TY  - JOUR
AU  - Veljić, Darko M.
AU  - Sedmak, Aleksandar
AU  - Rakin, Marko
AU  - Bajić, Nikola S.
AU  - Međo, Bojan
AU  - Bajić, Darko R.
AU  - Grabulov, Vencislav
PY  - 2014
UR  - http://rims.institutims.rs/handle/123456789/237
AB  - This paper presents experimental and numerical analysis of the change of temperature and force in the vertical direction during the friction stir welding of high-strength aluminium alloy 2024 T3. This procedure confirmed the correctness of the numerical model, which is subsequently used for analysis of the temperature field in the welding zone, where it is different to determine the temperature experimentally. 3D finite element model is developed using the software package Abaqus; arbitrary Lagrangian-Eulerian formulation is applied. Johnson-Cook material law and Coulomb's Law of friction are used for modelling the material behaviour. Temperature fields are symmetrical with respect to the welding line. The temperature values below the tool shoulder, i.e. in the welding zone, which are reached during the plunge stage, are approximately constant during the entire welding process and lie within the interval 430-502 degrees C. The temperature of the material in the vicinity of the tool is about 500 degrees C, while the values on the top surface of the welding plates (outside the welding zone, but close to the tool shoulder) are about 400 degrees C. The temperature difference between the top and bottom surface of the plates is small, 10-15 degrees C.
PB  - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
T2  - Thermal Science
T1  - Experimental and numerical thermo - mechanical analysis of friction stir welding of high - strength alluminium alloy
EP  - S38
SP  - S29
VL  - 18
DO  - 10.2298/TSCI130512171V
ER  - 

@article{
author = "Veljić, Darko M. and Sedmak, Aleksandar and Rakin, Marko and Bajić, Nikola S. and Međo, Bojan and Bajić, Darko R. and Grabulov, Vencislav",
year = "2014",
abstract = "This paper presents experimental and numerical analysis of the change of temperature and force in the vertical direction during the friction stir welding of high-strength aluminium alloy 2024 T3. This procedure confirmed the correctness of the numerical model, which is subsequently used for analysis of the temperature field in the welding zone, where it is different to determine the temperature experimentally. 3D finite element model is developed using the software package Abaqus; arbitrary Lagrangian-Eulerian formulation is applied. Johnson-Cook material law and Coulomb's Law of friction are used for modelling the material behaviour. Temperature fields are symmetrical with respect to the welding line. The temperature values below the tool shoulder, i.e. in the welding zone, which are reached during the plunge stage, are approximately constant during the entire welding process and lie within the interval 430-502 degrees C. The temperature of the material in the vicinity of the tool is about 500 degrees C, while the values on the top surface of the welding plates (outside the welding zone, but close to the tool shoulder) are about 400 degrees C. The temperature difference between the top and bottom surface of the plates is small, 10-15 degrees C.",
publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd",
journal = "Thermal Science",
title = "Experimental and numerical thermo - mechanical analysis of friction stir welding of high - strength alluminium alloy",
pages = "S38-S29",
volume = "18",
doi = "10.2298/TSCI130512171V"
}

Veljić, D. M., Sedmak, A., Rakin, M., Bajić, N. S., Međo, B., Bajić, D. R.,& Grabulov, V.. (2014). Experimental and numerical thermo - mechanical analysis of friction stir welding of high - strength alluminium alloy. in Thermal Science
Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd., 18, S29-S38.
https://doi.org/10.2298/TSCI130512171V

Veljić DM, Sedmak A, Rakin M, Bajić NS, Međo B, Bajić DR, Grabulov V. Experimental and numerical thermo - mechanical analysis of friction stir welding of high - strength alluminium alloy. in Thermal Science. 2014;18:S29-S38.
doi:10.2298/TSCI130512171V .

Veljić, Darko M., Sedmak, Aleksandar, Rakin, Marko, Bajić, Nikola S., Međo, Bojan, Bajić, Darko R., Grabulov, Vencislav, "Experimental and numerical thermo - mechanical analysis of friction stir welding of high - strength alluminium alloy" in Thermal Science, 18 (2014):S29-S38,
https://doi.org/10.2298/TSCI130512171V . .

TY  - JOUR
AU  - Radisavljević, Igor
AU  - Živković, Aleksandar
AU  - Radović, Nenad
AU  - Grabulov, Vencislav
PY  - 2013
UR  - http://rims.institutims.rs/handle/123456789/204
AB  - The influence of R/v ratio on joint quality in 2024-T351 aluminum alloy was studied. Specimens were subjected to friction stir welding with the rotation rates of 750, 950 and 1180 r/min and welding speed between 73 and 190 mm/min, providing R/v ratio between 5.00 and 10.27. The welded joints were tested by means of both non-destructive (visual, penetrant and X-ray inspection) and destructive (metallographic, tension and hardness) testing. In all specimens typical zones are revealed, with corresponding differences in grain size. Tensile efficiency of the joints obtained is in the range of 52.2% to 82.3%. The results show that the best quality is obtained at R/v ratio of 8.06, 10.17 and 10.27. This behavior is attributed to the assumption that the material flows around the pin with an optimal speed, i.e. sufficient amount of material is available to fill the gap and prevent tunnel formation. R/v ratio also showed influence on hardness distribution, onion features and crack initiation/propagation zones.
PB  - Elsevier, Amsterdam
T2  - Transactions of Nonferrous Metals Society of China
T1  - Influence of FSW parameters on formation quality and mechanical properties of Al 2024-T351 butt welded joints
EP  - 3539
IS  - 12
SP  - 3525
VL  - 23
DO  - 10.1016/S1003-6326(13)62897-6
ER  - 

@article{
author = "Radisavljević, Igor and Živković, Aleksandar and Radović, Nenad and Grabulov, Vencislav",
year = "2013",
abstract = "The influence of R/v ratio on joint quality in 2024-T351 aluminum alloy was studied. Specimens were subjected to friction stir welding with the rotation rates of 750, 950 and 1180 r/min and welding speed between 73 and 190 mm/min, providing R/v ratio between 5.00 and 10.27. The welded joints were tested by means of both non-destructive (visual, penetrant and X-ray inspection) and destructive (metallographic, tension and hardness) testing. In all specimens typical zones are revealed, with corresponding differences in grain size. Tensile efficiency of the joints obtained is in the range of 52.2% to 82.3%. The results show that the best quality is obtained at R/v ratio of 8.06, 10.17 and 10.27. This behavior is attributed to the assumption that the material flows around the pin with an optimal speed, i.e. sufficient amount of material is available to fill the gap and prevent tunnel formation. R/v ratio also showed influence on hardness distribution, onion features and crack initiation/propagation zones.",
publisher = "Elsevier, Amsterdam",
journal = "Transactions of Nonferrous Metals Society of China",
title = "Influence of FSW parameters on formation quality and mechanical properties of Al 2024-T351 butt welded joints",
pages = "3539-3525",
number = "12",
volume = "23",
doi = "10.1016/S1003-6326(13)62897-6"
}

Radisavljević, I., Živković, A., Radović, N.,& Grabulov, V.. (2013). Influence of FSW parameters on formation quality and mechanical properties of Al 2024-T351 butt welded joints. in Transactions of Nonferrous Metals Society of China
Elsevier, Amsterdam., 23(12), 3525-3539.
https://doi.org/10.1016/S1003-6326(13)62897-6

Radisavljević I, Živković A, Radović N, Grabulov V. Influence of FSW parameters on formation quality and mechanical properties of Al 2024-T351 butt welded joints. in Transactions of Nonferrous Metals Society of China. 2013;23(12):3525-3539.
doi:10.1016/S1003-6326(13)62897-6 .

Radisavljević, Igor, Živković, Aleksandar, Radović, Nenad, Grabulov, Vencislav, "Influence of FSW parameters on formation quality and mechanical properties of Al 2024-T351 butt welded joints" in Transactions of Nonferrous Metals Society of China, 23, no. 12 (2013):3525-3539,
https://doi.org/10.1016/S1003-6326(13)62897-6 . .