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Exceptional tensile properties under cryogenic temperature in heterogeneous laminates induced by non-uniform martensite transformation and strain delocalization

文献类型：期刊论文

作者He JY(何金燕)2,3; Yuan FP(袁福平)2,3; Yang MX(杨沐鑫)3; Zhou LL(周玲玲)3; Jiao SH1; Wu XL(武晓雷)2,3
刊名MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
出版日期2020-07-22
卷号791页码:10
关键词Twins Heterogeneous laminates Cryogenic tensile properties Martensite transformation Strain delocalization
ISSN号0921-5093
DOI10.1016/j.msea.2020.139780
英文摘要In the present study, the heterogeneous low C steel/304 austenite stainless steel (SS) laminates were observed to have exceptional tensile properties under cryogenic temperature, i.e., the yield strength and the uniform elongation were found to be significantly elevated simultaneously compared to these under room temperature. The underlying deformation mechanisms have been revealed by a novel tensile testing method coupled with in-situ digital image correlation imaging under cryogenic environment, and subsequent microstructure observations. Strain localization was found to initiate from low C steel, propagate across the interface and then towards 304 SS side. While the formed localized strain zone (LSZ) was observed to be delocalized at larger tensile strain due to the propagation of LSZ towards the un-deformed region along the gage length. Martensite transformation was found to be concentrated in the LSZ of 304 SS to regain strain hardening ability and reduce severity of strain concentration. Strain partitioning between 304 SS and low C steel was found to be more significant in the LSZ than that out of the LSZ. The non-uniform martensite transformation along the gage length should be the origin for the strain delocalization in the LSZ, resulting in large ductility in the laminates under cryogenic temperature.
分类号一类
WOS关键词AUSTENITIC STAINLESS-STEEL ; CHARPY IMPACT PROPERTIES ; INDUCED PLASTICITY STEEL ; MECHANICAL-PROPERTIES ; HIGH-STRENGTH ; DEFORMATION MECHANISMS ; GRADIENT PLASTICITY ; DUCTILITY ; MN ; DESIGN
WOS研究方向Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
WOS记录号WOS:000551484000042
资助机构NSFC Basic Science Center Program for Multiscale Problems in Nonlinear Mechanics[11988102] ; National Key R&D Program of China[2017YFA0204402] ; National Natural Science Foundation of China[11672313] ; National Natural Science Foundation of China[11572328] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22040503]
其他责任者Yuan, Fuping
源URL[http://dspace.imech.ac.cn/handle/311007/84746]  
专题力学研究所_非线性力学国家重点实验室
作者单位1.Baoshan Iron & Steel Co Ltd, Baosteel Res Inst, Shanghai 201900, Peoples R China
2.Univ Chinese Acad Sci, Sch Engn Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China;
3.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, 15 Beisihuan West Rd, Beijing 100190, Peoples R China;
推荐引用方式
GB/T 7714		 He JY,Yuan FP,Yang MX,et al. Exceptional tensile properties under cryogenic temperature in heterogeneous laminates induced by non-uniform martensite transformation and strain delocalization[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2020,791:10.
APA 何金燕,袁福平,杨沐鑫,周玲玲,Jiao SH,&武晓雷.(2020).Exceptional tensile properties under cryogenic temperature in heterogeneous laminates induced by non-uniform martensite transformation and strain delocalization.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,791,10.
MLA 何金燕,et al."Exceptional tensile properties under cryogenic temperature in heterogeneous laminates induced by non-uniform martensite transformation and strain delocalization".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 791(2020):10.

入库方式： OAI收割

来源：力学研究所

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