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Simultaneous Improvement of Yield Strength and Ductility at Cryogenic Temperature by Gradient Structure in 304 Stainless Steel

文献类型：期刊论文

作者Tan S(覃双)2; Yang MX(杨沐鑫)2; Yuan FP(袁福平)1,2; Wu XL(武晓雷)1,2
刊名NANOMATERIALS
出版日期2021-07-01
卷号11期号:7页码:12
关键词gradient structure ductility strain hardening martensitic transformation hetero-de-formation-induced hardening
DOI10.3390/nano11071856
通讯作者Yang, Muxin(mxyang@lnm.imech.ac.cn) ; Yuan, Fuping(fpyuan@lnm.imech.ac.cn)
英文摘要The tensile properties and the corresponding deformation mechanism of the graded 304 stainless steel (ss) at both room and cryogenic temperatures were investigated and compared with those of the coarse-grained (CGed) 304 ss. Gradient structures were found to have excellent synergy of strength and ductility at room temperature, and both the yield strength and the uniform elongation were found to be simultaneously improved at cryogenic temperature in the gradient structures, as compared to those for the CG sample. The hetero-deformation-induced (HDI) hardening was found to play a more important role in the gradient structures as compared to the CG sample and be more obvious at cryogenic temperature as compared to that at room temperature. The central layer in the gradient structures provides stronger strain hardening during tensile deformation at both temperatures, due to more volume fraction of martensitic transformation. The volume fraction of martensitic transformation in the gradient structures was found to be much higher at cryogenic temperature, resulting in a much stronger strain hardening at cryogenic temperature. The amount of martensitic transformation at the central layer of the gradient structures is observed to be even higher than that for the CG sample at cryogenic temperature, which is one of the origins for the simultaneous improvement of strength and ductility by the gradient structures at cryogenic temperature.
分类号二类/Q1
WOS关键词AUSTENITIC STAINLESS-STEEL ; MECHANICAL-PROPERTIES ; MARTENSITE FORMATION ; DISLOCATION DENSITY ; DEFORMATION ; PLASTICITY ; TENSILE ; METALS ; MICROSTRUCTURES ; STABILIZATION
资助项目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[52071326] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22040503]
WOS研究方向Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种英语
WOS记录号WOS:000676853900001
资助机构NSFC Basic Science Center Program for Multiscale Problems in Nonlinear Mechanics ; National Key R&D Program of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences
其他责任者Yang, Muxin ; Yuan, Fuping
源URL[http://dspace.imech.ac.cn/handle/311007/87071]  
专题力学研究所_非线性力学国家重点实验室
作者单位1.Univ Chinese Acad Sci, Sch Engn Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
2.Chinese Acad Sci, State Key Lab Nonlinear Mech, Inst Mech, 15 Beisihuan West Rd, Beijing 100190, Peoples R China;
推荐引用方式
GB/T 7714		 Tan S,Yang MX,Yuan FP,et al. Simultaneous Improvement of Yield Strength and Ductility at Cryogenic Temperature by Gradient Structure in 304 Stainless Steel[J]. NANOMATERIALS,2021,11(7):12.
APA 覃双,杨沐鑫,袁福平,&武晓雷.(2021).Simultaneous Improvement of Yield Strength and Ductility at Cryogenic Temperature by Gradient Structure in 304 Stainless Steel.NANOMATERIALS,11(7),12.
MLA 覃双,et al."Simultaneous Improvement of Yield Strength and Ductility at Cryogenic Temperature by Gradient Structure in 304 Stainless Steel".NANOMATERIALS 11.7(2021):12.

入库方式： OAI收割

来源：力学研究所

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