TY  - CONF
AU  - Katavić, Boris T.
AU  - Gligorijević, Bojan R.
AU  - Alil, Ana
AU  - Odanović, Zoran
PY  - 2013
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6190
AB  - The precipitation behavior of W-rich phase on the specific matrix locations of 
Co-free and Co-containing 92.5W-5Ni-2.5Fe heavy alloys is investigated during 
aging of the as-quenched samples. The aging treatment is performed between 600 
°C (873 K) and 800 °C (1073 K) and for aging time up to 9 hours. The average 
chemical composition of tungsten heavy alloys was determined by using the atomic 
absorption spectrophotometry (AAS) and the Leco apparatus. The Energy 
Dispersive X-ray (EDX) analysis was employed to analyze the chemistry of the 
existing phases. The changes in structure as a function of aging time and 
temperature have been examined by using the light microscopy (LM) and the 
scaning electron microscopy (SEM). The macro- and micro-hardness 
measurements were performed, as well. The local changes in matrix structure and 
various morphologies of the precipitates are observed. The aging has caused only 
a minor changes of the micro-hardness of the existing phases (γ and W-rich) as 
well as the macro-hardness of the investigated alloys. In the case of the Co-free 
92.5W-5Ni-2.5Fe heavy alloy, at lower temperatures and for shorter time of aging, 
there is a dominant presence of lamellar and Widmanstätten morphology of W-rich 
precipitates within the γ-matrix grains. At higher temperatures and for longer time, 
there is a significant precipitation of W-rich precipitates at the matrix grain 
boundaries (γ/γ). In the case of 92.5W-5Ni-2.5Fe heavy alloy micro-alloyed with 
Co, it is dominant precipitation of W-rich phase at the matrix grain boundaries (γ/γ), 
especially at higher aging temperatures and for longer aging time.
PB  - Association of Metallurgical Engineers of Serbia (AMES), Beograd
C3  - Programme and book of abstracts of the 1st Metallurgical and Materials Engineering Congress of South-East Europe
T1  - The effects of aging on the precipitation of the W-rich phase in the matrix of the 92.5W-5Ni-2,5Fe powder metallurgy heavy alloys
SP  - 435
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6190
ER  - 

@conference{
author = "Katavić, Boris T. and Gligorijević, Bojan R. and Alil, Ana and Odanović, Zoran",
year = "2013",
abstract = "The precipitation behavior of W-rich phase on the specific matrix locations of 
Co-free and Co-containing 92.5W-5Ni-2.5Fe heavy alloys is investigated during 
aging of the as-quenched samples. The aging treatment is performed between 600 
°C (873 K) and 800 °C (1073 K) and for aging time up to 9 hours. The average 
chemical composition of tungsten heavy alloys was determined by using the atomic 
absorption spectrophotometry (AAS) and the Leco apparatus. The Energy 
Dispersive X-ray (EDX) analysis was employed to analyze the chemistry of the 
existing phases. The changes in structure as a function of aging time and 
temperature have been examined by using the light microscopy (LM) and the 
scaning electron microscopy (SEM). The macro- and micro-hardness 
measurements were performed, as well. The local changes in matrix structure and 
various morphologies of the precipitates are observed. The aging has caused only 
a minor changes of the micro-hardness of the existing phases (γ and W-rich) as 
well as the macro-hardness of the investigated alloys. In the case of the Co-free 
92.5W-5Ni-2.5Fe heavy alloy, at lower temperatures and for shorter time of aging, 
there is a dominant presence of lamellar and Widmanstätten morphology of W-rich 
precipitates within the γ-matrix grains. At higher temperatures and for longer time, 
there is a significant precipitation of W-rich precipitates at the matrix grain 
boundaries (γ/γ). In the case of 92.5W-5Ni-2.5Fe heavy alloy micro-alloyed with 
Co, it is dominant precipitation of W-rich phase at the matrix grain boundaries (γ/γ), 
especially at higher aging temperatures and for longer aging time.",
publisher = "Association of Metallurgical Engineers of Serbia (AMES), Beograd",
journal = "Programme and book of abstracts of the 1st Metallurgical and Materials Engineering Congress of South-East Europe",
title = "The effects of aging on the precipitation of the W-rich phase in the matrix of the 92.5W-5Ni-2,5Fe powder metallurgy heavy alloys",
pages = "435",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6190"
}

Katavić, B. T., Gligorijević, B. R., Alil, A.,& Odanović, Z.. (2013). The effects of aging on the precipitation of the W-rich phase in the matrix of the 92.5W-5Ni-2,5Fe powder metallurgy heavy alloys. in Programme and book of abstracts of the 1st Metallurgical and Materials Engineering Congress of South-East Europe
Association of Metallurgical Engineers of Serbia (AMES), Beograd., 435.
https://hdl.handle.net/21.15107/rcub_technorep_6190

Katavić BT, Gligorijević BR, Alil A, Odanović Z. The effects of aging on the precipitation of the W-rich phase in the matrix of the 92.5W-5Ni-2,5Fe powder metallurgy heavy alloys. in Programme and book of abstracts of the 1st Metallurgical and Materials Engineering Congress of South-East Europe. 2013;:435.
https://hdl.handle.net/21.15107/rcub_technorep_6190 .

Katavić, Boris T., Gligorijević, Bojan R., Alil, Ana, Odanović, Zoran, "The effects of aging on the precipitation of the W-rich phase in the matrix of the 92.5W-5Ni-2,5Fe powder metallurgy heavy alloys" in Programme and book of abstracts of the 1st Metallurgical and Materials Engineering Congress of South-East Europe (2013):435,
https://hdl.handle.net/21.15107/rcub_technorep_6190 .

TY  - JOUR
AU  - Budimir, Stevan
AU  - Alil, Ana
AU  - Ristić, Marko
AU  - Kočić, Milorad
AU  - Katavić, Boris T.
PY  - 2013
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6215
PB  - The Bulletin of the National R&D Institute for Welding and Material Testing - ISIM Timişoara, Romania
T2  - The journal Welding and Material Testing / Sudarea şi Încercarea Materialelor - Bulletin of the National Research
T1  - Analysis of compressor valves bolts failure
EP  - 16
IS  - 4
SP  - 13
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6215
ER  - 

@article{
author = "Budimir, Stevan and Alil, Ana and Ristić, Marko and Kočić, Milorad and Katavić, Boris T.",
year = "2013",
publisher = "The Bulletin of the National R&D Institute for Welding and Material Testing - ISIM Timişoara, Romania",
journal = "The journal Welding and Material Testing / Sudarea şi Încercarea Materialelor - Bulletin of the National Research",
title = "Analysis of compressor valves bolts failure",
pages = "16-13",
number = "4",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6215"
}

Budimir, S., Alil, A., Ristić, M., Kočić, M.,& Katavić, B. T.. (2013). Analysis of compressor valves bolts failure. in The journal Welding and Material Testing / Sudarea şi Încercarea Materialelor - Bulletin of the National Research
The Bulletin of the National R&D Institute for Welding and Material Testing - ISIM Timişoara, Romania.(4), 13-16.
https://hdl.handle.net/21.15107/rcub_technorep_6215

Budimir S, Alil A, Ristić M, Kočić M, Katavić BT. Analysis of compressor valves bolts failure. in The journal Welding and Material Testing / Sudarea şi Încercarea Materialelor - Bulletin of the National Research. 2013;(4):13-16.
https://hdl.handle.net/21.15107/rcub_technorep_6215 .

Budimir, Stevan, Alil, Ana, Ristić, Marko, Kočić, Milorad, Katavić, Boris T., "Analysis of compressor valves bolts failure" in The journal Welding and Material Testing / Sudarea şi Încercarea Materialelor - Bulletin of the National Research, no. 4 (2013):13-16,
https://hdl.handle.net/21.15107/rcub_technorep_6215 .

TY  - CONF
AU  - Alil, Ana
AU  - Jegdić, Bore V.
AU  - Bobić, Biljana
AU  - Radosavljević, Miroslav
AU  - Katavić, Boris
PY  - 2012
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6093
AB  - Stress corrosion cracking (SCC) was tested in a high strength 7000 series aluminium alloy applied for
weapons and military equipment. The effect of one step- and two-step precipitation hardening (aging) on SCC was
investigated. The slow strain rate test (SSRT) and the fracture mechanics (FM) method were used for SCC testing. The
measurements of electrical resistivity allowed evaluating an aging degree in the tested alloy. Both testing methods have
shown that the alloy after two-step precipitation hardening is significantly more resistant to SCC. The critical stress
intensity factor for SCC, KISCC is significantly higher, and the crack growth rate on the plateau, vpl is more than one
order of magnitude lower for the alloy in this state. Processes that take place at the crack tip are proposed and the
effect of copper was analyzed. The effect of the testing solution (NaCl) temperature on the vpl was determined. Two
values of the apparent activation energy, Ea, were obtained; one value (46.6 kJ mol-1) refers to higher temperatures,
while the other (70.4 kJ mol-1) refers to lower test temperatures. These values of Ea correspond to the different
processes that control the vpl, at higher and lower temperatures.
PB  - Military Technical Institute
C3  - 5th International Scientific Conference on Defensive Technologies
T1  - STRESS CORROSION CRACKING OF AN AL-ZN-MG-CU ALLOY AFTER DIFFERENT PRECIPITATION HARDENING TREATMENTS
EP  - 587
SP  - 582
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6093
ER  - 

@conference{
author = "Alil, Ana and Jegdić, Bore V. and Bobić, Biljana and Radosavljević, Miroslav and Katavić, Boris",
year = "2012",
abstract = "Stress corrosion cracking (SCC) was tested in a high strength 7000 series aluminium alloy applied for
weapons and military equipment. The effect of one step- and two-step precipitation hardening (aging) on SCC was
investigated. The slow strain rate test (SSRT) and the fracture mechanics (FM) method were used for SCC testing. The
measurements of electrical resistivity allowed evaluating an aging degree in the tested alloy. Both testing methods have
shown that the alloy after two-step precipitation hardening is significantly more resistant to SCC. The critical stress
intensity factor for SCC, KISCC is significantly higher, and the crack growth rate on the plateau, vpl is more than one
order of magnitude lower for the alloy in this state. Processes that take place at the crack tip are proposed and the
effect of copper was analyzed. The effect of the testing solution (NaCl) temperature on the vpl was determined. Two
values of the apparent activation energy, Ea, were obtained; one value (46.6 kJ mol-1) refers to higher temperatures,
while the other (70.4 kJ mol-1) refers to lower test temperatures. These values of Ea correspond to the different
processes that control the vpl, at higher and lower temperatures.",
publisher = "Military Technical Institute",
journal = "5th International Scientific Conference on Defensive Technologies",
title = "STRESS CORROSION CRACKING OF AN AL-ZN-MG-CU ALLOY AFTER DIFFERENT PRECIPITATION HARDENING TREATMENTS",
pages = "587-582",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6093"
}

Alil, A., Jegdić, B. V., Bobić, B., Radosavljević, M.,& Katavić, B.. (2012). STRESS CORROSION CRACKING OF AN AL-ZN-MG-CU ALLOY AFTER DIFFERENT PRECIPITATION HARDENING TREATMENTS. in 5th International Scientific Conference on Defensive Technologies
Military Technical Institute., 582-587.
https://hdl.handle.net/21.15107/rcub_technorep_6093

Alil A, Jegdić BV, Bobić B, Radosavljević M, Katavić B. STRESS CORROSION CRACKING OF AN AL-ZN-MG-CU ALLOY AFTER DIFFERENT PRECIPITATION HARDENING TREATMENTS. in 5th International Scientific Conference on Defensive Technologies. 2012;:582-587.
https://hdl.handle.net/21.15107/rcub_technorep_6093 .

Alil, Ana, Jegdić, Bore V., Bobić, Biljana, Radosavljević, Miroslav, Katavić, Boris, "STRESS CORROSION CRACKING OF AN AL-ZN-MG-CU ALLOY AFTER DIFFERENT PRECIPITATION HARDENING TREATMENTS" in 5th International Scientific Conference on Defensive Technologies (2012):582-587,
https://hdl.handle.net/21.15107/rcub_technorep_6093 .

TY  - JOUR
AU  - Ristić, Marko
AU  - Gligorijević, Bojan R.
AU  - Alil, Ana
AU  - Katavić, Boris T.
AU  - Kutin, Marina
AU  - Jovanović, Dragan
AU  - Budimir, Stevan
PY  - 2012
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6233
PB  - UNIVERSITY OF TIMISOARA
T2  - SCIENTIFIC BULLETIN OF THE „POLITEHNICA”
T1  - Studies of the Properties of Different Hard Coatings Resistant to Wear
EP  - 59
IS  - 71
SP  - 53
VL  - 57
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6233
ER  - 

@article{
author = "Ristić, Marko and Gligorijević, Bojan R. and Alil, Ana and Katavić, Boris T. and Kutin, Marina and Jovanović, Dragan and Budimir, Stevan",
year = "2012",
publisher = "UNIVERSITY OF TIMISOARA",
journal = "SCIENTIFIC BULLETIN OF THE „POLITEHNICA”",
title = "Studies of the Properties of Different Hard Coatings Resistant to Wear",
pages = "59-53",
number = "71",
volume = "57",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6233"
}

Ristić, M., Gligorijević, B. R., Alil, A., Katavić, B. T., Kutin, M., Jovanović, D.,& Budimir, S.. (2012). Studies of the Properties of Different Hard Coatings Resistant to Wear. in SCIENTIFIC BULLETIN OF THE „POLITEHNICA”
UNIVERSITY OF TIMISOARA., 57(71), 53-59.
https://hdl.handle.net/21.15107/rcub_technorep_6233

Ristić M, Gligorijević BR, Alil A, Katavić BT, Kutin M, Jovanović D, Budimir S. Studies of the Properties of Different Hard Coatings Resistant to Wear. in SCIENTIFIC BULLETIN OF THE „POLITEHNICA”. 2012;57(71):53-59.
https://hdl.handle.net/21.15107/rcub_technorep_6233 .

Ristić, Marko, Gligorijević, Bojan R., Alil, Ana, Katavić, Boris T., Kutin, Marina, Jovanović, Dragan, Budimir, Stevan, "Studies of the Properties of Different Hard Coatings Resistant to Wear" in SCIENTIFIC BULLETIN OF THE „POLITEHNICA”, 57, no. 71 (2012):53-59,
https://hdl.handle.net/21.15107/rcub_technorep_6233 .

TY  - CONF
AU  - Gligorijević, Bojan R.
AU  - Katavić, Boris T.
AU  - Alil, Ana
AU  - Jegdić, Bore V.
AU  - Ristić, Marko
AU  - Prokolab, Milan
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6107
AB  - As-received floating-head heat exchanger bolts were broken (BB) and deposite-coated. The aim was to estimate
a cause of their failure. The new bolts of the same material were used as a reference material (reference bolt –
RB). After visual and radiographic examination, their chemical composition, structure and room-temperature
mechanical properties were determined and compared. Comparison was made with the values set by standard,
as well. Afterwards, fractography was performed on fractured surfaces of tensile specimens and originally
(during exploitation) BBs to try to get an impression about bolts failure mechanism. Qualitative analysis of
deposite was employed in order to confirm was there any possible influence of surroundings during their failure
in terms of corrosion-assisted cracking. Chemical composition of RB and BB materials was analyzed by use of
spectrophotometry and structure properties with light optical microscope (LOM). Fractured surfaces of tensile
specimens and of BBs, as well as deposite chemistry, were analyzed by use of Scanning Electron Microscopy
with Energy Dispersive System (SEM-EDS). BBs had an approximately three times higher sulphur content and
lesser manganese content, lower ductility and higher strength values comparing to those of the RBs. Generally,
fracture surfaces of both, RB and BB tensile specimens have a similar rosette-like macro-appearance. The only
difference is that the radial marks in the case of the RBs are rougher. The surface has a more fibrous area and
shear lip presence. Fracture mode can be characterized as dimple rupture and micromechanism as microvoid
coalescence. In the case of BB tensile specimens, the mixed presence of dimples and cleavage facets was
noticed. The macrofractography of originally broken surfaces shows a rough and complex topography of
fracture surfaces indicating on a possibility that bolts failure has been a result of complex loading conditions.
Presence of sulphur- and chlorine-containing particles on the fracture surfaces of BBs and in deposite reveals a
possibility that failure was environmentally-assisted.
PB  - Timisoara, Romania
C3  - Proceedings of the 9th International Conference “Structural integrity of welded structures”
T1  - Analysis of floating-head heat exchanger bolts failure
EP  - 9
SP  - 1
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6107
ER  - 

@conference{
author = "Gligorijević, Bojan R. and Katavić, Boris T. and Alil, Ana and Jegdić, Bore V. and Ristić, Marko and Prokolab, Milan",
year = "2011",
abstract = "As-received floating-head heat exchanger bolts were broken (BB) and deposite-coated. The aim was to estimate
a cause of their failure. The new bolts of the same material were used as a reference material (reference bolt –
RB). After visual and radiographic examination, their chemical composition, structure and room-temperature
mechanical properties were determined and compared. Comparison was made with the values set by standard,
as well. Afterwards, fractography was performed on fractured surfaces of tensile specimens and originally
(during exploitation) BBs to try to get an impression about bolts failure mechanism. Qualitative analysis of
deposite was employed in order to confirm was there any possible influence of surroundings during their failure
in terms of corrosion-assisted cracking. Chemical composition of RB and BB materials was analyzed by use of
spectrophotometry and structure properties with light optical microscope (LOM). Fractured surfaces of tensile
specimens and of BBs, as well as deposite chemistry, were analyzed by use of Scanning Electron Microscopy
with Energy Dispersive System (SEM-EDS). BBs had an approximately three times higher sulphur content and
lesser manganese content, lower ductility and higher strength values comparing to those of the RBs. Generally,
fracture surfaces of both, RB and BB tensile specimens have a similar rosette-like macro-appearance. The only
difference is that the radial marks in the case of the RBs are rougher. The surface has a more fibrous area and
shear lip presence. Fracture mode can be characterized as dimple rupture and micromechanism as microvoid
coalescence. In the case of BB tensile specimens, the mixed presence of dimples and cleavage facets was
noticed. The macrofractography of originally broken surfaces shows a rough and complex topography of
fracture surfaces indicating on a possibility that bolts failure has been a result of complex loading conditions.
Presence of sulphur- and chlorine-containing particles on the fracture surfaces of BBs and in deposite reveals a
possibility that failure was environmentally-assisted.",
publisher = "Timisoara, Romania",
journal = "Proceedings of the 9th International Conference “Structural integrity of welded structures”",
title = "Analysis of floating-head heat exchanger bolts failure",
pages = "9-1",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6107"
}

Gligorijević, B. R., Katavić, B. T., Alil, A., Jegdić, B. V., Ristić, M.,& Prokolab, M.. (2011). Analysis of floating-head heat exchanger bolts failure. in Proceedings of the 9th International Conference “Structural integrity of welded structures”
Timisoara, Romania., 1-9.
https://hdl.handle.net/21.15107/rcub_technorep_6107

Gligorijević BR, Katavić BT, Alil A, Jegdić BV, Ristić M, Prokolab M. Analysis of floating-head heat exchanger bolts failure. in Proceedings of the 9th International Conference “Structural integrity of welded structures”. 2011;:1-9.
https://hdl.handle.net/21.15107/rcub_technorep_6107 .

Gligorijević, Bojan R., Katavić, Boris T., Alil, Ana, Jegdić, Bore V., Ristić, Marko, Prokolab, Milan, "Analysis of floating-head heat exchanger bolts failure" in Proceedings of the 9th International Conference “Structural integrity of welded structures” (2011):1-9,
https://hdl.handle.net/21.15107/rcub_technorep_6107 .

TY  - CONF
AU  - Alil, Ana
AU  - Jegdić, Bore V.
AU  - Milutinović, Zlatan R.
AU  - Katavić, Boris T.
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6097
AB  - Sensitization degree of the austenitic stainless steel welded joints was investigated by
electrochemical methods: the double loop electrochemical potentiokinetic reactivation (DL EPR) in H2SO4 +
KSCN solution and by of the corrosion potentials measurement of the steel in the solution drop of HNO3 +
FeCl3 6H2O + HCl. The welded joints, by an X-ray radiographic method on possible presence of the weld
defects, were tested. Grain size of the base metal and the welded joints, by applying an optical microscopy
were determined. The existence of compatibility between the results for different electrochemical methods is
shown. Heat affected zone (HAZ) of the austenitic stainless steel welded joints has shown significant degree
of sensitization. The corrosion potentials measurement method is simple, nondestructive method, that gives
qualitative informations about degree of the sensitizations of the stainless steel. The double loop
electrochemical potentiokinetic method gives quantitative evidence about susceptibility of the stainless steel
to intergranular corrosion. This method can be applied with some adaptation in field environments.
PB  - SUDURA publising house, Rumunija
C3  - The 9th international Conference “Structural integrity of welded structures” Timisoara Romania, 3-4 November 2011
T1  - Investigation of intergranular corrosion welded joint of austenitic stainless steel by electrochemical methods
EP  - 7
SP  - 1
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6097
ER  - 

@conference{
author = "Alil, Ana and Jegdić, Bore V. and Milutinović, Zlatan R. and Katavić, Boris T.",
year = "2011",
abstract = "Sensitization degree of the austenitic stainless steel welded joints was investigated by
electrochemical methods: the double loop electrochemical potentiokinetic reactivation (DL EPR) in H2SO4 +
KSCN solution and by of the corrosion potentials measurement of the steel in the solution drop of HNO3 +
FeCl3 6H2O + HCl. The welded joints, by an X-ray radiographic method on possible presence of the weld
defects, were tested. Grain size of the base metal and the welded joints, by applying an optical microscopy
were determined. The existence of compatibility between the results for different electrochemical methods is
shown. Heat affected zone (HAZ) of the austenitic stainless steel welded joints has shown significant degree
of sensitization. The corrosion potentials measurement method is simple, nondestructive method, that gives
qualitative informations about degree of the sensitizations of the stainless steel. The double loop
electrochemical potentiokinetic method gives quantitative evidence about susceptibility of the stainless steel
to intergranular corrosion. This method can be applied with some adaptation in field environments.",
publisher = "SUDURA publising house, Rumunija",
journal = "The 9th international Conference “Structural integrity of welded structures” Timisoara Romania, 3-4 November 2011",
title = "Investigation of intergranular corrosion welded joint of austenitic stainless steel by electrochemical methods",
pages = "7-1",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6097"
}

Alil, A., Jegdić, B. V., Milutinović, Z. R.,& Katavić, B. T.. (2011). Investigation of intergranular corrosion welded joint of austenitic stainless steel by electrochemical methods. in The 9th international Conference “Structural integrity of welded structures” Timisoara Romania, 3-4 November 2011
SUDURA publising house, Rumunija., 1-7.
https://hdl.handle.net/21.15107/rcub_technorep_6097

Alil A, Jegdić BV, Milutinović ZR, Katavić BT. Investigation of intergranular corrosion welded joint of austenitic stainless steel by electrochemical methods. in The 9th international Conference “Structural integrity of welded structures” Timisoara Romania, 3-4 November 2011. 2011;:1-7.
https://hdl.handle.net/21.15107/rcub_technorep_6097 .

Alil, Ana, Jegdić, Bore V., Milutinović, Zlatan R., Katavić, Boris T., "Investigation of intergranular corrosion welded joint of austenitic stainless steel by electrochemical methods" in The 9th international Conference “Structural integrity of welded structures” Timisoara Romania, 3-4 November 2011 (2011):1-7,
https://hdl.handle.net/21.15107/rcub_technorep_6097 .

TY  - CONF
AU  - Katavić, Boris T.
AU  - Gligorijević, Bojan R.
AU  - Alil, Ana
AU  - Odanović, Zoran
AU  - Đurđević, Mile
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6095
AB  - This work deals with effects of hot plastic deformation process and subsequent heat treatment on structure and mechanical properties of centrifugally cast (CC) high strength CrMoNb steel tubes. Plate samples, taken from CC tubes, were homogenized and subsequently hot rolled. One serie of samples was soft-annealed (SA) and other series oil-quenched and tempered (QT) between 373-923 K. Primary and secondary structures, non-metallic inclusions in radial direction and prior austenite grain size were analyzed using bright-field and polarized light microsopy. Experimental mechanical properties of SA and QT samples were modeled by means of polynomial functions and correlated with structure properties.
PB  - TECHNICAL FACULTY IN BORUNIVERSITY OF BELGRADE and MINING AND METALLURGY INSTITUTE BOR, Srbija
C3  - Proceedings of the 43rd International October Conference on Mining and Metallurgy 2011
T1  - PLASTIC DEFORMATION AND HEAT TREATMENT OF THIN WALLED CENTRIFUGALLY CAST HIGH STRENGTH CrMoNb STEEL TUBES
EP  - 337
SP  - 333
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6095
ER  - 

@conference{
author = "Katavić, Boris T. and Gligorijević, Bojan R. and Alil, Ana and Odanović, Zoran and Đurđević, Mile",
year = "2011",
abstract = "This work deals with effects of hot plastic deformation process and subsequent heat treatment on structure and mechanical properties of centrifugally cast (CC) high strength CrMoNb steel tubes. Plate samples, taken from CC tubes, were homogenized and subsequently hot rolled. One serie of samples was soft-annealed (SA) and other series oil-quenched and tempered (QT) between 373-923 K. Primary and secondary structures, non-metallic inclusions in radial direction and prior austenite grain size were analyzed using bright-field and polarized light microsopy. Experimental mechanical properties of SA and QT samples were modeled by means of polynomial functions and correlated with structure properties.",
publisher = "TECHNICAL FACULTY IN BORUNIVERSITY OF BELGRADE and MINING AND METALLURGY INSTITUTE BOR, Srbija",
journal = "Proceedings of the 43rd International October Conference on Mining and Metallurgy 2011",
title = "PLASTIC DEFORMATION AND HEAT TREATMENT OF THIN WALLED CENTRIFUGALLY CAST HIGH STRENGTH CrMoNb STEEL TUBES",
pages = "337-333",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6095"
}

Katavić, B. T., Gligorijević, B. R., Alil, A., Odanović, Z.,& Đurđević, M.. (2011). PLASTIC DEFORMATION AND HEAT TREATMENT OF THIN WALLED CENTRIFUGALLY CAST HIGH STRENGTH CrMoNb STEEL TUBES. in Proceedings of the 43rd International October Conference on Mining and Metallurgy 2011
TECHNICAL FACULTY IN BORUNIVERSITY OF BELGRADE and MINING AND METALLURGY INSTITUTE BOR, Srbija., 333-337.
https://hdl.handle.net/21.15107/rcub_technorep_6095

Katavić BT, Gligorijević BR, Alil A, Odanović Z, Đurđević M. PLASTIC DEFORMATION AND HEAT TREATMENT OF THIN WALLED CENTRIFUGALLY CAST HIGH STRENGTH CrMoNb STEEL TUBES. in Proceedings of the 43rd International October Conference on Mining and Metallurgy 2011. 2011;:333-337.
https://hdl.handle.net/21.15107/rcub_technorep_6095 .

Katavić, Boris T., Gligorijević, Bojan R., Alil, Ana, Odanović, Zoran, Đurđević, Mile, "PLASTIC DEFORMATION AND HEAT TREATMENT OF THIN WALLED CENTRIFUGALLY CAST HIGH STRENGTH CrMoNb STEEL TUBES" in Proceedings of the 43rd International October Conference on Mining and Metallurgy 2011 (2011):333-337,
https://hdl.handle.net/21.15107/rcub_technorep_6095 .

TY  - CONF
AU  - Alil, Ana
AU  - Katavić, Boris
AU  - Ristić, Marko
AU  - Jovanović, Dragan
AU  - Prokolab, Milan
AU  - Stevan, Budimir
AU  - Kočić, Milorad
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6094
AB  - Ventilation mill for grinding coal is one of the main steam
power plants in the system that makes a significant influence
on the level of energy efficiency with its work. Working
parts of the device during exploitation are dominantly
exposed to intensive abrasive and erosive wear and also to
impact loading at elevated temperatures, which can lead to
damage and fracture of homogeneous materials, thus
shortening their working life. The consequences are the
reduction in mill production capacity and its ventilatory
effects compared to the projected value, as well as frequent
delays due to parts replacements, that significantly affects
the productivity, economy and energy-efficiency of the
system.
In order to determine the optimal technology for
revitalization of the damaged impact plates the experimental
model-hardfacing was engaged and different technologies
and additional materials were used. Three technologies archardfacing
were applied (MMA, SMAW and gas welding -
G) and eight additional materials with different chemical
composition and properties (Fe-Cr-C-Si, Fe-Cr-C-Si-Ti, Fe-
C-W-Co-Ni-Si, Fe-Cr-W-B-Nb-Mo-C, W-Fe-C and WC-Ni-
Cr-Si-B). The aim of this paper is to make the selection of
optimum welding procedures and additional materials and
hardfacing technology definition based on the results of
structural and mechanical properties of samples of
experimental model hardfacing. Cutting the samples for
mechanical and structural tests is performed with water jet
cutting using hardfaced test plan. Investigation of its
macrostructure has been done, diagrams of distributions of
hardness have been made, zone of the surface layer and
HAZ-a, and the degree of mixing for all hardfaced samples
have been defined. In addition, microstructural analyses
were obtained with optical (OM) and scanning electron
microscopy (SEM). The choice of additional materials and
hardfacing procedures which were applied in the hard facing
impact plates ventilation mill has been made based on the
results of this research paper.
PB  - SUDURA publising house, Rumunija
C3  - The 5th International Conference – Innovative technologies for joining advanced materials
T1  - Structural and mechanical properties of different hard welded coatings for impact plate for ventilation mill
EP  - 6
SP  - 1
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6094
ER  - 

@conference{
author = "Alil, Ana and Katavić, Boris and Ristić, Marko and Jovanović, Dragan and Prokolab, Milan and Stevan, Budimir and Kočić, Milorad",
year = "2011",
abstract = "Ventilation mill for grinding coal is one of the main steam
power plants in the system that makes a significant influence
on the level of energy efficiency with its work. Working
parts of the device during exploitation are dominantly
exposed to intensive abrasive and erosive wear and also to
impact loading at elevated temperatures, which can lead to
damage and fracture of homogeneous materials, thus
shortening their working life. The consequences are the
reduction in mill production capacity and its ventilatory
effects compared to the projected value, as well as frequent
delays due to parts replacements, that significantly affects
the productivity, economy and energy-efficiency of the
system.
In order to determine the optimal technology for
revitalization of the damaged impact plates the experimental
model-hardfacing was engaged and different technologies
and additional materials were used. Three technologies archardfacing
were applied (MMA, SMAW and gas welding -
G) and eight additional materials with different chemical
composition and properties (Fe-Cr-C-Si, Fe-Cr-C-Si-Ti, Fe-
C-W-Co-Ni-Si, Fe-Cr-W-B-Nb-Mo-C, W-Fe-C and WC-Ni-
Cr-Si-B). The aim of this paper is to make the selection of
optimum welding procedures and additional materials and
hardfacing technology definition based on the results of
structural and mechanical properties of samples of
experimental model hardfacing. Cutting the samples for
mechanical and structural tests is performed with water jet
cutting using hardfaced test plan. Investigation of its
macrostructure has been done, diagrams of distributions of
hardness have been made, zone of the surface layer and
HAZ-a, and the degree of mixing for all hardfaced samples
have been defined. In addition, microstructural analyses
were obtained with optical (OM) and scanning electron
microscopy (SEM). The choice of additional materials and
hardfacing procedures which were applied in the hard facing
impact plates ventilation mill has been made based on the
results of this research paper.",
publisher = "SUDURA publising house, Rumunija",
journal = "The 5th International Conference – Innovative technologies for joining advanced materials",
title = "Structural and mechanical properties of different hard welded coatings for impact plate for ventilation mill",
pages = "6-1",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6094"
}

Alil, A., Katavić, B., Ristić, M., Jovanović, D., Prokolab, M., Stevan, B.,& Kočić, M.. (2011). Structural and mechanical properties of different hard welded coatings for impact plate for ventilation mill. in The 5th International Conference – Innovative technologies for joining advanced materials
SUDURA publising house, Rumunija., 1-6.
https://hdl.handle.net/21.15107/rcub_technorep_6094

Alil A, Katavić B, Ristić M, Jovanović D, Prokolab M, Stevan B, Kočić M. Structural and mechanical properties of different hard welded coatings for impact plate for ventilation mill. in The 5th International Conference – Innovative technologies for joining advanced materials. 2011;:1-6.
https://hdl.handle.net/21.15107/rcub_technorep_6094 .

Alil, Ana, Katavić, Boris, Ristić, Marko, Jovanović, Dragan, Prokolab, Milan, Stevan, Budimir, Kočić, Milorad, "Structural and mechanical properties of different hard welded coatings for impact plate for ventilation mill" in The 5th International Conference – Innovative technologies for joining advanced materials (2011):1-6,
https://hdl.handle.net/21.15107/rcub_technorep_6094 .

TY  - JOUR
AU  - Jegdić, Bore
AU  - Alil, Ana
AU  - Milutinović, Zlatan R.
AU  - Odanović, Zoran
AU  - Gligorijević, Bojan
AU  - Katavić, Boris T.
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1937
AB  - The sensitization degree of austenitic stainless steel welded joints was investigated by electrochemical methods of the double loop electrochemical potentiokinetic reactivation (DL EPR) in H(2)SO(4) + KSCN solution, and by the measurement of corrosion potential of the steel in the drop of the solution of HNO(3) + FeCl(3) + HCl. The welded joints were tested by X-ray radiographic method in order to check the presence of the weld defects. The grain sizes of the base metal and the welded joints were determined by optical microscopy. Good agreement between the results obtained by different electrochemical methods was obtained. The heat-affected zone (HAZ) of the austenitic stainless steel welded joints has shown a significant degree of sensitization. The double loop electrochemical potentiokinetic method gave quantitative evidence about the susceptibility of stainless steel to intergranular corrosion.
PB  - Savez hemijskih inženjera, Beograd
T2  - Hemijska industrija
T1  - Application of electrochemical methods for the investigation of intergranular corrosion of welded joint of austenitic stainless steel 19cr-9ni
EP  - 186
IS  - 2
SP  - 179
VL  - 65
DO  - 10.2298/HEMIND101122005J
ER  - 

@article{
author = "Jegdić, Bore and Alil, Ana and Milutinović, Zlatan R. and Odanović, Zoran and Gligorijević, Bojan and Katavić, Boris T.",
year = "2011",
abstract = "The sensitization degree of austenitic stainless steel welded joints was investigated by electrochemical methods of the double loop electrochemical potentiokinetic reactivation (DL EPR) in H(2)SO(4) + KSCN solution, and by the measurement of corrosion potential of the steel in the drop of the solution of HNO(3) + FeCl(3) + HCl. The welded joints were tested by X-ray radiographic method in order to check the presence of the weld defects. The grain sizes of the base metal and the welded joints were determined by optical microscopy. Good agreement between the results obtained by different electrochemical methods was obtained. The heat-affected zone (HAZ) of the austenitic stainless steel welded joints has shown a significant degree of sensitization. The double loop electrochemical potentiokinetic method gave quantitative evidence about the susceptibility of stainless steel to intergranular corrosion.",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Hemijska industrija",
title = "Application of electrochemical methods for the investigation of intergranular corrosion of welded joint of austenitic stainless steel 19cr-9ni",
pages = "186-179",
number = "2",
volume = "65",
doi = "10.2298/HEMIND101122005J"
}

Jegdić, B., Alil, A., Milutinović, Z. R., Odanović, Z., Gligorijević, B.,& Katavić, B. T.. (2011). Application of electrochemical methods for the investigation of intergranular corrosion of welded joint of austenitic stainless steel 19cr-9ni. in Hemijska industrija
Savez hemijskih inženjera, Beograd., 65(2), 179-186.
https://doi.org/10.2298/HEMIND101122005J

Jegdić B, Alil A, Milutinović ZR, Odanović Z, Gligorijević B, Katavić BT. Application of electrochemical methods for the investigation of intergranular corrosion of welded joint of austenitic stainless steel 19cr-9ni. in Hemijska industrija. 2011;65(2):179-186.
doi:10.2298/HEMIND101122005J .

Jegdić, Bore, Alil, Ana, Milutinović, Zlatan R., Odanović, Zoran, Gligorijević, Bojan, Katavić, Boris T., "Application of electrochemical methods for the investigation of intergranular corrosion of welded joint of austenitic stainless steel 19cr-9ni" in Hemijska industrija, 65, no. 2 (2011):179-186,
https://doi.org/10.2298/HEMIND101122005J . .

TY  - JOUR
AU  - Alil, Ana
AU  - Katavić, Boris T.
AU  - Ristić, Marko
AU  - Jovanović, Dragan
AU  - Prokolab, Milan
AU  - Budimir, Stevan
AU  - Kočić, Milorad
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6229
PB  - SUDURA Publishing House
T2  - Welding and Material Testing
T1  - Structural and mechanical properties of different hard welded coatings for impact plate for ventilation mill
EP  - 11
IS  - 3
SP  - 7
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6229
ER  - 

@article{
author = "Alil, Ana and Katavić, Boris T. and Ristić, Marko and Jovanović, Dragan and Prokolab, Milan and Budimir, Stevan and Kočić, Milorad",
year = "2011",
publisher = "SUDURA Publishing House",
journal = "Welding and Material Testing",
title = "Structural and mechanical properties of different hard welded coatings for impact plate for ventilation mill",
pages = "11-7",
number = "3",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6229"
}

Alil, A., Katavić, B. T., Ristić, M., Jovanović, D., Prokolab, M., Budimir, S.,& Kočić, M.. (2011). Structural and mechanical properties of different hard welded coatings for impact plate for ventilation mill. in Welding and Material Testing
SUDURA Publishing House.(3), 7-11.
https://hdl.handle.net/21.15107/rcub_technorep_6229

Alil A, Katavić BT, Ristić M, Jovanović D, Prokolab M, Budimir S, Kočić M. Structural and mechanical properties of different hard welded coatings for impact plate for ventilation mill. in Welding and Material Testing. 2011;(3):7-11.
https://hdl.handle.net/21.15107/rcub_technorep_6229 .

Alil, Ana, Katavić, Boris T., Ristić, Marko, Jovanović, Dragan, Prokolab, Milan, Budimir, Stevan, Kočić, Milorad, "Structural and mechanical properties of different hard welded coatings for impact plate for ventilation mill" in Welding and Material Testing, no. 3 (2011):7-11,
https://hdl.handle.net/21.15107/rcub_technorep_6229 .