Behavior of short fatigue cracks initiated from a notch in 8090 Al-Li alloy

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	Behavior of short fatigue cracks initiated from a notch in 8090 Al-Li alloy
	Z. G. Wang ; Z. H. Shan ; Y. Zhang
刊名	Materials Science
	1995
卷号	31 期号:1 页码:32-38
关键词	growth
ISSN号	1068-820X
中文摘要	The rates of growth of short fatigue cracks initiated from a notch are much greater than the rates of growth of long fatigue cracks for the same values of Delta K. A decrease in the strength of materials caused by aging affects the behavior of long cracks. The geometric form of the notch strongly affects the behavior of short cracks. The growth rate of a short crack initiated from a sharp notch decreases and attains a minimum value at a length of 0.45 mm, which is far beyond the region of its influence. However, short cracks initiated from blunt notches exhibit slower growth in the region of stress concentration than outside this region. Strain fields induced by deformation of the tip of the notch are not the only factor inhibiting the propagation of short cracks from notches. To explain the behavior of a short crack initiated at a notch, one must take into account some other factors, in particular, crack closure.
原文出处	://WOS:A1995VK13300004
公开日期	2012-04-14
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/38702]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. G. Wang,Z. H. Shan,Y. Zhang. Behavior of short fatigue cracks initiated from a notch in 8090 Al-Li alloy[J]. Materials Science,1995,31(1):32-38.
APA	Z. G. Wang,Z. H. Shan,&Y. Zhang.(1995).Behavior of short fatigue cracks initiated from a notch in 8090 Al-Li alloy.Materials Science,31(1),32-38.
MLA	Z. G. Wang,et al."Behavior of short fatigue cracks initiated from a notch in 8090 Al-Li alloy".Materials Science 31.1(1995):32-38.