STUDY OF PREVIOUS POWDER-PARTICLE BOUNDARY CARBIDES.

被引：0
|
作者：
Li, Huiying [1 ]
Hu, Benfu [1 ]
Zhang, Shouhua [1 ]
机构：
[1] Beijing Univ of Iron & Steel, Technology, Beijing, China, Beijing Univ of Iron & Steel Technology, Beijing, China
来源：
Jinshu Xuebao/Acta Metallurgica Sinica | 1987年 / 23卷 / 02期
关键词：
CARBIDES - METALLOGRAPHY - MICROSCOPIC EXAMINATION - OXYGEN - SUPERALLOYS;
D O I：
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中图分类号：
学科分类号：
摘要：
The previous powder-particle boundary (PPB) problem has been studied in the P/M superalloy FGH95. The results indicate that the PPB carbides begin to form on the powder surface during atomization and continuously precipitate during HIP-consolidation. As a result of the complex composition of carbides, the different types of carbides probably interact. The amount of PPB precipitation increased significantly during the post-HIP heat treatment. The formation of PPB carbides is related to the amount of residual oxygen in the alloy.
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