
PB  - Elsevier Science Inc, New York
T2  - Materials Characterization
T1  - Effect of austempering temperature on cavitation behaviour of unalloyed ADI material
EP  - 72
SP  - 66
VL  - 82
DO  - 10.1016/j.matchar.2013.05.005
ER  - 

@article{
author = "Dojčinović, Marina and Erić, Olivera and Rajnović, Dragan and Šiđanin, Leposava and Baloš, Sebastijan",
year = "2013",
abstract = "This paper provides an in-depth study and description of cavitation damage and microstructural changes in two types of unalloyed austempered ductile iron (ADI). ADI materials used were austempered at 300 and 400 degrees C having ausferrite microstructure with 16 and 31.4% of retained austenite, respectively. Metallographic examination was carried out to study the morphology of their cavitation-damaged surfaces. Cavitation damage was initiated at graphite nodules as well as in the interface between a graphite nodule and an ausferrite matrix. Furthermore, microcracking and ferrite/retained austenite morphology were proved to be of great importance for cavitation resistance. Mass loss rate revealed that ADI austempered at 400 degrees C has a higher cavitation resistance in water than ADI austempered at 300 degrees C. A higher amount of retained austenite in ADI austempered at 400 degrees C played an important role in increasing cavitation resistance. The good cavitation behaviour of ADI austempered at 400 degrees C was due to the matrix hardening by stress assisted phase transformation of retained austenite into martensite (SATRAM) phenomenon, as shown by X-ray diffraction analysis.",
publisher = "Elsevier Science Inc, New York",
journal = "Materials Characterization",
title = "Effect of austempering temperature on cavitation behaviour of unalloyed ADI material",
pages = "72-66",
volume = "82",
doi = "10.1016/j.matchar.2013.05.005"
}

Dojčinović, M., Erić, O., Rajnović, D., Šiđanin, L.,& Baloš, S.. (2013). Effect of austempering temperature on cavitation behaviour of unalloyed ADI material. in Materials Characterization
Elsevier Science Inc, New York., 82, 66-72.
https://doi.org/10.1016/j.matchar.2013.05.005

Dojčinović M, Erić O, Rajnović D, Šiđanin L, Baloš S. Effect of austempering temperature on cavitation behaviour of unalloyed ADI material. in Materials Characterization. 2013;82:66-72.
doi:10.1016/j.matchar.2013.05.005 .

Dojčinović, Marina, Erić, Olivera, Rajnović, Dragan, Šiđanin, Leposava, Baloš, Sebastijan, "Effect of austempering temperature on cavitation behaviour of unalloyed ADI material" in Materials Characterization, 82 (2013):66-72,
https://doi.org/10.1016/j.matchar.2013.05.005 . .

TY  - JOUR
AU  - Dojčinović, Marina
AU  - Erić, Olivera
AU  - Rajnović, Dragan
AU  - Šiđanin, Leposava
AU  - Baloš, Sebastijan
PY  - 2012
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2057
AB  - The study was designed to investigate the cavitation behavior of the ductile cast iron with microstructure consisting of spheroidal graphite in a predominantly ferrite matrix with 10% pearlite. The experiments were conducted using the ultrasonically induced cavitation test method. The frequency of vibration and the peak-to-peak displacement amplitude of the horn were 20±0.5 kHz and 50ìm, respectively, with separation of 0.5 mm between the sample and the horn tip. In order to obtain the erosion curve, the mass loss measurements were performed after each exposure interval. The mass loss was recorded every 30min for a test period of 240 min. Roughness parameter Ra (the mean roughness), was used to characterize the surfaces. The cavitation rate was 1.85 higher for ductile iron compared with that of carbon steel with similar hardness, because graphite removal produces high stress concentration in cast iron. Compared with conventional mass loss measurements in assessing material degradation in cavitation erosion, surface roughness measurements provide an alternative and convenient method.
PB  - Association of Metallurgical Engineers of Serbia
T2  - Metallurgical & Materials Engineering
T1  - The morphology of ductile cast iron surface damaged by cavitation
EP  - 176
IS  - 3
SP  - 165
VL  - 18
UR  - https://hdl.handle.net/21.15107/rcub_technorep_2057
ER  - 

@article{
author = "Dojčinović, Marina and Erić, Olivera and Rajnović, Dragan and Šiđanin, Leposava and Baloš, Sebastijan",
year = "2012",
abstract = "The study was designed to investigate the cavitation behavior of the ductile cast iron with microstructure consisting of spheroidal graphite in a predominantly ferrite matrix with 10% pearlite. The experiments were conducted using the ultrasonically induced cavitation test method. The frequency of vibration and the peak-to-peak displacement amplitude of the horn were 20±0.5 kHz and 50ìm, respectively, with separation of 0.5 mm between the sample and the horn tip. In order to obtain the erosion curve, the mass loss measurements were performed after each exposure interval. The mass loss was recorded every 30min for a test period of 240 min. Roughness parameter Ra (the mean roughness), was used to characterize the surfaces. The cavitation rate was 1.85 higher for ductile iron compared with that of carbon steel with similar hardness, because graphite removal produces high stress concentration in cast iron. Compared with conventional mass loss measurements in assessing material degradation in cavitation erosion, surface roughness measurements provide an alternative and convenient method.",
publisher = "Association of Metallurgical Engineers of Serbia",
journal = "Metallurgical & Materials Engineering",
title = "The morphology of ductile cast iron surface damaged by cavitation",
pages = "176-165",
number = "3",
volume = "18",
url = "https://hdl.handle.net/21.15107/rcub_technorep_2057"
}

Dojčinović, M., Erić, O., Rajnović, D., Šiđanin, L.,& Baloš, S.. (2012). The morphology of ductile cast iron surface damaged by cavitation. in Metallurgical & Materials Engineering
Association of Metallurgical Engineers of Serbia., 18(3), 165-176.
https://hdl.handle.net/21.15107/rcub_technorep_2057

Dojčinović M, Erić O, Rajnović D, Šiđanin L, Baloš S. The morphology of ductile cast iron surface damaged by cavitation. in Metallurgical & Materials Engineering. 2012;18(3):165-176.
https://hdl.handle.net/21.15107/rcub_technorep_2057 .

Dojčinović, Marina, Erić, Olivera, Rajnović, Dragan, Šiđanin, Leposava, Baloš, Sebastijan, "The morphology of ductile cast iron surface damaged by cavitation" in Metallurgical & Materials Engineering, 18, no. 3 (2012):165-176,
https://hdl.handle.net/21.15107/rcub_technorep_2057 .