Effects of Hafnium Content on As-Cast Microstructures of DD6 Single Crystal Superalloy

被引：0

作者：

Shi Zhenxue ^{[1
]}

Li Jiarong ^{[1
]}

Liu Shizhong ^{[1
]}

Luo Yushi ^{[1
]}

Zhao Jinqian ^{[1
]}

机构：

[1] Beijing Inst Aeronaut Mat, Natl Key Lab Adv High Temp Struct Mat, Beijing 100095, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2010年 / 39卷 / 03期

关键词：

Hf; DD6; alloy; single crystal superalloy; as-cast microstructure;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effects of Hf content on the as-cast microstructures were investigated in DD6 single crystal superalloy by OM, SEM and EDS. The results show that with the Hf content increasing, primary dendrite arm spacing increases first and decreases afterwards, and the volume fraction of gamma/gamma' eutectic increases. The size of gamma' phase particles of dendritic core has no obvious change while that of interdendritic decreases a little. Microporosity has no apparent change and extent of elements segregation slightly decreases. There are two kinds of carbides with different color shades in alloys.

引用

页码：490 / 493

页数：4

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