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Microstructures and mechanical properties of Ti/Al/Mg/Al/Ti laminates with various rolling reductions

Published online by Cambridge University Press:  26 November 2018

Taolue Wang ,
Huihui Nie ,
Yujie Mi ,
Xinwei Hao ,
Fan Yang ,
Chengzhong Chi  and
Wei Liang
Taolue Wang
Affiliation:
Shanxi Key Laboratory of Advanced Magnesium-based Materials, Taiyuan University of Technology, Taiyuan 030024, People’s Republic of China; and College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, People’s Republic of China
Huihui Nie
Affiliation:
Shanxi Key Laboratory of Advanced Magnesium-based Materials, Taiyuan University of Technology, Taiyuan 030024, People’s Republic of China; and College of Mechanical Engineering, Taiyuan University of Technology, Taiyuan 030024, People’s Republic of China
Yujie Mi
Affiliation:
Shanxi Key Laboratory of Advanced Magnesium-based Materials, Taiyuan University of Technology, Taiyuan 030024, People’s Republic of China; and College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, People’s Republic of China
Xinwei Hao
Affiliation:
Shanxi Key Laboratory of Advanced Magnesium-based Materials, Taiyuan University of Technology, Taiyuan 030024, People’s Republic of China; and College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, People’s Republic of China
Fan Yang
Affiliation:
Shanxi Key Laboratory of Advanced Magnesium-based Materials, Taiyuan University of Technology, Taiyuan 030024, People’s Republic of China; and College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, People’s Republic of China
Chengzhong Chi
Affiliation:
Shanxi Key Laboratory of Advanced Magnesium-based Materials, Taiyuan University of Technology, Taiyuan 030024, People’s Republic of China
Wei Liang*
Affiliation:
Shanxi Key Laboratory of Advanced Magnesium-based Materials, Taiyuan University of Technology, Taiyuan 030024, People’s Republic of China; and College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, People’s Republic of China
*
a)Address all correspondence to this author. e-mail: liangwei@tyut.edu.cn
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Abstract

Ti/Al/Mg/Al/Ti laminates were fabricated by hot rolling at 450 °C with various rolling reductions, and the relationship between the mechanical properties and microstructures was investigated in detail. Both Al–Mg and Ti–Al interfaces are well bonded without pore, crack, and intermetallics. Mg layer of 50% rolling reduction has the most dynamic recrystallized (DRXed) grains around the deformation bands, and tensile twins appear in Mg layer when the rolling reduction increases to 60%. Large numbers of twins are formed to absorb the further strain as reduction increases. Ti layer shows equiaxed grains, which are not sensitive to thickness strain. Mg layers of laminates with various rolling reductions all exhibit typical (0002) basal texture. Fifty-percent rolling reduction has the largest ultimate tensile strength of 337.8 MPa, which is mainly owing to grain refinement caused by the extensive DRX. The differences of elongation among the three samples with different rolling reductions are small.

Keywords

Ti/Al/Mg/Al/Ti laminatesrolling reductionmechanical propertiesinterface structureDRX
Type
Article
Information
Journal of Materials Research , Volume 34 , Issue 2 , 28 January 2019 , pp. 344 - 353
Copyright
Copyright © Materials Research Society 2018 

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