TY  - JOUR
AU  - Buyukyildirim, G.
AU  - Sedmak, Aleksandar
AU  - Prokić-Cvetković, Radica
AU  - Popović, Olivera
AU  - Jovicić, R.
AU  - Bulatović, Srđan
PY  - 2011
UR  - http://rims.institutims.rs/handle/123456789/144
AB  - The effect of MIG/MAG shielding gas on the toughness of aluminium alloy AlMg4.5Mn weld metal has been analysed using the instrumented Charpy pendulum for standard toughness testing. The MIG/MAG welding was performed in the shielded atmosphere of Ar, as well as the mixtures of gases Ar + 0.0307 % O 2, Ar + 30 % He + 0.0317 %O 2 and Ar + 48 % He + 0.0290 % O 2. Metallographic tests have been performed in order to check the appearance and porosity of the weld metal, as well as its toughness testing at different temperatures (20, - 90, - 196 °C), using the instrumental Charpy pendulum, in order to separate the crack initiation and crack growth energy. In this way, a comprehensive insight of the effect of shielding gas on the weld metal toughness has been obtained.
PB  - Univerzitet u Beogradu - Mašinski fakultet, Beograd
T2  - FME Transactions
T1  - The effect of shielding gas on the toughness of ALMg4.5Mn weld metals made by GMAW
EP  - 132
IS  - 3
SP  - 127
VL  - 39
UR  - https://hdl.handle.net/21.15107/rcub_rims_144
ER  - 

@article{
author = "Buyukyildirim, G. and Sedmak, Aleksandar and Prokić-Cvetković, Radica and Popović, Olivera and Jovicić, R. and Bulatović, Srđan",
year = "2011",
abstract = "The effect of MIG/MAG shielding gas on the toughness of aluminium alloy AlMg4.5Mn weld metal has been analysed using the instrumented Charpy pendulum for standard toughness testing. The MIG/MAG welding was performed in the shielded atmosphere of Ar, as well as the mixtures of gases Ar + 0.0307 % O 2, Ar + 30 % He + 0.0317 %O 2 and Ar + 48 % He + 0.0290 % O 2. Metallographic tests have been performed in order to check the appearance and porosity of the weld metal, as well as its toughness testing at different temperatures (20, - 90, - 196 °C), using the instrumental Charpy pendulum, in order to separate the crack initiation and crack growth energy. In this way, a comprehensive insight of the effect of shielding gas on the weld metal toughness has been obtained.",
publisher = "Univerzitet u Beogradu - Mašinski fakultet, Beograd",
journal = "FME Transactions",
title = "The effect of shielding gas on the toughness of ALMg4.5Mn weld metals made by GMAW",
pages = "132-127",
number = "3",
volume = "39",
url = "https://hdl.handle.net/21.15107/rcub_rims_144"
}

Buyukyildirim, G., Sedmak, A., Prokić-Cvetković, R., Popović, O., Jovicić, R.,& Bulatović, S.. (2011). The effect of shielding gas on the toughness of ALMg4.5Mn weld metals made by GMAW. in FME Transactions
Univerzitet u Beogradu - Mašinski fakultet, Beograd., 39(3), 127-132.
https://hdl.handle.net/21.15107/rcub_rims_144

Buyukyildirim G, Sedmak A, Prokić-Cvetković R, Popović O, Jovicić R, Bulatović S. The effect of shielding gas on the toughness of ALMg4.5Mn weld metals made by GMAW. in FME Transactions. 2011;39(3):127-132.
https://hdl.handle.net/21.15107/rcub_rims_144 .

Buyukyildirim, G., Sedmak, Aleksandar, Prokić-Cvetković, Radica, Popović, Olivera, Jovicić, R., Bulatović, Srđan, "The effect of shielding gas on the toughness of ALMg4.5Mn weld metals made by GMAW" in FME Transactions, 39, no. 3 (2011):127-132,
https://hdl.handle.net/21.15107/rcub_rims_144 .

TY  - JOUR
AU  - Jovičić, R.
AU  - Sedmak, Aleksandar
AU  - Prokić-Cvetković, Radica
AU  - Bulatović, Srđan
AU  - Buyukyildirim, G.
PY  - 2011
UR  - http://rims.institutims.rs/handle/123456789/133
AB  - In this paper the AlMg4.5Mn TIG welded joints have been tested in order to investigate their cracking resistance. Testing plates, size of 500×250×12 mm, are welded by TIG procedure in a horizontal-vertical position. Various mixtures of inert gases are prepared and supplied by MESSER TEHNOGAS AD, Smederevo (Serbia), including Ar, Ar + 0.015% N 2 , Ar + 15% He + 0.015% N 2 , Ar + 30% He + 0.015% N 2 , Ar + 50% He + 0.015% N 2 . Nondestructive testing is used to check joint defects, primarily porosity, as typical for this type of alloys. The Charpy specimens, with the notch positioned in different regions of the welded joint, are tested using instrumented pendulum to separate crack initiation and growth energy. Crack resistance is evaluated by using static (KIc) and dynamic testing (Paris law - fatigue crack growth).
PB  - Institut za ispitivanje materijala, Beograd
T2  - Structural Integrity and Life
T1  - Cracking resistance of AlMg4.5Mn alloy TIG welded joints
EP  - 208
IS  - 3
SP  - 205
VL  - 11
UR  - https://hdl.handle.net/21.15107/rcub_rims_133
ER  - 

@article{
author = "Jovičić, R. and Sedmak, Aleksandar and Prokić-Cvetković, Radica and Bulatović, Srđan and Buyukyildirim, G.",
year = "2011",
abstract = "In this paper the AlMg4.5Mn TIG welded joints have been tested in order to investigate their cracking resistance. Testing plates, size of 500×250×12 mm, are welded by TIG procedure in a horizontal-vertical position. Various mixtures of inert gases are prepared and supplied by MESSER TEHNOGAS AD, Smederevo (Serbia), including Ar, Ar + 0.015% N 2 , Ar + 15% He + 0.015% N 2 , Ar + 30% He + 0.015% N 2 , Ar + 50% He + 0.015% N 2 . Nondestructive testing is used to check joint defects, primarily porosity, as typical for this type of alloys. The Charpy specimens, with the notch positioned in different regions of the welded joint, are tested using instrumented pendulum to separate crack initiation and growth energy. Crack resistance is evaluated by using static (KIc) and dynamic testing (Paris law - fatigue crack growth).",
publisher = "Institut za ispitivanje materijala, Beograd",
journal = "Structural Integrity and Life",
title = "Cracking resistance of AlMg4.5Mn alloy TIG welded joints",
pages = "208-205",
number = "3",
volume = "11",
url = "https://hdl.handle.net/21.15107/rcub_rims_133"
}

Jovičić, R., Sedmak, A., Prokić-Cvetković, R., Bulatović, S.,& Buyukyildirim, G.. (2011). Cracking resistance of AlMg4.5Mn alloy TIG welded joints. in Structural Integrity and Life
Institut za ispitivanje materijala, Beograd., 11(3), 205-208.
https://hdl.handle.net/21.15107/rcub_rims_133

Jovičić R, Sedmak A, Prokić-Cvetković R, Bulatović S, Buyukyildirim G. Cracking resistance of AlMg4.5Mn alloy TIG welded joints. in Structural Integrity and Life. 2011;11(3):205-208.
https://hdl.handle.net/21.15107/rcub_rims_133 .

Jovičić, R., Sedmak, Aleksandar, Prokić-Cvetković, Radica, Bulatović, Srđan, Buyukyildirim, G., "Cracking resistance of AlMg4.5Mn alloy TIG welded joints" in Structural Integrity and Life, 11, no. 3 (2011):205-208,
https://hdl.handle.net/21.15107/rcub_rims_133 .

TY  - JOUR
AU  - Popović, Olivera
AU  - Prokić-Cvetković, Radica
AU  - Sedmak, Aleksandar
AU  - Grabulov, Vencislav
AU  - Burzić, Zijah
AU  - Rakin, Marko
PY  - 2010
UR  - http://rims.institutims.rs/handle/123456789/123
AB  - In this paper microstructural and mechanical properties of high-carbon steel surface welded layer, obtained with self-shielded flux cored wire, are presented in the case of a standard rails and crossings. The testing results of tensile characteristics, hardness, toughness via instrumented Charpy pendulum, microstructural analysis and fatigue crack growth resistance of all characteristical zones are analysed in details, especially from the point of view of interaction between microstructure and properties. Obtained results indicate superior properties of repaired welded layers, due to their similarity to the new generation of bainitic steel, i.e., due to change of microstructure from original pearlitic structure to final bainitic structure. Finally, fatigue crack growth parameters have shown that deposite layer has higher resistance to the crack growth, improving overall reliability of rails and crossings.
T2  - Strojniski Vestnik/Journal of Mechanical Engineering
T1  - Characterisation of high-carbon steel surface welded layer
IS  - 5
VL  - 56
UR  - https://hdl.handle.net/21.15107/rcub_rims_123
ER  - 

@article{
author = "Popović, Olivera and Prokić-Cvetković, Radica and Sedmak, Aleksandar and Grabulov, Vencislav and Burzić, Zijah and Rakin, Marko",
year = "2010",
abstract = "In this paper microstructural and mechanical properties of high-carbon steel surface welded layer, obtained with self-shielded flux cored wire, are presented in the case of a standard rails and crossings. The testing results of tensile characteristics, hardness, toughness via instrumented Charpy pendulum, microstructural analysis and fatigue crack growth resistance of all characteristical zones are analysed in details, especially from the point of view of interaction between microstructure and properties. Obtained results indicate superior properties of repaired welded layers, due to their similarity to the new generation of bainitic steel, i.e., due to change of microstructure from original pearlitic structure to final bainitic structure. Finally, fatigue crack growth parameters have shown that deposite layer has higher resistance to the crack growth, improving overall reliability of rails and crossings.",
journal = "Strojniski Vestnik/Journal of Mechanical Engineering",
title = "Characterisation of high-carbon steel surface welded layer",
number = "5",
volume = "56",
url = "https://hdl.handle.net/21.15107/rcub_rims_123"
}

Popović, O., Prokić-Cvetković, R., Sedmak, A., Grabulov, V., Burzić, Z.,& Rakin, M.. (2010). Characterisation of high-carbon steel surface welded layer. in Strojniski Vestnik/Journal of Mechanical Engineering, 56(5).
https://hdl.handle.net/21.15107/rcub_rims_123

Popović O, Prokić-Cvetković R, Sedmak A, Grabulov V, Burzić Z, Rakin M. Characterisation of high-carbon steel surface welded layer. in Strojniski Vestnik/Journal of Mechanical Engineering. 2010;56(5).
https://hdl.handle.net/21.15107/rcub_rims_123 .

Popović, Olivera, Prokić-Cvetković, Radica, Sedmak, Aleksandar, Grabulov, Vencislav, Burzić, Zijah, Rakin, Marko, "Characterisation of high-carbon steel surface welded layer" in Strojniski Vestnik/Journal of Mechanical Engineering, 56, no. 5 (2010),
https://hdl.handle.net/21.15107/rcub_rims_123 .

TY  - JOUR
AU  - Popović, Olivera
AU  - Prokić-Cvetković, Radica
AU  - Grabulov, Vencislav
AU  - Odanović, Zoran
PY  - 2006
UR  - http://rims.institutims.rs/handle/123456789/50
AB  - U savremenim uslovima eksploatacije, šine su izložene sve većim brzinama i osovinskim opterećenjima, pa se javljaju i sve veća eksploatacijska oštećenja. Dok je habanje šina značajno smanjeno uvođenjem u upotrebu odgovarajućih čelika i sredstava za podmazivanje, greške nastale usled kontaktnog zamora, tzv. RCF (rolling contact fatigue) greške, postaju sve veći problem na visoko opterećenim prugama. Reparatura oštećenih delova šina postupkom navarivanja je standardna metoda održavanja šina u svetu, a manjim delom kod nas, pa su razvijeni poluautomatski postupci koji su zamenili sporo ručno navarivanje obloženim elektrodama. U radu su prikazani rezultati primene nekih samozaštitnih punjenih žica i punjenih žica za rad u zaštiti CO2 gasa koji se koriste za navarivanje šina. Prikazano je kako vrsta dodatnog materijala utiče na raspodelu tvrdoće kroz presek spoja i makroskopski izgled navara. Dobijeni rezultati predstavljaju dobru osnovu za dalja ispitivanja u cilju određivanja eksploataciskog veka repariranih šina.
AB  - In modern railway exploitation, rails are exposed to a constant increase of speed and axles loads, which are causing increased exploitation damages. While wear has been reduced by introducing appropriate steel and lubricants rolling contact fatigue (RCF) defects have become more prominent on highly busy routes. Reparation of damaged rails by hard facing is standard method of maintenance in the world, but not in our country. Slowly manual processes are replaced by half-automatic welding processes. This paper describes behavior of some self-shielded flux cored wires and gas-shielded flux cored wires which are using for hard facing processes. Influence of the type of filler material on the hardness distribution and macroscopic view of deposit metal is also shown. These results should be used for further testing according to determination of remain life of repaired rails.
PB  - DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd
T2  - Zavarivanje i zavarene konstrukcije
T1  - Izbor punjenih žica za navarivanje železničkih šina
T1  - Selection of the flux cored wires for repair welding of the rails
EP  - 139
IS  - 4
SP  - 131
VL  - 51
UR  - https://hdl.handle.net/21.15107/rcub_machinery_625
ER  - 

@article{
author = "Popović, Olivera and Prokić-Cvetković, Radica and Grabulov, Vencislav and Odanović, Zoran",
year = "2006",
abstract = "U savremenim uslovima eksploatacije, šine su izložene sve većim brzinama i osovinskim opterećenjima, pa se javljaju i sve veća eksploatacijska oštećenja. Dok je habanje šina značajno smanjeno uvođenjem u upotrebu odgovarajućih čelika i sredstava za podmazivanje, greške nastale usled kontaktnog zamora, tzv. RCF (rolling contact fatigue) greške, postaju sve veći problem na visoko opterećenim prugama. Reparatura oštećenih delova šina postupkom navarivanja je standardna metoda održavanja šina u svetu, a manjim delom kod nas, pa su razvijeni poluautomatski postupci koji su zamenili sporo ručno navarivanje obloženim elektrodama. U radu su prikazani rezultati primene nekih samozaštitnih punjenih žica i punjenih žica za rad u zaštiti CO2 gasa koji se koriste za navarivanje šina. Prikazano je kako vrsta dodatnog materijala utiče na raspodelu tvrdoće kroz presek spoja i makroskopski izgled navara. Dobijeni rezultati predstavljaju dobru osnovu za dalja ispitivanja u cilju određivanja eksploataciskog veka repariranih šina., In modern railway exploitation, rails are exposed to a constant increase of speed and axles loads, which are causing increased exploitation damages. While wear has been reduced by introducing appropriate steel and lubricants rolling contact fatigue (RCF) defects have become more prominent on highly busy routes. Reparation of damaged rails by hard facing is standard method of maintenance in the world, but not in our country. Slowly manual processes are replaced by half-automatic welding processes. This paper describes behavior of some self-shielded flux cored wires and gas-shielded flux cored wires which are using for hard facing processes. Influence of the type of filler material on the hardness distribution and macroscopic view of deposit metal is also shown. These results should be used for further testing according to determination of remain life of repaired rails.",
publisher = "DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd",
journal = "Zavarivanje i zavarene konstrukcije",
title = "Izbor punjenih žica za navarivanje železničkih šina, Selection of the flux cored wires for repair welding of the rails",
pages = "139-131",
number = "4",
volume = "51",
url = "https://hdl.handle.net/21.15107/rcub_machinery_625"
}

Popović, O., Prokić-Cvetković, R., Grabulov, V.,& Odanović, Z.. (2006). Izbor punjenih žica za navarivanje železničkih šina. in Zavarivanje i zavarene konstrukcije
DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd., 51(4), 131-139.
https://hdl.handle.net/21.15107/rcub_machinery_625

Popović O, Prokić-Cvetković R, Grabulov V, Odanović Z. Izbor punjenih žica za navarivanje železničkih šina. in Zavarivanje i zavarene konstrukcije. 2006;51(4):131-139.
https://hdl.handle.net/21.15107/rcub_machinery_625 .

Popović, Olivera, Prokić-Cvetković, Radica, Grabulov, Vencislav, Odanović, Zoran, "Izbor punjenih žica za navarivanje železničkih šina" in Zavarivanje i zavarene konstrukcije, 51, no. 4 (2006):131-139,
https://hdl.handle.net/21.15107/rcub_machinery_625 .