Precipitation of Ft Phase in Nickel-based Powder Metallurgy Superalloy FGH97

被引：9
|
作者：
Tan, Li-ming [1 ,2 ]
Zhang, Yi-wen [1 ,2 ]
Jia, Jian [1 ,2 ]
Han, Shou-bo [1 ,2 ]
机构：
[1] Cent Iron & Steel Res Inst, High Temp Mat Inst, Beijing 100081, Peoples R China
[2] Beijing Key Lab Adv High Temp Mat, Beijing 100081, Peoples R China
来源：
JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL | 2016年 / 23卷 / 08期
关键词：
powder metallurgy superalloy; FGH97; solution strengthening; mu phase; average electron vacancy number; NI-BASED SUPERALLOYS; MU-PHASE; TCP PHASE; RE; BEHAVIOR; EVOLUTION;
D O I：
10.1016/S1006-706X(16)30130-3
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The precipitation behavior of topological close-packed (TCP) mu phase in powder metallurgy (P/M) nickel-based superalloy FGH97 was investigated. The results showed that proper addition of solution strengthening elements, such as Co, Cr, W, Mo, improved tensile strength, while excessive addition of those elements facilitated the precipitation of mu phase, which seriously aggravated the plasticity of the P/M superalloy. For the heat-treated specimens, the relationship between critical aging time (when mu started to precipitate) aging temperature, and the average electron vacancy number of gamma matrix was established.
引用
收藏
页码：851 / 856
页数：6
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