Martensite instability induced surface hardening on gradient nano-structured 316L stainless steel

doi:10.1016/j.vacuum.2024.113831

IMR OpenIR

	Martensite instability induced surface hardening on gradient nano-structured 316L stainless steel
	Lei, Y. B.1; Niu, Z. M.1,2; Gao, B.1; Sun, Y. T.3
通讯作者	Lei, Y. B.(yblei@imr.ac.cn)
	2025
发表期刊	VACUUM
ISSN	0042-207X
卷号	231 页码:5
摘要	Gradient nanostructured (GNS) 316L stainless steel manufactured by surface mechanical rolling treatment (SMRT) with a full martensitic phase on the surface exhibits an extraordinary annealed hardening. The surface hardness increases by 44 % from 4.1 GPa of the SMRTed 316L stainless steel up to 5.9 GPa after annealed at 400 degrees C for 120 min. Surface hardening is primarily attributed to the formation of low angle grain boundaries (LAGBs) within the original nano-grains. LAGBs function as substructures that effectively divide the grains into smaller units. These LAGBs originate from lattice distortions caused by Ni segregation during the annealing process. Furthermore, the redistribution of Ni can be regarded as a nucleation step leading to phase reversion from martensite to austenite. Additionally, the presence of Ni-enriched zones distributed within the martensite matrix serves to hinder dislocation movement, thus contributing to the observed surface hardening.
关键词	Gradient nanostructures 316L stainless steel Deformation induced martensite Annealed hardening Ni redistribution
资助者	Doctoral Start-up Foundation of Liaoning Province ; Shenyang National Laboratory for Mate-rials Science
DOI	10.1016/j.vacuum.2024.113831
收录类别	SCI
语种	英语
资助项目	Doctoral Start-up Foundation of Liaoning Province[2023-BS-011] ; Shenyang National Laboratory for Mate-rials Science
WOS研究方向	Materials Science ; Physics
WOS类目	Materials Science, Multidisciplinary ; Physics, Applied
WOS记录号	WOS:001360070400001
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/191700
专题	中国科学院金属研究所
通讯作者	Lei, Y. B.
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China 3.Liaoning Acad Mat, Inst Mat Plainificat, Shenyang 110167, Peoples R China
推荐引用方式 GB/T 7714	Lei, Y. B.,Niu, Z. M.,Gao, B.,et al. Martensite instability induced surface hardening on gradient nano-structured 316L stainless steel[J]. VACUUM,2025,231:5.
APA	Lei, Y. B.,Niu, Z. M.,Gao, B.,&Sun, Y. T..(2025).Martensite instability induced surface hardening on gradient nano-structured 316L stainless steel.VACUUM,231,5.
MLA	Lei, Y. B.,et al."Martensite instability induced surface hardening on gradient nano-structured 316L stainless steel".VACUUM 231(2025):5.