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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.
2017-09-01
Source PublicationPERGAMON-ELSEVIER SCIENCE LTD
ISSN1359-6454
Volume136Pages:1-10
AbstractAn 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.
description.department[yang, c. l. ; zhang, z. j. ; zhang, p. ; zhang, z. f.] chinese acad sci, shenyang natl lab mat sci, inst met res, 72 wenhua rd, shenyang 110016, liaoning, peoples r china ; [yang, c. l. ; zhang, z. f.] univ chinese acad sci, 19 yuquan rd, beijing 100049, peoples r china
KeywordTwinning-induced Plasticity Steel Voids Necking Strain-hardening Rate
Subject AreaMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding OrganizationNational Natural Science Foundation of China (NSFC) [51401207, 51331007, U1664253]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/79129
Collection中国科学院金属研究所
Corresponding AuthorZhang, 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.
Recommended Citation
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.
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