High temperature fatigue behavior of wrought nickel-base superalloy GH4049

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	High temperature fatigue behavior of wrought nickel-base superalloy GH4049
	Z. G. Wang; L. J. Chen; J. F. Tian; G. Yao
	1999
发表期刊	Metals and Materials-Korea
ISSN	1225-9438
卷号	5 期号:6 页码:597-612
摘要	Push-pull total strain-controlled fatigue tests without and with a hold period were carried at elevated temperatures for wrought nickel base superalloy GH4049. The influence of the testing temperature and strain hold period on fatigue behavior was determined. The allay would exhibit either cyclic strain hardening, softening or stability during cyclic straining. Fatigue life depends strongly on the testing temperature and the introduction of the strain hold period. Observations on fatigue specimens using transmission electron microscopy (TEM) showed that the dislocations were distributed mostly in the gamma matrix. It was observed by scanning electron microscopy (SEM) that cracks initiated always in a transgranular mode, but their propagation mode was closely related to the testing temperature. In addition, the fatigue lift was predicted by linear damage summation (LDS), strain range partitioning (SRP) and the strain energy partitioning (SEP) method. The results of life prediction indicated that the SRP and SEP methods were in a good agreement as to the measured and predicted life at lower temperatures, while the LDS method showed better predictability at higher temperature as compared to the SRP and SEP methods.
部门归属	chinese acad sci, inst met res, state key lab fat & fracture mat, shenyang 110015, peoples r china.;wang, zg (reprint author), chinese acad sci, inst met res, state key lab fat & fracture mat, shenyang 110015, peoples r china
关键词	Nickel-base Superalloy High Temperature Fatigue Strain Hold Crack Initiation And Propagation Life Prediction Low-cycle-fatigue Nimonic Pe-16 Superalloy Elevated-temperature Damage Alloy Fracture Prediction Mechanisms
URL	查看原文
WOS记录号	WOS:000084578300017
引用统计	被引频次：11[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/321006/37528
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. G. Wang,L. J. Chen,J. F. Tian,et al. High temperature fatigue behavior of wrought nickel-base superalloy GH4049[J]. Metals and Materials-Korea,1999,5(6):597-612.
APA	Z. G. Wang,L. J. Chen,J. F. Tian,&G. Yao.(1999).High temperature fatigue behavior of wrought nickel-base superalloy GH4049.Metals and Materials-Korea,5(6),597-612.
MLA	Z. G. Wang,et al."High temperature fatigue behavior of wrought nickel-base superalloy GH4049".Metals and Materials-Korea 5.6(1999):597-612.