The Effect of Long-Term Thermal Exposure on the Microstructure and Stress Rupture Property of a Directionally Solidified Ni-Based Superalloy

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	The Effect of Long-Term Thermal Exposure on the Microstructure and Stress Rupture Property of a Directionally Solidified Ni-Based Superalloy
	X. W. Jiang; D. Wang; G. Xie; H. Li; L. H. Lou; J. Zhang
	2014
发表期刊	Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science
ISSN	1073-5623
卷号	45A 期号:13 页码:6016-6026
摘要	Microstructural degradation and microstructure-property relationship during long-term thermal exposure in a directionally solidified Ni-based superalloy are systematically studied. The coarsening kinetics of gamma' precipitation conforms well to the LSW model during the long-term thermal exposure. The detailed time dependence of MC decomposition during the long-term thermal exposure is revealed. Grain boundary coarsening was mainly facilitated by gamma' and M23C6 precipitates coarsening in GBs region, and the GB coarsening kinetics conforms well to the JMAK theory. During different stages of the thermal exposure, dominant factors for the decrease of stress-rupture lifetime vary due to the evolution of multiple microstructures (gamma' coarsening, MC decomposition, and grain boundary coarsening).
部门归属	[jiang, x. w. ; wang, d. ; xie, g. ; li, h. ; lou, l. h. ; zhang, j.] chinese acad sci, inst met res, superalloys div, shenyang 110016, peoples r china. [zhang, j.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. ; jiang, xw (reprint author), chinese acad sci, inst met res, superalloys div, shenyang 110016, peoples r china. ; dwang@imr.ac.cn
关键词	Gas-turbine Blades Creep-properties Aging Kinetics Decomposition Rejuvenation Behavior Gtd-111 Gamma' Alloys
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/73253
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. W. Jiang,D. Wang,G. Xie,et al. The Effect of Long-Term Thermal Exposure on the Microstructure and Stress Rupture Property of a Directionally Solidified Ni-Based Superalloy[J]. Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science,2014,45A(13):6016-6026.
APA	X. W. Jiang,D. Wang,G. Xie,H. Li,L. H. Lou,&J. Zhang.(2014).The Effect of Long-Term Thermal Exposure on the Microstructure and Stress Rupture Property of a Directionally Solidified Ni-Based Superalloy.Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science,45A(13),6016-6026.
MLA	X. W. Jiang,et al."The Effect of Long-Term Thermal Exposure on the Microstructure and Stress Rupture Property of a Directionally Solidified Ni-Based Superalloy".Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science 45A.13(2014):6016-6026.