Proceedings of the International Symposium on Mechanical Engineering and Material Science

Research on friction stir welded joints of Copper to Magnesium alloy

Authors
Yuhua Chen, Jilin Xie, Wenming Cao
Corresponding Author
Yuhua Chen
Available Online December 2016.
DOI
https://doi.org/10.2991/ismems-16.2016.53How to use a DOI?
Keywords
Mg/Cu dissimilar joint, FSW, Microstructure, Mechanical properties
Abstract

Dissimilar magnesium alloy AZ31 and pure copper sheets with a thickness of 5mm were successfully friction stir welded. Microstructure and mechanical properties of the butt joints were investigated. Complicated microstructure was formed in the nugget zone, in which vortex-like pattern and lamella structure could be found. CuMg2 intermetallic compounds were found in the nugget zone. The hardness of the stir zone was much higher than that of the base material. The maximum value of hardness existing in the middle of the stir zone. Hardness values near the Mg side were relatively higher than that of near the Cu side in the weld zone. The ultimate tensile strength (UTS) of the joint was 86MPa and the joint failed with a brittle fracture modeDissimilar magnesium alloy AZ31 and pure copper sheets with a thickness of 5mm were successfully friction stir welded. Microstructure and mechanical properties of the butt joints were investigated. Complicated microstructure was formed in the nugget zone, in which vortex-like pattern and lamella structure could be found. CuMg2 intermetallic compounds were found in the nugget zone. The hardness of the stir zone was much higher than that of the base material. The maximum value of hardness existing in the middle of the stir zone. Hardness values near the Mg side were relatively higher than that of near the Cu side in the weld zone. The ultimate tensile strength (UTS) of the joint was 86MPa and the joint failed with a brittle fracture modeDissimilar magnesium alloy AZ31 and pure copper sheets with a thickness of 5mm were successfully friction stir welded. Microstructure and mechanical properties of the butt joints were investigated. Complicated microstructure was formed in the nugget zone, in which vortex-like pattern and lamella structure could be found. CuMg2 intermetallic compounds were found in the nugget zone. The hardness of the stir zone was much higher than that of the base material. The maximum value of hardness existing in the middle of the stir zone. Hardness values near the Mg side were relatively higher than that of near the Cu side in the weld zone. The ultimate tensile strength (UTS) of the joint was 86MPa and the joint failed with a brittle fracture mode

Copyright
© 2016, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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Volume Title
Proceedings of the International Symposium on Mechanical Engineering and Material Science
Series
Advances in Engineering Research
Publication Date
December 2016
ISBN
978-94-6252-277-0
ISSN
2352-5401
DOI
https://doi.org/10.2991/ismems-16.2016.53How to use a DOI?
Copyright
© 2016, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Cite this article

TY  - CONF
AU  - Yuhua Chen
AU  - Jilin Xie
AU  - Wenming Cao
PY  - 2016/12
DA  - 2016/12
TI  - Research on friction stir welded joints of Copper to Magnesium alloy
BT  - Proceedings of the International Symposium on Mechanical Engineering and Material Science
PB  - Atlantis Press
SP  - 310
EP  - 315
SN  - 2352-5401
UR  - https://doi.org/10.2991/ismems-16.2016.53
DO  - https://doi.org/10.2991/ismems-16.2016.53
ID  - Chen2016/12
ER  -