Influence of Co, W and Ti on the Stress-rupture Lives of a Single Crystal Nickel-base Superalloy

被引：0
作者：
Dayun YANG Tao JIN Nairen ZHAO Zhihui WANG Xiaofeng SUN Hengrong GUAN and Zhuangqi HU Department of Superalloy Institute of Metal Research Chinese Academy of Sciences Shenyang China [110016 ]
机构：
来源：
JournalofMaterialsScience&Technology | 2006年 / 02期
关键词：
Nickel-base single crystal superalloy; Orthogonal array design; Stress-rupture;
D O I：
暂无
中图分类号：
TG132.33 [];
学科分类号：
080502 ;
摘要：
<正>The influence of Co, W and Ti on stress-rupture lives of a Ni-Cr-AI-Mo-Ta-Co-W-Ti single crystal nickel-base superalloy has been investigated using a L9 (34) orthogonal array design (OAD) by statistical analysis. At a selected composition range, Ti content was the most important factor to the effect of the stress-rupture lives and then followed by Co content. W content had the minimum effect on stress-rupture lives. The optimal alloy should contain 10 wt pct Co, 8 wt pct W and zero Ti. The optimized alloy also had good microstructural stability during thermal exposure at 870℃ for 500 h.
引用
收藏
页码：169 / 172
页数：4
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