| 相位角对定向合金DZ125热/机械疲劳行为与寿命影响的试验研究 |
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| 引用本文： | 张国栋,刘绍伦,何玉怀,陈荣章,周柏卓.相位角对定向合金DZ125热/机械疲劳行为与寿命影响的试验研究[J].航空动力学报,2003,18(3):383-387. |
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| 作者姓名： | 张国栋 刘绍伦 何玉怀 陈荣章 周柏卓 |
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| 作者单位： | 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 |
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| 基金项目： | “九五”航空发动机结构强度国防预研项目(28.4) |
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| 摘 要： | 对DZ125定向凝固铸造镍基高温合金进行了同相位、反相位和-135°相位的550℃～1000℃热/机械疲劳试验研究。试验结果表明:同相位寿命曲线与反相位寿命曲线有一交点,-135°相位的热/机械疲劳寿命比同相位热/机械疲劳寿命与反相位热/机械疲劳寿命长。试样的微观断口分析显示了在热/机械疲劳试验中同时存在疲劳、蠕变和氧化损伤。对同相位、反相位和-135°相位热/机械疲劳循环应力响应行为进行了研究。用Manson-Coffin方程、微裂纹扩展模型和拉伸迟滞能(Ostergren)寿命预测模型对DZ125合金的热/机械疲劳寿命进行了预测(分散带为2倍左右)。
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| 关 键 词： | 航空、航天推进系统 同相位 反相位 —135°相位 预测 |
| 文章编号： | 1000-8055(2003)03-0383-05 |
| 收稿时间： | 5/9/2002 12:00:00 AM |
| 修稿时间： | 2002年5月9日 |
The Effects of Phase Angle on Thermomechanical Fatigue Behavior and Life in DS Superalloy DZ125 |
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| ZHANG Guo-dong,LIU Shao-lun,HE Yu-huai,CHEN Rong-zhang and ZHOU Bai-zhuo.The Effects of Phase Angle on Thermomechanical Fatigue Behavior and Life in DS Superalloy DZ125[J].Journal of Aerospace Power,2003,18(3):383-387. |
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| Authors: | ZHANG Guo-dong LIU Shao-lun HE Yu-huai CHEN Rong-zhang and ZHOU Bai-zhuo |
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| Institution: | Beijing Institute of Aeronautical Materials,Beijing 100083,China;Beijing Institute of Aeronautical Materials,Beijing 100083,China;Beijing Institute of Aeronautical Materials,Beijing 100083,China;Beijing Institute of Aeronautical Materials,Beijing 100083,China;Shenyang Aeroengine Research Institute,Shenyang 100095,China |
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| Abstract: | Three types of test (in-phase,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. |
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