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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
Source PublicationTRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
ISSN1003-6326
Volume25Issue:11Pages:3611-3617
AbstractThe 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.
description.department[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
KeywordNz31 Mg Alloy Portevin-le Chatelier Effect Serrated Flow Serration Type
Funding OrganizationNational Basic Research Program of China [2013CB632202]; National Natural Science Foundation of China [51301173]
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/74920
Collection中国科学院金属研究所
Corresponding Authordwu@imr.ac.cn
Recommended Citation
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.
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