Effect of Solution Treatment on Creep Rupture Properties After Long-Term Aging of Nickel-Based Single Crystal Superalloy

被引：0
|
作者：
Wang, Nan [1 ,2 ]
Liu, Jide [2 ]
Zhu, Chongwei [2 ]
Zhang, Zhipeng [2 ]
Xu, Wei [1 ]
Li, Jinguo [2 ]
机构：
[1] Northeastern Univ, State Key Lab Rolling & Automat, Shenyang 110016, Peoples R China
[2] Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China
来源：
RARE METAL MATERIALS AND ENGINEERING | 2024年 / 53卷 / 11期
关键词：
nickel-based single crystal superalloy; long-time aging; heat treatment regime; microstructure; durational properties; HEAT-TREATMENT; TEMPERATURE; STRENGTH;
D O I：
10.12442/j.issn.1002-185X.20230532
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effects of solution time and long-term aging on microstructure evolution and mechanical properties of a traditional nickel-based single crystal superalloy under different heat treatment conditions were studied. The results demonstrate that the best heat treatment regime is 1310 degrees C/4 h (AC)+1130 degrees C/4 h (AC)+899 degrees C/16 h (AC). After the solution treatment, the precipitation of adverse phase of TCP has been avoided and thus the preferable microstructure is obtained with small size and high degree of cubic of strengthening gamma ' phase. The difference in creep rupture life and elongation is slight under different heat treatment regimes. During the deformation, the brittle TCP phase is broken first, demonstrating that it is not the crack initiation. However, the weak carbide/matrix interface in inter-dendrites is the source of cracks.
引用
收藏
页码：3129 / 3135
页数：7
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