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	SEM in-situ investigation on fatigue cracking behavior of P/M Rene95 alloy with surface inclusions
	Wang, Xishu ; Zhang, Lina ; Zeng, Yanping ; Xie, Xishan
	2010-05-10 ; 2010-05-10
关键词	P/M Rene95 alloy fatigue behavior inclusion powder metallurgy in-situ observation SEM MICROCRACK GROWTH STRENGTH STRESS STEEL TEMPERATURES PARTS Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Mining & Mineral Processing
中文摘要	The low-cycle fatigue behavior of powder metallurgy Rene95 alloy containing surface inclusions was investigated by in-situ observation with scanning electron microscopy (SEM). The process of fatigue crack initiation and early stage of propagation behavior indicates that fatigue crack mainly occurs at the interface between the inclusion and the matrix. The effect of inclusion on the fatigue crack initiation and the early stage of crack growth was very obvious. The fatigue crack growth path in the matrix is similar to the shape of inclusion made on the basis of fatigue fracture image analysis. The empiric relation between the surface and inside crack growth length, near a surface inclusion, can be expressed. Therefore, the fatigue crack growth rate or life of P/M Rene95 alloy including the inclusions can be evaluated on the basis of the measurable surface crack length parameter. In addition, the effect of two inclusions on the fatigue crack initiation behavior was investigated by the in-situ observation with SEM.
语种	英语 ; 英语
出版者	JOURNAL OF UNIV OF SCIENCE AND TECHNOLOGY BEIJING ; BEIJING ; 30 XUEYUANLU, BEIJING 100083, PEOPLES R CHINA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/22532]
专题	清华大学
推荐引用方式 GB/T 7714	Wang, Xishu,Zhang, Lina,Zeng, Yanping,et al. SEM in-situ investigation on fatigue cracking behavior of P/M Rene95 alloy with surface inclusions[J],2010, 2010.
APA	Wang, Xishu,Zhang, Lina,Zeng, Yanping,&Xie, Xishan.(2010).SEM in-situ investigation on fatigue cracking behavior of P/M Rene95 alloy with surface inclusions..
MLA	Wang, Xishu,et al."SEM in-situ investigation on fatigue cracking behavior of P/M Rene95 alloy with surface inclusions".(2010).

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