Effect of orientation on low cyclic fatigue of a directionally solidified superalloy at elevated temperature
Low cycle fatigue behaviors of a directionally solidified superalloy DZ125 with different orientations was investigated at high temperatures of 760℃ and 980 ℃.It is found that test temperature has different influences on low cycle fatigue life of the alloy with different orientations.The fatigue strength at 760℃ is much greater than that at 980℃ for 0° specimens,while the specimens at 980℃ can withstand more cycles compared to 760℃.There are at least two competing mechanism contributing to the fatigue resistance with respect to the different orientation.These mechanisms are comparable in the middle of the deviation angle range near 45°.
Low Cyclic Fatigue Directionally solidified superalloy Microstructure
Ying Li Huichen Yu Guodong Zhang
Beijing Institute of Aeronautical Materials,Beijing 100095,China
国际会议
成都
英文
265-268
2009-10-16（万方平台首次上网日期，不代表论文的发表时间）