Effect of heat treatment on microstructure and mechanical properties of the hot-isostatic-pressed Inconel 718 powder compact

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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
发表期刊	Journal of Alloys and Compounds
ISSN	0925-8388
卷号	590 页码:227-232
摘要	The 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.
部门归属	[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
关键词	Superalloy Inconel 718 Hot Isostatic Pressing Heat Treatment Gamma '' Precipitation Ductility Superalloy Inconel-718 Precipitation Alloy
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/321006/72475
专题	中国科学院金属研究所
推荐引用方式 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.