Influence of temperature and strain rate on serration type transition in NZ31 Mg alloy

IMR OpenIR

	Influence of temperature and strain rate on serration type transition in NZ31 Mg alloy
其他题名	Influence of temperature and strain rate on serration type transition in NZ31 Mg alloy
	Wang, Wen-hui; Wu, Di; Chen, Rong-shi; Lou, Chang-sheng; dwu@imr.ac.cn
	2015
发表期刊	TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
ISSN	1003-6326
卷号	25 期号:11 页码:3611-3617
摘要	The process of tensile test at different temperatures and strain rates was used to study the characteristics of serrated flow, i.e., Portevin-Le Chatelier effect (PLC), in NZ31 Mg alloy. The PLC effect in the tensile stress-strain curves was observed at the temperature range of 150-250 degrees C. Serrated flow during the deformation at 250 degrees C is prominent, and a lot of slip bands with a specific direction in each grain can be observed in the microstructure. The serration changes from type A to type C with the increase of temperature and the decrease of strain rate. One single serration of type A was described specifically by the processes of partial pinning, absolute pinning and unpinning. The enhancement of pinning ability at high temperature and low strain rate can promote the absolute pinning process and restrain the unpinning process, which explains the serration type transition.
其他摘要	The process of tensile test at different temperatures and strain rates was used to study the characteristics of serrated flow, i. e., Portevin-Le Chatelier effect (PLC), in NZ31 Mg alloy. The PLC effect in the tensile stress-strain curves was observed at the temperature range of 150-250 °C. Serrated flow during the deformation at 250 °C is prominent, and a lot of slip bands with a specific direction in each grain can be observed in the microstructure. The serration changes from type A to type C with the increase of temperature and the decrease of strain rate. One single serration of type A was described specifically by the processes of partial pinning, absolute pinning and unpinning. The enhancement of pinning ability at high temperature and low strain rate can promote the absolute pinning process and restrain the unpinning process, which explains the serration type transition.
部门归属	[wang, wen-hui ; lou, chang-sheng] shenyang ligong univ, sch mat sci & engn, shenyang 110159, peoples r china ; [wang, wen-hui ; wu, di ; chen, rong-shi] chinese acad sci, inst met res, shenyang 110016, peoples r china
关键词	Nz31 Mg Alloy Portevin-le Chatelier Effect Serrated Flow Serration Type
资助者	National Basic Research Program of China [2013CB632202]; National Natural Science Foundation of China [51301173]
收录类别	sci
语种	英语
资助项目	[National Basic Research Program of China] ; [National Natural Science Foundation of China]
WOS记录号	WOS:000368040600013
CSCD记录号	CSCD:5592750
引用统计	被引频次：10[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/321006/74920
专题	中国科学院金属研究所
通讯作者	dwu@imr.ac.cn
推荐引用方式 GB/T 7714	Wang, Wen-hui,Wu, Di,Chen, Rong-shi,et al. Influence of temperature and strain rate on serration type transition in NZ31 Mg alloy[J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,2015,25(11):3611-3617.
APA	Wang, Wen-hui,Wu, Di,Chen, Rong-shi,Lou, Chang-sheng,&dwu@imr.ac.cn.(2015).Influence of temperature and strain rate on serration type transition in NZ31 Mg alloy.TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,25(11),3611-3617.
MLA	Wang, Wen-hui,et al."Influence of temperature and strain rate on serration type transition in NZ31 Mg alloy".TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA 25.11(2015):3611-3617.