| Deformation mechanisms for a new medium-Mn steel with 1.1 GPa yield strength and 50% uniform elongation | |
Wang W(王为); Liu YK(刘琰珂) ; Zhang ZH(张子晗); Yang MX(杨沐鑫); Zhou LL(周玲玲); Wang J(王晶); Jiang P(姜萍); Yuan FP(袁福平); Wu XL(武晓雷)
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| Source Publication | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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| 2023-01 | |
| Volume | 132Pages:110-118 |
| ISSN | 1005-0302 |
| Abstract | A new medium-Mn steel was designed to achieve unprecedented tensile properties, with a yield strength beyond 1.1 GPa and a uniform elongation over 50%. The tensile behavior shows a heterogeneous deforma-tion feature, which displays a yield drop followed by a large LAlders band strain and several Portevin-Le Chatelier bands. Multiple strain hardening mechanisms for excellent tensile properties were revealed. Firstly, non-uniform martensite transformation occurs only within a localized deformation band, and ini-tiation and propagation of every localized deformation band need only a small amount of martensite transformation, which can provide a persistent and complete transformation-induced-plasticity effect dur-ing a large strain range. Secondly, geometrically necessary dislocations induced from macroscopic strain gradient at the front of localized deformation band and microscopic strain gradient among various phases provide strong heter-deformation-induced hardening. Lastly, martensite formed by displacive shear trans-formation can inherently generate a high density of mobile screw dislocations, and interstitial C atoms segregated at phase boundaries and enriched in austenite play a vital role in the dislocation multipli-cation due to the dynamic strain aging effect, and these two effects provide a high density of mobile dislocations for strong strain hardening. (c) 2022 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology. |
| Keyword | Medium-Mnsteel Strainhardening Ductility Martensitetransformation Straingradient Mobiledislocations |
| DOI | 10.1016/j.jmst.2022.05.048 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000826757600005 |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| Funding Organization | National Key R&D Program of China [2017YFA0204402] ; NSFC Basic Science Center Program for Multiscale Problems in Nonlinear Mechanics [11988102] ; National Natural Science Foundation of China [11790293, 52192591] |
| Classification | 一类 |
| Ranking | 1 |
| Contributor | Yuan, FP (corresponding author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China. |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/92660 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 1.{Wang Wei, Liu Yanke, Zhang Zihan, Yang Muxin, Zhou Lingling, Wang Jing, Jiang Ping, Yuan Fuping, Wu Xiaolei} Chinese Acad Sci Inst Mech State Key Lab Nonlinear Mech Beijing 100190 Peoples R China 2.{Liu Yanke, Zhang Zihan, Zhou Lingling, Yuan Fuping, Wu Xiaolei} Univ Chinese Acad Sci Sch Engn Sci Beijing 100049 Peoples R China |
| Recommended Citation GB/T 7714 | Wang W,Liu YK,Zhang ZH,et al. Deformation mechanisms for a new medium-Mn steel with 1.1 GPa yield strength and 50% uniform elongation[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2023,132:110-118.Rp_Au:Yuan, FP (corresponding author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China. |
| APA | 王为.,刘琰珂.,张子晗.,杨沐鑫.,周玲玲.,...&武晓雷.(2023).Deformation mechanisms for a new medium-Mn steel with 1.1 GPa yield strength and 50% uniform elongation.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,132,110-118. |
| MLA | 王为,et al."Deformation mechanisms for a new medium-Mn steel with 1.1 GPa yield strength and 50% uniform elongation".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 132(2023):110-118. |
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| Jp2023Fa184.pdf（4299KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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