Deformation mechanisms for a new medium-Mn steel with 1.1 GPa yield strength and 50% uniform elongation
文献类型：期刊论文
| 作者 | 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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| 刊名 | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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| 出版日期 | 2023-01 |
| 卷号 | 132页码:110-118 |
| ISSN号 | 1005-0302 |
| 关键词 | Medium-Mnsteel Strainhardening Ductility Martensitetransformation Straingradient Mobiledislocations |
| DOI | 10.1016/j.jmst.2022.05.048 |
| 英文摘要 | 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. |
| 分类号 | 一类 |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000826757600005 |
| 资助机构 | 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] |
| 其他责任者 | Yuan, FP (corresponding author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China. |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/92660]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 作者单位 | 1.{Liu Yanke, Zhang Zihan, Zhou Lingling, Yuan Fuping, Wu Xiaolei} Univ Chinese Acad Sci Sch Engn Sci Beijing 100049 Peoples R China 2.{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 |
| 推荐引用方式 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. |
| 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. |
入库方式： OAI收割
来源：力学研究所
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