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：

暂无

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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