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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
Source PublicationMetallurgical and Materials Transactions a-Physical Metallurgy and Materials Science
ISSN1073-5623
Volume45AIssue:13Pages:6016-6026
AbstractMicrostructural 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).
description.department[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
KeywordGas-turbine Blades Creep-properties Aging Kinetics Decomposition Rejuvenation Behavior Gtd-111 Gamma' Alloys
URL查看原文
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/73253
Collection中国科学院金属研究所
Recommended Citation
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.
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