Effect of grain size on slow fatigue crack propagation and plastic deformation near crack tip

doi:10.1016/0167-8442(87)90057-7

IMECH-IR > 力学所知识产出(1956-2008)

	Effect of grain size on slow fatigue crack propagation and plastic deformation near crack tip
	Deng RY(邓蓉英); Yu G(俞刚); Li H
发表期刊	Theoretical and Applied Fracture Mechanics
	1987
卷号	7 期号:1 页码:37-40
ISSN	0167-8442
摘要	Fatigue crack growth and its threshold are investigated at a stress ratio of 0.5 for the three-point bend specimen made of Austenitic stainless steel. The effect of grain size on the crack tip plastic deformation is investigated. The results show that the threshold value Δkth increases linearly with the square root of grain size d and the growth rate is slower for materials with larger grain size. The plastic zone size and ratio for different grain sizes are different at the threshold. The maximum stress intensity factor is kmax and σys is the yield strength. At the same time, the characteristics of the plastic deformation development is discontinuous and anti-symmetric as the growth rate is increased from 2·10—8 to 10−7 mm/cycle.
DOI	10.1016/0167-8442(87)90057-7
URL	查看原文
收录类别	SCI
语种	英语
WOS记录号	WOS:A1987G375600006
WOS研究方向	Engineering ; Mechanics
WOS类目	Engineering, Mechanical ; Mechanics
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://dspace.imech.ac.cn/handle/311007/39740
专题	力学所知识产出(1956-2008)
推荐引用方式 GB/T 7714	Deng RY,Yu G,Li H. Effect of grain size on slow fatigue crack propagation and plastic deformation near crack tip[J]. Theoretical and Applied Fracture Mechanics,1987,7,1,:37-40.
APA	Deng RY,Yu G,&Li H.(1987).Effect of grain size on slow fatigue crack propagation and plastic deformation near crack tip.Theoretical and Applied Fracture Mechanics,7(1),37-40.
MLA	Deng RY,et al."Effect of grain size on slow fatigue crack propagation and plastic deformation near crack tip".Theoretical and Applied Fracture Mechanics 7.1(1987):37-40.

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