The premature necking of twinning-induced plasticity steels

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	The premature necking of twinning-induced plasticity steels
	Yang, C. L.; Zhang, Z. J.; Zhang, P.; Zhang, Z. F.; Zhang, ZJ; Zhang, ZF (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.
刊名	PERGAMON-ELSEVIER SCIENCE LTD
	2017-09-01
卷号	136 页码:1-10
关键词	Twinning-induced Plasticity Steel Voids Necking Strain-hardening Rate
ISSN号	1359-6454
英文摘要	An unusual necking behavior was found in twinning-induced plasticity (TWIP) steels during tensile tests, which is quite different from that observed on most ductile metals. A sharp drop of the strain-hardening rate (CI) arises before necking initiation, rather than after it, leading to the premature necking of TWIP steels. Through carefully examining the evolution of macroscopic defects at various tensile strains using three-dimensional X-ray tomography (3D-XRT), this premature necking behavior was attributed to the multiplication of macroscopic voids during plastic deformation. Combining with the previous theories and present characterizations on the evolution of macroscopic voids, the mechanism of the unusual necking behavior in TWIP steels was quantificationally revealed. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.; An unusual necking behavior was found in twinning-induced plasticity (TWIP) steels during tensile tests, which is quite different from that observed on most ductile metals. A sharp drop of the strain-hardening rate (CI) arises before necking initiation, rather than after it, leading to the premature necking of TWIP steels. Through carefully examining the evolution of macroscopic defects at various tensile strains using three-dimensional X-ray tomography (3D-XRT), this premature necking behavior was attributed to the multiplication of macroscopic voids during plastic deformation. Combining with the previous theories and present characterizations on the evolution of macroscopic voids, the mechanism of the unusual necking behavior in TWIP steels was quantificationally revealed. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
学科主题	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
语种	英语
资助机构	National Natural Science Foundation of China (NSFC) [51401207, 51331007, U1664253]
公开日期	2018-01-10
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/79129]
专题	金属研究所_中国科学院金属研究所
通讯作者	Zhang, ZJ; Zhang, ZF (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.
推荐引用方式 GB/T 7714	Yang, C. L.,Zhang, Z. J.,Zhang, P.,et al. The premature necking of twinning-induced plasticity steels[J]. PERGAMON-ELSEVIER SCIENCE LTD,2017,136:1-10.
APA	Yang, C. L.,Zhang, Z. J.,Zhang, P.,Zhang, Z. F.,Zhang, ZJ,&Zhang, ZF .(2017).The premature necking of twinning-induced plasticity steels.PERGAMON-ELSEVIER SCIENCE LTD,136,1-10.
MLA	Yang, C. L.,et al."The premature necking of twinning-induced plasticity steels".PERGAMON-ELSEVIER SCIENCE LTD 136(2017):1-10.