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Controllable Martensite Transformation and Strain-Controlled Fatigue Behavior of a Gradient Nanostructured Austenite Stainless Steel
Lei, Yunbo; Xu, Jiuling; Wang, Zhenbo
Corresponding AuthorWang, Zhenbo(zbwang@imr.ac.cn)
2021-08-01
Source PublicationNANOMATERIALS
Volume11Issue:8Pages:11
AbstractGradient 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.
Keywordgradient nanostructured surface mechanical rolling treatment 316L stainless steel martensite transformation strain-controlled fatigue
Funding OrganizationNational Key Research and Development Program of China ; Chinese Academy of Sciences ; Liaoning Revitalization Talents Program ; Shenyang National Laboratory for Materials Science
DOI10.3390/nano11081870
Indexed BySCI
Language英语
Funding ProjectNational 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 Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS SubjectChemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
WOS IDWOS:000689852000001
PublisherMDPI
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/166854
Collection中国科学院金属研究所
Corresponding AuthorWang, Zhenbo
AffiliationChinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China
Recommended Citation
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.
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