摘要
压力破裂上的公司， W 和 Ti 的影响 aNi-Cr-AI-Mo-Ta-Co-W-Ti 单身者水晶镍底生活超级合金用 L_9 (~) 被调查了由统计分析的直角的数组设计(OAD ) 。在一个选择作文范围， Ti 内容是到压力破裂生活的效果的最重要的因素然后由 Cocontent 列在后面。W 内容在压力破裂生命上有最小的效果。最佳的合金 contain10 wt 应该爱抚公司， 8 wt 宠物 W 和零 Ti。优化合金也为 500 h 在 870 deg C 在热暴露期间有好微结构稳定性。
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.
基金
This work was supported by the National Natural Science Foundation of China under grand No.50474058.
关键词
单晶超耐热合金
镍合金
正交设计
应力裂变
钴
钨
Nickel-base single crystal superalloy
Orthogonal array design
Stress-rupture
