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Effect of heat treatment on microstructure and mechanical properties of the hot-isostatic-pressed Inconel 718 powder compact
L. T. Chang; W. R. Sun; Y. Y. Cui; F. Q. Zhang; R. Yang
2014
Source PublicationJournal of Alloys and Compounds
ISSN0925-8388
Volume590Pages:227-232
AbstractThe present study deals with the optimization of the mechanical properties of the hot-isostatic-pressed Inconel 718 powder compact. Several heat treatments, including the solution plus aging with different solution temperature and the direct aging scheme, have been designed based on the phase relations of Inconel 718 and been employed for the optimization. The results indicate that the direct aging heat treatment is the best one, because it ensures a good balance of the strength and ductility of the powder compact. The tensile and stress rupture properties of the direct aged alloy have all met the specifications for Inconel 718. Solution process leads to a decrease of grain boundary strength and poor ductility because of the precipitation of carbide and delta phase at the prior particle boundaries or formation of thermal induced porosities at the triple junctions, and is then not appropriate for the powder compact. Yield strength of the direct aged alloy is a little lower than the solution treated alloy because of over aging of the gamma" precipitates. Crown Copyright (C) 2013 Published by Elsevier B.V. All rights reserved.
description.department[chang, litao ; sun, wenru ; cui, yuyou ; yang, rui] chinese acad sci, inst met res, shenyang 110016, peoples r china. [chang, litao ; zhang, faqiang] univ chinese acad sci, beijing 100049, peoples r china. [zhang, faqiang] chinese acad sci, shanghai inst ceram, shanghai 200050, peoples r china. ; yang, r (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china. ; ryang@imr.ac.cn
KeywordSuperalloy Inconel 718 Hot Isostatic Pressing Heat Treatment Gamma '' Precipitation Ductility Superalloy Inconel-718 Precipitation Alloy
URL查看原文
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/72475
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
L. T. Chang,W. R. Sun,Y. Y. Cui,et al. Effect of heat treatment on microstructure and mechanical properties of the hot-isostatic-pressed Inconel 718 powder compact[J]. Journal of Alloys and Compounds,2014,590:227-232.
APA L. T. Chang,W. R. Sun,Y. Y. Cui,F. Q. Zhang,&R. Yang.(2014).Effect of heat treatment on microstructure and mechanical properties of the hot-isostatic-pressed Inconel 718 powder compact.Journal of Alloys and Compounds,590,227-232.
MLA L. T. Chang,et al."Effect of heat treatment on microstructure and mechanical properties of the hot-isostatic-pressed Inconel 718 powder compact".Journal of Alloys and Compounds 590(2014):227-232.
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