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Influence of hot rolling on the interface microstructure and mechanical properties of explosive welded Mg/Al composite plates

Published online by Cambridge University Press:  06 February 2017

Dongya Wang
Affiliation:
Shanxi Key Laboratory of Advanced Magnesium-Based Materials, Taiyuan 030024, China; and College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
Xiaoqing Cao*
Affiliation:
Shanxi Key Laboratory of Advanced Magnesium-Based Materials, Taiyuan 030024, China; Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China; and College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
Lifei Wang
Affiliation:
Shanxi Key Laboratory of Advanced Magnesium-Based Materials, Taiyuan 030024, China; Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China; and College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
Miao Cao
Affiliation:
Shanxi Key Laboratory of Advanced Magnesium-Based Materials, Taiyuan 030024, China; and College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
Wenxian Wang
Affiliation:
Shanxi Key Laboratory of Advanced Magnesium-Based Materials, Taiyuan 030024, China; Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China; and College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
*
a) Address all correspondence to this author. e-mail: cxqtylg@126.com
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Abstract

The influence of hot rolling on the evolution of the interface microstructure as well as mechanical properties of the Mg/Al explosive welding composite plates was investigated. The hardening phenomenon induced by explosive welding could be eliminated effectively through preheating treatment. An intermetallic compound layer consisting of Al3Mg2 and Mg17Al12 was observed at the Mg/Al interface after annealing at 400 °C. The composite plate then was hot rolled at 400 °C with different reduction ratios. The composite plates presented different degrees of warp and edge cracks with increasing the reduction ratio. At the reduction ratio of 30%, the coordination deformation ability of the constituent Mg and Al alloys is consistent with the composite plate. The results showed that the tensile strength and the elongation of the composite plates increased significantly after hot rolling owing to the dynamic recrystallization and the intermetallic compounds thickness decrease during hot rolling.

Type
Articles
Copyright
Copyright © Materials Research Society 2017 

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Footnotes

Contributing Editor: Jürgen Eckert

References

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