Shot peening induced strengthening of the surface layer of martensite stainless steel 0Cr13Ni4Mo

IMR OpenIR

	Shot peening induced strengthening of the surface layer of martensite stainless steel 0Cr13Ni4Mo
	Ma, SY ; Chen, R ; He, XC ; Li, JB ; Hao, XZ
通讯作者	Li, JB()
	2005
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	41 期号:1 页码:28-32
摘要	A low carbon martensite stainless steel 0Cr13Ni4Mo normalized at 1000 degreesC and tempered at 600 degreesC, used in the guide stream assemblies of water turbine, was treated with shot peening. The depth distributions of microhardness, half width value of X-ray diffraction profiles and yield strength in the shot-peening affected layer were measured. Correspondingly, the depth distributions of microstructure parameters, such as subgrain size, microstrain and dislocation density, in this layer were calculated. The experimental results indicate that the structure strengthening charactered by microhardness and yield strength is prominent. The subgrain size decreases, and the microstrain and dislocation density increase in the shot-peening affected layer, which results in the increase of the microhardness and yield strength. The ratios of microhardness to proof stress are all about 3.37 in different depths of the affected layer. The relation of the half-width value, H-w, and microhardness, HV, in the layer is linear, which is composed of two beelines: if HV less than or equal to 2835 MPa, H-w = 2.07 x 10(-3) x HV-3.47, and if HV > 2835 MPa, H-w = 1.14 x 10(-3) HV-0.81. The relation of the proof stress, sigma(0.2)(s), and square root of dislocation density, rho1/2 in the layer is also linear: sigma(0.2)(s) = 551 + 16.2 x 10(-4) rho(1/2).
关键词	martensite stainless steel shot peening affected layer structure strengthening yield strength dislocation density
收录类别	SCI
语种	英语
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000227020500006
出版者	SCIENCE CHINA PRESS
引用统计	被引频次：8[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/321006/83236
专题	中国科学院金属研究所
通讯作者	Li, JB
作者单位	1.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Met Res Inst, Shenyang 110016, Peoples R China 2.Inst Casting Res, Shenyang 110021, Peoples R China
推荐引用方式 GB/T 7714	Ma, SY,Chen, R,He, XC,et al. Shot peening induced strengthening of the surface layer of martensite stainless steel 0Cr13Ni4Mo[J]. ACTA METALLURGICA SINICA,2005,41(1):28-32.
APA	Ma, SY,Chen, R,He, XC,Li, JB,&Hao, XZ.(2005).Shot peening induced strengthening of the surface layer of martensite stainless steel 0Cr13Ni4Mo.ACTA METALLURGICA SINICA,41(1),28-32.
MLA	Ma, SY,et al."Shot peening induced strengthening of the surface layer of martensite stainless steel 0Cr13Ni4Mo".ACTA METALLURGICA SINICA 41.1(2005):28-32.