航空用超高强度钢中夹杂物导致疲劳裂纹萌生与扩展的微观行为

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Abstract The microbehavior of inclusion inducing crack initiation and propagation in ultrahigh strength steel MA250 for aerospace application under low cyclic fatigue loading was studied by means of SEM original position observation. The characteristics of low cyclic fatigue crack initiation and propagation were obtained. The method for accurately measuring fatigue crack growth rate in MA250 is discussed.

Key words： ultrahigh strength steel inclusion crack initiation and propagation fracture

Received: 01 January 1900

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	Articles by authors
	FAN Hongmei
	ZENG Yanping
	WANG Xishu
	CUI Zhengqiang
	XIE Xishan

Cite this article:

FAN Hongmei,ZENG Yanping,WANG Xishu等. Study on Inclusion Induced Fatigue Crack Initiation and Propagation in UltraHigh Strength Steel for Aerospace Application[J]. Iron and Steel, 2007, 42(7): 72-0.

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http://www.chinamet.cn/Jweb_gt/EN/ OR http://www.chinamet.cn/Jweb_gt/EN/Y2007/V42/I7/72

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