The Effects of Phase Angle on Thermomechanical Fatigue Behavior and Life in DS Superalloy DZ125
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The Effects of Phase Angle on Thermomechanical Fatigue Behavior and Life in DS Superalloy DZ125
Vol. 18, Issue 3, (2003)
作者机构:
1. 北京航空材料研究院,北京,100095
2. 沈阳航空发动机设计研究所,沈阳,110500
作者简介:
基金信息:
DOI:
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Published:2003
稿件说明:
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ZHANG Guo-dong, LIU Shao-lun, HE Yu-huai, et al. The Effects of Phase Angle on Thermomechanical Fatigue Behavior and Life in DS Superalloy DZ125[J]. 2003, 18(3).
DOI:
ZHANG Guo-dong, LIU Shao-lun, HE Yu-huai, et al. The Effects of Phase Angle on Thermomechanical Fatigue Behavior and Life in DS Superalloy DZ125[J]. 2003, 18(3).DOI:
The Effects of Phase Angle on Thermomechanical Fatigue Behavior and Life in DS Superalloy DZ125
out-of-phase and-135 ° phase angle) were performed in directional solidification superalloy DZ125
with temperature cycling from 550'C to 1000 C. The results of experiment showed that DS superalloy DZ125 exhibited a crossover point of the in-phase and out-of-phase mechanical strain-life curves
- 135° phase angle lives were longer than that of in-phase and out-of-phase thermomechanical fatigue. Besides fatigue damage
creep damage and oxidation damage exist in thermal-mechanical fatigue. The effect of phase angle on TMF cyclic stress-strain response in DS superalloy DZ125 was investigated. Manson-Coffin e-quation
Ostergren method and microcrack propagation model were chosen to predict TMF life. The results of TMF life prediction showed that all of methods chosen were able to give a reasonable life prediction for DS superalloy DZ125.