Effect of stress ratio on HCF and VHCF properties at temperatures of 20 °C and 700 °C for nickel-based wrought superalloy GH3617M

被引：0
作者：
Aoshuang WAN [1 ]
Junjiang XIONG [1 ]
机构：
[1] School of Transportation Science and Engineering, Beihang University
来源：
Chinese Journal of Aeronautics | 2019年 / 09期
基金：
中国国家自然科学基金;
关键词：
High cycle fatigue; High-temperature; Nickel-based superalloy; Stress ratio; Very high cycle fatigue;
D O I：
暂无
中图分类号：
V252 [金属材料];
学科分类号：
0805 ; 080502 ;
摘要：
This paper attempts to investigate the effects of stress ratio and high temperature on the HCF(high-cycle-fatigue) and VHCF(very-high-cycle-fatigue) behaviors of nickel-based wrought superalloy GH3617 M. Fatigue tests over the full HCF and VHCF regimes were conducted on superalloy GH3617 M subjected to constant-amplitude loading at five stress ratios of -1, -0.5, 0,0.4, and 0.8 in environments of 20 °C and 700 °C temperatures. From experimental observation and fractographic analysis, fatigue mechanisms were deduced to reveal the synergistic interaction between high temperature and stress ratio on the HCF and VHCF behaviors of superalloy GH3617 M. A phenomenological model was crafted from available fatigue design knowledge to evaluate the synergistic interaction, and a good correlation between predictions and experiments has been achieved.
引用
收藏
页码：2199 / 2210
页数：12
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