IMECH-IR  > 非线性力学国家重点实验室
Microstructure Evolution and Tensile Properties of 304L Stainless Steel Subjected to Surface Mechanical Attrition Treatment
Jiang P(姜萍); Lu J; Wu XL(武晓雷); Jiang, P (reprint author), Chinese Acad Sci, State Key Lab Nonlinear Mech, Inst Mech, Beijing 100190, Peoples R China
Source PublicationNANOMATERIALS BY SEVERE PLASTIC DEFORMATION: NANOSPD5, PTS 1 AND 2
2011
Pages175-179
Conference Name5th International Conference on Nanomaterials by Severe Plastic Deformation
Conference DateMAR 21-25, 2011
Conference PlaceNanjing, PEOPLES R CHINA
AbstractA gradient nanostructured layer (GNsL) was generated on the two sides of bulk sample in 304L stainless steel by means of the surface mechanical attrition treatment. The microstructure of the GNsL was characterized via TEM observation. The prominent microstructural features involve the intersection of multi-system twin operation, subdividing the original grains into blocks, a martensite transformation mainly occurring at the interface of the twins as well, and the randomly orientated nanocrystallites at the top of surface. After annealing at 750 degrees C for 10 min, recovery had occurred and the dislocation density was much reduced. The vast majority of the grains at the top surface were in the nanocrystalline/ultrafine range, with some recrystallization regions. The uniaxial tensile tests were performed to obtain the mechanical property of bulk samples with GNsL. The yield strength was about 2 times higher than that of the coarse-grained counterpart, but with a decrease in uniform elongation and elongation to failure as well. The relationship between the microstructure and mechanical property was discussed in detail.
KeywordSurface Mechanical Attrition Treatment 304l Stainless Steel Gradient Nanostructured Layer Mechanical Twinning Mechanical Properties
WOS IDWOS:000299234300029
DepartmentLNM材料介观力学性能的表征
Funding OrganizationNanjing Univ Sci & Technol
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Indexed ByCPCI-S ; EI
Language英语
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Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/45249
Collection非线性力学国家重点实验室
Corresponding AuthorJiang, P (reprint author), Chinese Acad Sci, State Key Lab Nonlinear Mech, Inst Mech, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Jiang P,Lu J,Wu XL,et al. Microstructure Evolution and Tensile Properties of 304L Stainless Steel Subjected to Surface Mechanical Attrition Treatment[C]. LAUBLSRUTISTR 24, CH-8717 STAFA-ZURICH, SWITZERLAND:TRANS TECH PUBLICATIONS LTD,2011:175-179.
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