Microstructure Evolution and Tensile Properties of 304L Stainless Steel Subjected to Surface Mechanical Attrition Treatment

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	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)
	2011
会议名称	5th International Conference on Nanomaterials by Severe Plastic Deformation
会议日期	MAR 21-25, 2011
通讯作者邮箱	jping@imech.ac.cn; mmmelu@inet.polyu.edu.hk; xlwu@imech.ac.cn
会议地点	Nanjing, PEOPLES R CHINA
关键词	Surface mechanical attrition treatment 304L stainless steel gradient nanostructured layer mechanical twinning mechanical properties
卷号	667-669
页码	175-179
通讯作者	Jiang, P (reprint author), Chinese Acad Sci, State Key Lab Nonlinear Mech, Inst Mech, Beijing 100190, Peoples R China
中文摘要	A 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.
收录类别	CPCI-S ; EI
产权排序	Chinese Acad Sci, State Key Lab Nonlinear Mech, Inst Mech, Beijing 100190, Peoples R China
会议主办者	Nanjing Univ Sci & Technol
会议网址	http://dx.doi.org/10.4028/www.scientific.net/MSF.667-669.175
会议录	NANOMATERIALS BY SEVERE PLASTIC DEFORMATION: NANOSPD5, PTS 1 AND 2
会议录出版者	TRANS TECH PUBLICATIONS LTD
会议录出版地	LAUBLSRUTISTR 24, CH-8717 STAFA-ZURICH, SWITZERLAND
学科主题	Materials Science, Multidisciplinary
语种	英语
ISSN号	0255-5476
WOS记录号	WOS:000299234300029
内容类型	会议论文
源URL	[http://dspace.imech.ac.cn/handle/311007/45249]
专题	力学研究所_非线性力学国家重点实验室
推荐引用方式 GB/T 7714	Jiang P,Lu J,Wu XL. Microstructure Evolution and Tensile Properties of 304L Stainless Steel Subjected to Surface Mechanical Attrition Treatment[C]. 见:5th International Conference on Nanomaterials by Severe Plastic Deformation. Nanjing, PEOPLES R CHINA. MAR 21-25, 2011.http://dx.doi.org/10.4028/www.scientific.net/MSF.667-669.175.