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Fine tuning of dwelling time in friction stir welding for preventing material overheating, weld tensile strength increase and weld nugget size decrease

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2016
1907.pdf (4.151Mb)
Authors
Mijajlovic, Miroslav M.
Vidojković, Sonja
Article (Published version)
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Abstract
After successful welding, destructive testing into test samples from Al 2024-T351 friction stir butt welds showed that tensile strength of the weld improve along the joint line, while dimensions of the weld nugget decrease. For those welds, both the base material and the welding tool constantly cool down during the welding phase. Obviously, the base material became overheated during the long dwelling phase what made conditions for creation of joints with the reduced mechanical properties. Preserving all process parameters but varying the dwelling time from 5-27 seconds a new set of welding is done to reach maximal achievable tensile strength. An analytical-numerical-experimental model is used for optimising the duration of the dwelling time while searching for the maximal tensile strength of the welds.
Keywords:
friction stir welding / Al 2024-T351 / overheating / dwelling time
Source:
Thermal Science, 2016, 20, 6, 2137-2147
Publisher:
  • VINCA Institute of Nuclear Sciences

DOI: 10.2298/TSCI160102102M

ISSN: 0354-9836

WoS: 000391079000031

[ Google Scholar ]
URI
https://cer.ihtm.bg.ac.rs/handle/123456789/1909
Collections
  • Radovi istraživača / Researchers' publications
Institution/Community
IHTM
TY  - JOUR
AU  - Mijajlovic, Miroslav M.
AU  - Vidojković, Sonja
PY  - 2016
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1909
AB  - After successful welding, destructive testing into test samples from Al 2024-T351 friction stir butt welds showed that tensile strength of the weld improve along the joint line, while dimensions of the weld nugget decrease. For those welds, both the base material and the welding tool constantly cool down during the welding phase. Obviously, the base material became overheated during the long dwelling phase what made conditions for creation of joints with the reduced mechanical properties. Preserving all process parameters but varying the dwelling time from 5-27 seconds a new set of welding is done to reach maximal achievable tensile strength. An analytical-numerical-experimental model is used for optimising the duration of the dwelling time while searching for the maximal tensile strength of the welds.
PB  - VINCA Institute of Nuclear Sciences
T2  - Thermal Science
T1  - Fine tuning of dwelling time in friction stir welding for preventing material overheating, weld tensile strength increase and weld nugget size decrease
VL  - 20
IS  - 6
SP  - 2137
EP  - 2147
DO  - 10.2298/TSCI160102102M
ER  - 
@article{
author = "Mijajlovic, Miroslav M. and Vidojković, Sonja",
year = "2016",
abstract = "After successful welding, destructive testing into test samples from Al 2024-T351 friction stir butt welds showed that tensile strength of the weld improve along the joint line, while dimensions of the weld nugget decrease. For those welds, both the base material and the welding tool constantly cool down during the welding phase. Obviously, the base material became overheated during the long dwelling phase what made conditions for creation of joints with the reduced mechanical properties. Preserving all process parameters but varying the dwelling time from 5-27 seconds a new set of welding is done to reach maximal achievable tensile strength. An analytical-numerical-experimental model is used for optimising the duration of the dwelling time while searching for the maximal tensile strength of the welds.",
publisher = "VINCA Institute of Nuclear Sciences",
journal = "Thermal Science",
title = "Fine tuning of dwelling time in friction stir welding for preventing material overheating, weld tensile strength increase and weld nugget size decrease",
volume = "20",
number = "6",
pages = "2137-2147",
doi = "10.2298/TSCI160102102M"
}
Mijajlovic, M. M.,& Vidojković, S.. (2016). Fine tuning of dwelling time in friction stir welding for preventing material overheating, weld tensile strength increase and weld nugget size decrease. in Thermal Science
VINCA Institute of Nuclear Sciences., 20(6), 2137-2147.
https://doi.org/10.2298/TSCI160102102M
Mijajlovic MM, Vidojković S. Fine tuning of dwelling time in friction stir welding for preventing material overheating, weld tensile strength increase and weld nugget size decrease. in Thermal Science. 2016;20(6):2137-2147.
doi:10.2298/TSCI160102102M .
Mijajlovic, Miroslav M., Vidojković, Sonja, "Fine tuning of dwelling time in friction stir welding for preventing material overheating, weld tensile strength increase and weld nugget size decrease" in Thermal Science, 20, no. 6 (2016):2137-2147,
https://doi.org/10.2298/TSCI160102102M . .

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