Controllable Martensite Transformation and Strain-Controlled Fatigue Behavior of a Gradient Nanostructured Austenite Stainless Steel

doi:10.3390/nano11081870

IMR OpenIR

	Controllable Martensite Transformation and Strain-Controlled Fatigue Behavior of a Gradient Nanostructured Austenite Stainless Steel
	Lei, Yunbo; Xu, Jiuling; Wang, Zhenbo
通讯作者	Wang, Zhenbo(zbwang@imr.ac.cn)
	2021-08-01
发表期刊	NANOMATERIALS
卷号	11 期号:8 页码:11
摘要	Gradient nanostructured (GNS) surface layer with a controllable martensite fraction has been synthesized on 316L austenitic stainless steel by means of surface mechanical rolling treatment (SMRT) with temperature being controlled. The mean grain size is in the nanometer scale in the near-surface layer and increases gradually with depth. In addition, the volume fraction of martensite decreases from similar to 85% to 0 in the near-surface layer while the SMRT temperature increases from room temperature to 175 degrees C. Fatigue experiments showed that the strain-controlled fatigue properties of the GNS samples are significantly enhanced at total strain amplitudes >= 0.5%, especially in those with a dual-phase surface layer of austenite and pre-formed martensite. Analyses on fatigue mechanisms illustrated that the GNS surface layer enhances the strength-ductility synergy and suppresses the formation of surface fatigue defects during fatigue. In addition, the dual-phase structure promotes the formation of martensite and stacking faults, further enhancing fatigue properties at high strain amplitudes.
关键词	gradient nanostructured surface mechanical rolling treatment 316L stainless steel martensite transformation strain-controlled fatigue
资助者	National Key Research and Development Program of China ; Chinese Academy of Sciences ; Liaoning Revitalization Talents Program ; Shenyang National Laboratory for Materials Science
DOI	10.3390/nano11081870
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2017YFA0204401] ; National Key Research and Development Program of China[2017YFA0204403] ; Chinese Academy of Sciences[XDC04030301] ; Liaoning Revitalization Talents Program[XLYC1808008] ; Shenyang National Laboratory for Materials Science[2015RP04]
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目	Chemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
WOS记录号	WOS:000689852000001
出版者	MDPI
引用统计	被引频次：5[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/321006/166854
专题	中国科学院金属研究所
通讯作者	Wang, Zhenbo
作者单位	Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Lei, Yunbo,Xu, Jiuling,Wang, Zhenbo. Controllable Martensite Transformation and Strain-Controlled Fatigue Behavior of a Gradient Nanostructured Austenite Stainless Steel[J]. NANOMATERIALS,2021,11(8):11.
APA	Lei, Yunbo,Xu, Jiuling,&Wang, Zhenbo.(2021).Controllable Martensite Transformation and Strain-Controlled Fatigue Behavior of a Gradient Nanostructured Austenite Stainless Steel.NANOMATERIALS,11(8),11.
MLA	Lei, Yunbo,et al."Controllable Martensite Transformation and Strain-Controlled Fatigue Behavior of a Gradient Nanostructured Austenite Stainless Steel".NANOMATERIALS 11.8(2021):11.