Effect of Heat Treatment on Microstructure and Mechanical Properties of GH4169 Superalloy

被引：41
作者：
Du Jinhui [1 ]
Lu Xudong [1 ]
Deng Qun [1 ]
机构：
[1] Cent Iron & Steel Res Inst, Beijing 100081, Peoples R China
来源：
RARE METAL MATERIALS AND ENGINEERING | 2014年 / 43卷 / 08期
关键词：
superalloy; heat treatment; mechanical properties; microstructure; DEFORMATION-BEHAVIOR; DELTA-PHASE; PRECIPITATION; ALLOY; CREEP;
D O I：
10.1016/S1875-5372(14)60140-5
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effects of the solution and aging treatment on the microstructure, the tensile properties at room-temperature and 650 degrees C and the stress rupture of GH4169 superalloy were investigated. The results show that after solution at 980 degrees C and aging at 720 degrees C plus 620 degrees C, both the yield strength and ultimate strength of the superalloy at room-temperature and 650 degrees C are highest; after solution at 960 degrees C and aging at 720 degrees C plus 620 degrees C, the stress rupture life of the superalloy tested at 650 degrees C and 725 MPa is the longest; the solution treatment can adjust the amount of delta phase, primary strengthening gamma '' phase precipitates upon aging at 720 degrees C, while assistant strengthening gamma' phase precipitates at 620 degrees C.
引用
收藏
页码：1830 / 1834
页数：5
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