Effect of heat treatment on microstructure and mechanical properties of GH4169 superalloy

被引：0
|
作者：
Du, Jinhui [1 ]
Lü, Xudong [1 ]
Deng, Qun [1 ]
机构：
[1] Department of Superalloy, Central Iron and Steel Research Institute, Beijing,100081, China
来源：
Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering | 2014年 / 43卷 / 08期
关键词：
Aging treatment - Effect of heat treatments - Microstructure and mechanical properties - Phase precipitate - Solution treatments - Stress rupture - Stress-rupture lives - Ultimate strength;
D O I：
10.1016/s1875-5372(14)60140-5
中图分类号：
学科分类号：
摘要：
The effects of the solution and aging treatment on the microstructure, the tensile properties at room-temperature and 650 ℃ and the stress rupture of GH4169 superalloy were investigated. The results show that after solution at 980 ℃ and aging at 720 ℃ plus 620 ℃, both the yield strength and ultimate strength of the superalloy at room-temperature and 650 ℃ are highest; after solution at 960 ℃ and aging at 720 ℃ plus 620 ℃, the stress rupture life of the superalloy tested at 650 ℃ and 725 MPa is the longest; the solution treatment can adjust the amount of δ phase, primary strengthening γ phase precipitates upon aging at 720 ℃, while assistant strengthening γ' phase precipitates at 620 ℃. Copyright © 2014, Northwest Institute for Nonferrous Metal Research. Published by Elsevier BV. All rights reserved.
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页码：1830 / 1834
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