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

被引：1
|
作者：
Dayun YANG
机构：
来源：
Journal of Materials Science & 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：
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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