Effect of Al-Nb Content on Microstructure and Properties of GH706 Alloy for Rotor

被引：0

作者：

Bai Yaguan ^{[1
]}

Nie Yihong ^{[1
]}

Zhu Huaishen ^{[1
]}

Zhao Shuai ^{[1
]}

机构：

[1] Tianjin Heavy Ind Res & Dev Co Ltd, China First Heavy Ind, Tianjin 300457, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2019年 / 48卷 / 04期

关键词：

GH706; long time age; precipitate; mechanical properties; BEHAVIOR;

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 increasing Al content and decreasing Nb content on microstructure and mechanical properties of GH706 alloy before and after long time age heat treat were studied. The results show that increasing Al content and decreasing Nb content in alloy contribute to the disappearing of gamma '', eta, Laves and delta phases in alloy. After aged at 750 degrees C for 500 h, gamma' and eta grow up slightly and the mechanical properties have a limited reducing. While the precipitates of alloy without modification (conventional GH706) grow up rapidly and the mechanical properties decrease obviously. The alloy can be used at higher temperatures with modification of increasing Al content and decreasing Nb content.

引用

页码：1317 / 1324

页数：8

共 21 条

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