保持时间对涡轮盘合金高温低周疲劳裂纹扩展特性的影响

EFFECT OF HOLD TIME ONLOW CYCLE FATIGUE CRACK GROWTH BEHAVIOR AT HIGH TEMPERATURE IN TWO TURBINE DISK ALLOYS

研究了两种广泛使用的涡轮盘高温合金，在高温下带和不带上峰值保持时间的低周疲劳裂纹扩展特性及其扩展寿命估算模型。

The low cycle fatigue crack growth behaviors with and without hold time on upon peak load and itspropagation life prediction model were investigated for two turbine disk superalloys used extensively.