Effect of Heat Treatment on the Microstructure and Mechanical Properties of the Modified 718 Alloy

doi:10.1007/s40195-018-0790-9

IMR OpenIR

	Effect of Heat Treatment on the Microstructure and Mechanical Properties of the Modified 718 Alloy
	Han, Da-Wei 1; Yu, Lian-Xu 2; Liu, Fang 3; Zhang, Bin 1; Sun, Wen-Ru 3
通讯作者	Sun, Wen-Ru(wrsun@imr.ac.cn)
	2018-11-01
发表期刊	ACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN	1006-7191
卷号	31 期号:11 页码:1224-1232
摘要	M718 alloy with an extra high Mo content of 7.50wt% which reduced Nb addition and increased Al and Ti additions within the composition specifications of 718 alloy has been designed to increase the service temperature of 718 alloy. And the effect of the heat treatment on the microstructure and mechanical properties of M718 alloy has been investigated in this study. The results showed that Laves phase precipitated on the grain boundaries of M718 alloy instead of -Ni3Nb phase in 718 alloy, and and phases precipitated in the matrix of M718 alloy as that in 718 alloy. Increasing the solution temperature from 960 to 1050 degrees C noticeably reduced the intergranular precipitation of Laves phase. The precipitation of Laves phase was appropriate at 1020 degrees C for improving the grain boundary cohesion. Increasing the two-stage aging temperatures markedly increased the sizes of and phases. As a result, the strength of M718 alloy increased.
关键词	Heat treatment Mo 718 alloy Microstructure Mechanical properties
DOI	10.1007/s40195-018-0790-9
收录类别	SCI
语种	英语
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000444031000010
出版者	CHINESE ACAD SCIENCES, INST METAL RESEARCH
引用统计	被引频次：16[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/321006/129389
专题	中国科学院金属研究所
通讯作者	Sun, Wen-Ru
作者单位	1.Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Liaoning, Peoples R China 2.Chongqing Skyrizon Aeroengine Co Ltd, Chongqing 401135, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Han, Da-Wei,Yu, Lian-Xu,Liu, Fang,et al. Effect of Heat Treatment on the Microstructure and Mechanical Properties of the Modified 718 Alloy[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2018,31(11):1224-1232.
APA	Han, Da-Wei,Yu, Lian-Xu,Liu, Fang,Zhang, Bin,&Sun, Wen-Ru.(2018).Effect of Heat Treatment on the Microstructure and Mechanical Properties of the Modified 718 Alloy.ACTA METALLURGICA SINICA-ENGLISH LETTERS,31(11),1224-1232.
MLA	Han, Da-Wei,et al."Effect of Heat Treatment on the Microstructure and Mechanical Properties of the Modified 718 Alloy".ACTA METALLURGICA SINICA-ENGLISH LETTERS 31.11(2018):1224-1232.