| 预应力对GH33A合金低周疲劳及裂纹扩展性能的影响 |
| |
| 引用本文： | 刘绍伦,谢济洲,刘湘生.预应力对GH33A合金低周疲劳及裂纹扩展性能的影响[J].航空学报,1987,8(5):267-273. |
| |
| 作者姓名： | 刘绍伦 谢济洲 刘湘生 |
| |
| 作者单位： | 航空材料研究所
(刘绍伦，谢济洲)，航空发动机研究所(刘湘生) |
| |
| 摘 要： | 研究了预拉伸应力对航空发动机涡轮盘材料GH33A镍基高温合金在360℃下的低周疲劳及其对裂纹扩展速率的影响。结果表明在10~4～5×10~4低周疲劳寿命范围内,预应力处理将使单边缺口试样的疲劳裂纹起始寿命N,有明显提高,对其裂纹扩展寿命N_p的影响则并不显著。
|
| 关 键 词： | |
| 收稿时间： | 1986-08-25; |
THE EFFECTS OF PRESTRESS ON LOW CYCLE FATIGUE AND FATIGUE CRACK GROWTH BEHAVIOURS FOR ALLOY GH33A |
| |
| Liu Shaolun,Xie Jizhou,Liu Xiangsheng.THE EFFECTS OF PRESTRESS ON LOW CYCLE FATIGUE AND FATIGUE CRACK GROWTH BEHAVIOURS FOR ALLOY GH33A[J].Acta Aeronautica et Astronautica Sinica,1987,8(5):267-273. |
| |
| Authors: | Liu Shaolun Xie Jizhou Liu Xiangsheng |
| |
| Institution: | 1. Institute of Aeronautical Materials, Beijing;2. Institute of Aeronautical Engines |
| |
| Abstract: | The effects of tensile prestress on low-cycle fatigue and fatigue crack growth rates for Ni-base alloy GH33A used to turbine engine disks were investigated at 360℃. The experimental results show that the low-cycle fatigue crack initiation life Ni will be increased by prestressing treatment within the range of low-cycle fatigue life 104~ 5×104, but the effect of prestress on fatigue crack propagation life Np is not obvious, |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《航空学报》浏览原始摘要信息 |
| 点击此处可从《航空学报》下载免费的PDF全文 |
