Strain rate-dependent high temperature compressive deformation characteristics of ultrafine-grained pure aluminum produced by ECAP

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	Strain rate-dependent high temperature compressive deformation characteristics of ultrafine-grained pure aluminum produced by ECAP
	Yan Ying 1; Qi Yue 1; Chen Lijia 1; Li Xiaowu 1
刊名	TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
	2016
卷号	26 期号:4 页码:966-973
关键词	RATE SENSITIVITY MECHANICAL-PROPERTIES BEHAVIOR COPPER CU ALLOY AL MICROSTRUCTURE FEATURES METALS equal channel angular pressing (ECAP) pure Al strain rate high temperature compression deformation damage microstructure
ISSN号	1003-6326
其他题名	Strain rate-dependent high temperature compressive deformation characteristics of ultrafine-grained pure aluminum produced by ECAP
英文摘要	To explore the effect of strain rate (epsilon) over dot on the high temperature deformation characteristics of ultrafine-grained materials, the deformation and damage features as well as microstructures of ECAP-treated pure Al at different temperatures T and strain rates (epsilon) over dot were systematically studied through compression tests and microscopic observations. The increase in (epsilon) over dot eliminates strain softening at T = 473 K and secondary SBs basically disappear at 1x10(-3) s(-1); however, at 1x10(-2) s(-1), cracks are only observed at temperature below 473 K, and secondary SBs become clearer at T >= 473 K. The microstructures of ECAP-treated Al mainly consist of sub-grains (SGs). The increase in (epsilon) over dot inhibits the SG growth, thus leading to the increases both in yield strength and flow stress at high temperatures.
资助项目	[National Natural Science Foundation of China]
语种	英语
CSCD记录号	CSCD:5702929
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/144473]
专题	金属研究所_中国科学院金属研究所
作者单位	1.中国科学院金属研究所 2.上海市地震局
推荐引用方式 GB/T 7714	Yan Ying,Qi Yue,Chen Lijia,et al. Strain rate-dependent high temperature compressive deformation characteristics of ultrafine-grained pure aluminum produced by ECAP[J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,2016,26(4):966-973.
APA	Yan Ying,Qi Yue,Chen Lijia,&Li Xiaowu.(2016).Strain rate-dependent high temperature compressive deformation characteristics of ultrafine-grained pure aluminum produced by ECAP.TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,26(4),966-973.
MLA	Yan Ying,et al."Strain rate-dependent high temperature compressive deformation characteristics of ultrafine-grained pure aluminum produced by ECAP".TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA 26.4(2016):966-973.