Thermal fatigue crack initiation in K465 superalloy

IMR OpenIR

	Thermal fatigue crack initiation in K465 superalloy
	Yang, JX; Zheng, Q; Sun, XF; Guan, HR; Hu, ZQ
通讯作者	Yang, JX(jxyang@imr.ac.cn)
	2005-11-01
发表期刊	TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
ISSN	1003-6326
卷号	15 页码:71-76
摘要	Thermal fatigue crack initiation of K465 superalloy was studied by optical microscope and scanning electron microscope(SEM). The maximum temperature and its corresponding holding time during thermal fatigue were respectively 950 degrees C for 100 s and 300 s, 1 000 degrees C for 100 s and 1 050 degrees C for 100 s and 300 s. The minimum temperature was 20 degrees C. The data of initiation lives shows that increasing the maximum temperature or holding time at peak temperature decreases, decreases TF crack initiation life and the effect of holding time is more distinct than that of peak temperature. The metallographic observation presents that TF crack initiates at voids aggregation damage zones(VADZs), carbide fracture damage zones(CFDZs). cracked carbide and phases interface. VADZs basically result from creep fatigue interaction deformation whereas CFDZs is mainly induced by oxidation.
关键词	thermal fatigue oxidation creep crack initiation
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:000233494100016
出版者	ALLERTON PRESS INC
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/82492
通讯作者	Yang, JX
作者单位	Chinese Acad Sci, Met Res Inst, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Yang, JX,Zheng, Q,Sun, XF,et al. Thermal fatigue crack initiation in K465 superalloy[J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,2005,15:71-76.
APA	Yang, JX,Zheng, Q,Sun, XF,Guan, HR,&Hu, ZQ.(2005).Thermal fatigue crack initiation in K465 superalloy.TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,15,71-76.
MLA	Yang, JX,et al."Thermal fatigue crack initiation in K465 superalloy".TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA 15(2005):71-76.