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Influence of strain rate on dynamic recrystallization behavior of AZ61 magnesium alloy

Yang, Xu-yue, Zhang, Zhi-ling, Zhang, Lei, Wu, Xin-xing and Wang, Jun 2011, Influence of strain rate on dynamic recrystallization behavior of AZ61 magnesium alloy, Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals, vol. 21, no. 8, pp. 1801-1807.

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Title Influence of strain rate on dynamic recrystallization behavior of AZ61 magnesium alloy
Author(s) Yang, Xu-yue
Zhang, Zhi-ling
Zhang, Lei
Wu, Xin-xing
Wang, Jun
Journal name Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals
Volume number 21
Issue number 8
Start page 1801
End page 1807
Total pages 7
Publisher Editorial Office of The Chinese Journal of Nonferrous Metals
Place of publication Changsha, China
Publication date 2011-08
ISSN 1004-0609
Keyword(s) AZ61 magnesium alloy
high temperature deformation
strain rate
dynamic recrystallization
twin
Summary The deformation and dynamic recrystallization behavior of magnesium alloy AZ61 were studied at 623 K and 3×10-5-3×10-1 s-1 by optical and SEM/EBSD metallographic observation. The results show that the flow stresses and the dynamic recrystallization behavior are dependent on strain rates. With the increase of the strain rate, the strain rate sensitivity becomes weaker for steady state stresses while the strain rate sensitivity for the peak stress decreases firstly then increases obviously. Increasing strain rate can accelerate the process of dynamic recrystallization and the development of coarse {1012} twins which are harmful to get a complete recrystallization structure leading to the decrease of fractional recrystallization. Bulging mechanism for dynamic recrystallization nucleation operates mainly at lower strain rate, whereas the dynamic recrystallization substructure developed at higher strain rate is characterized by twin intersections. The difference of deformation mode leads to the operation of different mechanisms of dynamic recrystallization nucleation.
Language chi
Indigenous content off
Field of Research 0914 Resources Engineering and Extractive Metallurgy
HERDC Research category C1.1 Refereed article in a scholarly journal
Free to Read? Yes
Persistent URL http://hdl.handle.net/10536/DRO/DU:30124867

Document type: Journal Article
Collections: Institute for Frontier Materials
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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.