| Ti60钛合金中富钕稀土相颗粒对叶片室温振动疲劳性能的影响 |
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| 引用本文： | 蔡建明,李臻熙,曹春晓,黄旭,雷强,张元伟.Ti60钛合金中富钕稀土相颗粒对叶片室温振动疲劳性能的影响[J].材料工程,2007(8):57-60. |
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| 作者姓名： | 蔡建明 李臻熙 曹春晓 黄旭 雷强 张元伟 |
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| 作者单位： | 1. 北京航空材料研究院,北京,100095
2. 贵州新艺机械厂,贵州,561114 |
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| 摘 要： | 采用振动疲劳实验及SEM断口分析等方法,研究了含稀土元素Nd的Ti60高温钛合金稀土相颗粒对叶片振动疲劳裂纹萌生的影响.结果表明:叶片振动疲劳寿命与稀土相颗粒的尺寸和分布位置具有密切关系.稀土相颗粒尺寸越大,对叶片振动疲劳裂纹的萌生作用也越大,疲劳寿命降低;外露于或镶嵌于叶片表面的稀土相颗粒明显促进了叶片振动疲劳裂纹的萌生.
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| 关 键 词： | Ti60钛合金 振动疲劳 疲劳裂纹萌生 |
| 文章编号： | 1001-4381（2007）08-0057-04 |
| 修稿时间： | 2007-01-182007-05-13 |
Effect of Nd-rich Particles on Room Temperature Vibration Fatigue of Ti60 Titanium Alloy |
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| CAI Jian-ming,LI Zhen-xi,CAO Chun-xiao,HUANG Xu,LEI Qiang,ZHANG Yuan-wei.Effect of Nd-rich Particles on Room Temperature Vibration Fatigue of Ti60 Titanium Alloy[J].Journal of Materials Engineering,2007(8):57-60. |
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| Authors: | CAI Jian-ming LI Zhen-xi CAO Chun-xiao HUANG Xu LEI Qiang ZHANG Yuan-wei |
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| Affiliation: | 1 Beijing Institute of Aeronautical Materials, Beijing 100095,China; 2 Guizhou Xinyi Machinery Factory, Guizhou 561114,China |
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| Abstract: | The effect of Nd-rich particles on room temperature vibration fatigue of Ti60 titanium alloy was studied using vibration fatigue testing and scanning electron microscopy(SEM) methods.The fatigue life of blade specimens is strongly depended on the size and distributed state of Nd-rich particles.Increasing the size of the particles may enhance the fatigue crack initiation and reduce the fatigue life.The Nd-rich particles on the surface or sub-surface of blade enhance the crack initiation and decrease the fatigue life of the blade. |
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| Keywords: | Ti60 titanium alloy vibration fatigue fatigue crack initiation |
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