TY  - CONF
AU  - Alil, Ana
AU  - Jegdić, Bore V.
AU  - Milutinović, Zlatan R.
AU  - Katavić, Boris T.
PY  - 2011
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7501
AB  - Sensitization degree of the austenitic stainless steel welded joints was investigated byelectrochemical 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 welddefects, were tested. Grain size of the base metal and the welded joints, by applying an optical microscopywere determined. The existence of compatibility between the results for different electrochemical methods isshown. Heat affected zone (HAZ) of the austenitic stainless steel welded joints has shown significant degreeof sensitization. The corrosion potentials measurement method is simple, nondestructive method, that givesqualitative informations about degree of the sensitizations of the stainless steel. The double loopelectrochemical potentiokinetic method gives quantitative evidence about susceptibility of the stainless steelto intergranular corrosion. This method can be applied with some adaptation in field environments.
PB  - Timisoara, Romania : SUDURA publising house
C3  - Proceedings of the 9th International Conference “Structural integrity of welded structures”, 03-04.11.2011, Timisoara, Romania
T1  - Investigation of intergranular corrosion welded joint of austenitic stainless steel by electrochemical methods
SP  - 1
EP  - 7
UR  - https://hdl.handle.net/21.15107/rcub_cer_7501
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 byelectrochemical 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 welddefects, were tested. Grain size of the base metal and the welded joints, by applying an optical microscopywere determined. The existence of compatibility between the results for different electrochemical methods isshown. Heat affected zone (HAZ) of the austenitic stainless steel welded joints has shown significant degreeof sensitization. The corrosion potentials measurement method is simple, nondestructive method, that givesqualitative informations about degree of the sensitizations of the stainless steel. The double loopelectrochemical potentiokinetic method gives quantitative evidence about susceptibility of the stainless steelto intergranular corrosion. This method can be applied with some adaptation in field environments.",
publisher = "Timisoara, Romania : SUDURA publising house",
journal = "Proceedings of the 9th International Conference “Structural integrity of welded structures”, 03-04.11.2011, Timisoara, Romania",
title = "Investigation of intergranular corrosion welded joint of austenitic stainless steel by electrochemical methods",
pages = "1-7",
url = "https://hdl.handle.net/21.15107/rcub_cer_7501"
}

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 Proceedings of the 9th International Conference “Structural integrity of welded structures”, 03-04.11.2011, Timisoara, Romania
Timisoara, Romania : SUDURA publising house., 1-7.
https://hdl.handle.net/21.15107/rcub_cer_7501

Alil A, Jegdić BV, Milutinović ZR, Katavić BT. Investigation of intergranular corrosion welded joint of austenitic stainless steel by electrochemical methods. in Proceedings of the 9th International Conference “Structural integrity of welded structures”, 03-04.11.2011, Timisoara, Romania. 2011;:1-7.
https://hdl.handle.net/21.15107/rcub_cer_7501 .

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 Proceedings of the 9th International Conference “Structural integrity of welded structures”, 03-04.11.2011, Timisoara, Romania (2011):1-7,
https://hdl.handle.net/21.15107/rcub_cer_7501 .

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  - https://cer.ihtm.bg.ac.rs/handle/123456789/7500
AB  - As-received floating-head heat exchanger bolts were broken (BB) and deposite-coated. The aim was to estimatea 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-temperaturemechanical 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 ofdeposite was employed in order to confirm was there any possible influence of surroundings during their failurein terms of corrosion-assisted cracking. Chemical composition of RB and BB materials was analyzed by use ofspectrophotometry and structure properties with light optical microscope (LOM). Fractured surfaces of tensilespecimens and of BBs, as well as deposite chemistry, were analyzed by use of Scanning Electron Microscopywith Energy Dispersive System (SEM-EDS). BBs had an approximately three times higher sulphur content andlesser 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 onlydifference is that the radial marks in the case of the RBs are rougher. The surface has a more fibrous area andshear lip presence. Fracture mode can be characterized as dimple rupture and micromechanism as microvoidcoalescence. In the case of BB tensile specimens, the mixed presence of dimples and cleavage facets wasnoticed. The macrofractography of originally broken surfaces shows a rough and complex topography offracture 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 apossibility that failure was environmentally-assisted.
PB  - Timisoara, Romania : SUDURA publising house
C3  - Proceedings of the 9th International Conference “Structural integrity of welded structures”, 03-04.11.2011, Timisoara, Romania
T1  - Analysis of floating-head heat exchanger bolts failure
SP  - 1
EP  - 9
UR  - https://hdl.handle.net/21.15107/rcub_cer_7500
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 estimatea 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-temperaturemechanical 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 ofdeposite was employed in order to confirm was there any possible influence of surroundings during their failurein terms of corrosion-assisted cracking. Chemical composition of RB and BB materials was analyzed by use ofspectrophotometry and structure properties with light optical microscope (LOM). Fractured surfaces of tensilespecimens and of BBs, as well as deposite chemistry, were analyzed by use of Scanning Electron Microscopywith Energy Dispersive System (SEM-EDS). BBs had an approximately three times higher sulphur content andlesser 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 onlydifference is that the radial marks in the case of the RBs are rougher. The surface has a more fibrous area andshear lip presence. Fracture mode can be characterized as dimple rupture and micromechanism as microvoidcoalescence. In the case of BB tensile specimens, the mixed presence of dimples and cleavage facets wasnoticed. The macrofractography of originally broken surfaces shows a rough and complex topography offracture 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 apossibility that failure was environmentally-assisted.",
publisher = "Timisoara, Romania : SUDURA publising house",
journal = "Proceedings of the 9th International Conference “Structural integrity of welded structures”, 03-04.11.2011, Timisoara, Romania",
title = "Analysis of floating-head heat exchanger bolts failure",
pages = "1-9",
url = "https://hdl.handle.net/21.15107/rcub_cer_7500"
}

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”, 03-04.11.2011, Timisoara, Romania
Timisoara, Romania : SUDURA publising house., 1-9.
https://hdl.handle.net/21.15107/rcub_cer_7500

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”, 03-04.11.2011, Timisoara, Romania. 2011;:1-9.
https://hdl.handle.net/21.15107/rcub_cer_7500 .

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”, 03-04.11.2011, Timisoara, Romania (2011):1-9,
https://hdl.handle.net/21.15107/rcub_cer_7500 .