| 晶粒大小及Mg对GH169合金持久与缺口周期持久性能的影响 |
| |
| 引用本文： | 徐志超,屈波,谢锡善,周世武,程秀峰.晶粒大小及Mg对GH169合金持久与缺口周期持久性能的影响[J].北京科技大学学报,1987(4). |
| |
| 作者姓名： | 徐志超 屈波 谢锡善 周世武 程秀峰 |
| |
| 作者单位： | 北京钢铁学院
(徐志超，屈波，谢锡善)，北京钢铁学院大冶钢厂
(周世武)，北京钢铁学院大冶钢厂(程秀峰) |
| |
| 摘 要： | 本文研究了晶粒大小和Mg对GH169合金持久与缺口周期持久性能的影响。结果表明,微量Mg及晶粒细化会有效地改善该合金的缺口持久敏感性。存在缺口持久敏感性或低塑性的GH169台金,在蠕变疲劳交互作用下将会严重导致材料的弱化而引起过早的断裂,用Mg微合金化和晶粒细化,即使存在一定数量小晶的混晶组织也会显著提高合金的缺口周期持久寿命。
|
| 关 键 词： | 晶粒大小 镁 缺口周期持久 |
The Effects of Grain Size and Magnesium Addition on Stress Rupture and Notched Cyclic Stress Rupture Properties of GH_(169) Superalloy |
| |
| Xu Zhichao Qu Bo Xie Xishan Zhou Shiwu Cheng Xiufeng.The Effects of Grain Size and Magnesium Addition on Stress Rupture and Notched Cyclic Stress Rupture Properties of GH_(169) Superalloy[J].Journal of University of Science and Technology Beijing,1987(4). |
| |
| Authors: | Xu Zhichao Qu Bo Xie Xishan Zhou Shiwu Cheng Xiufeng |
| |
| Institution: | Xu Zhichao Qu Bo Xie Xishan Zhou Shiwu Cheng Xiufeng |
| |
| Abstract: | Grain size and magnesium effects on stress rupture and notched cyclic stress rupture properties have been investigated.A minute amount addition of Mg and grain refinement can successfully improve high temperature stress rupture notch sensitivity.The failure lives of iron-nickel base superalloy GH169 with high temperature stress rupture notch sensitivity or low stress rupture ductility decrease dramatically at creep and fati-que interaction conditions. The notched cyclic stress rupture lives are emarkably enhanced by addition microalloying of magnesium and grain refinement even the presence of duplex structure with certain of small grains and large grains. |
| |
| Keywords: | grain size magnesium notched cyclic stress rupture |
| 本文献已被 CNKI 等数据库收录！ |
