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Superior Strength and Ductility of 304 Austenitic Stainless Steel with Gradient Dislocations

文献类型：期刊论文

作者Pan, Qingsong2; Guo, Song1,2; Cui, Fang2; Jing, Lijun2; Lu, Lei2
刊名NANOMATERIALS
出版日期2021-10-01
卷号11期号:10页码:9
关键词gradient dislocations mechanical property low-angle boundary deformation twinning stainless steel
DOI10.3390/nano11102613
通讯作者Lu, Lei(llu@imr.ac.cn)
英文摘要Materials with designed gradient nanograins exhibit unprecedented mechanical properties, such as superior strength and ductility. In this study, a heterostructured 304 stainless steel with solely gradient dislocation structure (GDS) in micron-sized grains produced by cyclic-torsion processing was demonstrated to exhibit a substantially improved yield strength with slightly reduced uniform elongation, compared with its coarse grained counterparts. Microstructural observations reveal that multiple deformation mechanisms, associated with the formation of dense dislocation patterns, deformation twins and martensitic phase, are activated upon straining and contribute to the delocalized plastic deformation and the superior mechanical performance of the GDS 304 stainless steel.

资助项目National Science Foundation of China (NSFC)[51931010] ; National Science Foundation of China (NSFC)[92163202] ; National Science Foundation of China (NSFC)[52122104] ; National Science Foundation of China (NSFC)[52071321] ; Key Research Program of Frontier Science and International partnership program[GJHZ2029] ; Youth Innovation Promotion Association[2019196] ; Chinese Academy of Sciences (CAS), LiaoNing Revitalization Talents Program[XLYC1802026] ; SYNL Program
WOS研究方向Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种英语
WOS记录号WOS:000717110700001
出版者MDPI
资助机构National Science Foundation of China (NSFC) ; Key Research Program of Frontier Science and International partnership program ; Youth Innovation Promotion Association ; Chinese Academy of Sciences (CAS), LiaoNing Revitalization Talents Program ; SYNL Program
源URL[http://ir.imr.ac.cn/handle/321006/167239]  
专题金属研究所_中国科学院金属研究所
通讯作者Lu, Lei
作者单位1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
推荐引用方式
GB/T 7714		 Pan, Qingsong,Guo, Song,Cui, Fang,et al. Superior Strength and Ductility of 304 Austenitic Stainless Steel with Gradient Dislocations[J]. NANOMATERIALS,2021,11(10):9.
APA Pan, Qingsong,Guo, Song,Cui, Fang,Jing, Lijun,&Lu, Lei.(2021).Superior Strength and Ductility of 304 Austenitic Stainless Steel with Gradient Dislocations.NANOMATERIALS,11(10),9.
MLA Pan, Qingsong,et al."Superior Strength and Ductility of 304 Austenitic Stainless Steel with Gradient Dislocations".NANOMATERIALS 11.10(2021):9.

入库方式： OAI收割

来源：金属研究所

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