Dynamic microstructural evolution in Mg-4Zn-2Al-2Sn alloy during hot deformation

IMR OpenIR

	Dynamic microstructural evolution in Mg-4Zn-2Al-2Sn alloy during hot deformation
	Zhao, Dongqing; Yang, Yuansheng; Zhou, Jixue; Liu, Yu; Zhan, Chengwei; zhaodq@sdas.org
	2016
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	657 页码:393-398
摘要	The dynamic microstructural evolution of the Mg-4Zn-2Al-2Sn (ZAT422) alloy during hot deformation was studied. The compression tests were carried out under the strain rate of 0.01 s(-1) and 5 s(-1) at 548 K and the strain rate of 5 s(-1) at 648 K. It was shown that the operating mechanisms of dynamic re crystallization (DRX) of ZAT422 alloy during hot deformation were affected by both strain rate and temperature. Parallel or crossed (1012) tension twins appeared in the sample deformed to the strain of 0.04 under the strain rate of 0.01 s(-1) at 548 K, while new grains with characteristics of discontinuous dynamic recrystallization (DDRX) occurred at corrugated grain boundaries. With the strain rate increasing from 0.01 s(-1) to 5 s(-1), the effect of twin dynamic recrystallization (TDRX) increased, and necklace structure of DRXed grains formed along the original grain boundaries and the deformation twin boundaries. When the temperature increased to 648 K, continuous dynamic recrystallization (CDRX) occurred within the recrystallized grains, resulting in the further refinement of the microstructure. And it should be noted that TDRX still occurred at this temperature. (C) 2016 Elsevier B.V. All rights reserved.
部门归属	[zhao, dongqing ; yang, yuansheng ; zhou, jixue ; liu, yu] shandong acad sci, new mat res inst, shandong key lab high strength lightweight metall, jinan, peoples r china ; [zhao, dongqing ; yang, yuansheng] chinese acad sci, inst met res, shenyang 110016, peoples r china ; [liu, yu ; zhan, chengwei] shandong acad sci, new mat res inst, shandong engn res ctr lightweight automobiles mag, jinan, peoples r china
关键词	Mg-4zn-2al-2sn Alloy Hot Deformation Microstructural Evolution Dynamic Recrystallization
资助者	National Basic Research Program of China [2013CB632205]; Shandong Provincial Natural Science Foundation, China [ZR2015YL007]
收录类别	sci
语种	英语
WOS记录号	WOS:000371550000042
引用统计	被引频次：18[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/74732
专题	中国科学院金属研究所
通讯作者	zhaodq@sdas.org
推荐引用方式 GB/T 7714	Zhao, Dongqing,Yang, Yuansheng,Zhou, Jixue,et al. Dynamic microstructural evolution in Mg-4Zn-2Al-2Sn alloy during hot deformation[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2016,657:393-398.
APA	Zhao, Dongqing,Yang, Yuansheng,Zhou, Jixue,Liu, Yu,Zhan, Chengwei,&zhaodq@sdas.org.(2016).Dynamic microstructural evolution in Mg-4Zn-2Al-2Sn alloy during hot deformation.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,657,393-398.
MLA	Zhao, Dongqing,et al."Dynamic microstructural evolution in Mg-4Zn-2Al-2Sn alloy during hot deformation".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 657(2016):393-398.