The turning point in Paris region of fatigue crack growth rate in titanium alloy

IMR OpenIR

	The turning point in Paris region of fatigue crack growth rate in titanium alloy
	Ma Yingjie; Liu Jianrong; Lei Jiafeng; Li Yulan; Liu Luyin; Yang Rui
通讯作者	Lei Jiafeng(jflei@imr.ac.cn)
	2008-08-01
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	44 期号:8 页码:973-978
摘要	The turning point in Paris region of fatigue crack growth rate has been investigated with TC4 lamellar microstructure. Positions of turning point Delta K-t under different microstructure dimensions have been compared, showing that beta grain size is the most important parameter to affect Delta K-t.This phenomenon is explained by analyzing the fracture features of different propagating stages, and result indicates that the appearance of turning point is induced by cracke tip plastic zone (CTPZ) growing larger than beta grain. No turning point appearing in fatigue crack growth rate curve of martensite structure reflects that beta grain is not the single reason to induce the turning point. Finally the real dimension of CTPZ is discussed in contrast to the calculated one.
关键词	titanium alloy fatigue crack growth turning point in Paris region CTPZ size
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:000258786500015
出版者	SCIENCE CHINA PRESS
引用统计	被引频次：10[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/321006/95025
专题	中国科学院金属研究所
通讯作者	Lei Jiafeng
作者单位	Chinese Acad Sci, Titanium Alloy Lab, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Ma Yingjie,Liu Jianrong,Lei Jiafeng,et al. The turning point in Paris region of fatigue crack growth rate in titanium alloy[J]. ACTA METALLURGICA SINICA,2008,44(8):973-978.
APA	Ma Yingjie,Liu Jianrong,Lei Jiafeng,Li Yulan,Liu Luyin,&Yang Rui.(2008).The turning point in Paris region of fatigue crack growth rate in titanium alloy.ACTA METALLURGICA SINICA,44(8),973-978.
MLA	Ma Yingjie,et al."The turning point in Paris region of fatigue crack growth rate in titanium alloy".ACTA METALLURGICA SINICA 44.8(2008):973-978.