| Cr4M04V钢表面预制缺陷对滚动接触疲劳性能的影响 |
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| 引用本文： | 李锦峰,赵红平,施惠基,冯西桥.Cr4M04V钢表面预制缺陷对滚动接触疲劳性能的影响[J].航空材料学报,2005,25(6):5-10. |
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| 作者姓名： | 李锦峰 赵红平 施惠基 冯西桥 |
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| 作者单位： | 清华大学,工程力学系,北京,100084 |
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| 基金项目： | 国家自然科学基金(50371042,10121202) |
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| 摘 要： | 用推力片实验研究了表面预制缺陷对Cr4Mo4V高温轴承钢滚动接触疲劳性能的影响。应用洛氏硬度计和维氏硬度计预制不同形状、不同大小的表面缺陷,通过扫描电镜记录滚动疲劳裂纹的萌生、发展乃至试样失效的全过程。结果表明,表面预制缺陷对Cr4Mo4V钢滚动接触疲劳性能有很大的影响。不同形状的预制缺陷对疲劳性能有不同的影响,且疲劳性能有明显的缺陷尺寸效应。
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| 关 键 词： | Cr4Mo4V 滚动接触疲劳 表面预制缺陷 |
| 文章编号： | 1005-5053(2005)06-0005-06 |
| 修稿时间： | 2005年1月23日 |
Effects of Surface Defects on the Rolling Contact Fatigue Behaviors of Cr4Mo4V Steel |
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| LI Jin-feng,ZHAO Hong-ping,SHI Hui-ji,FENG Xi-qiao.Effects of Surface Defects on the Rolling Contact Fatigue Behaviors of Cr4Mo4V Steel[J].Journal of Aeronautical Materials,2005,25(6):5-10. |
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| Authors: | LI Jin-feng ZHAO Hong-ping SHI Hui-ji FENG Xi-qiao |
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| Abstract: | The effects of surface defects on the rolling contact fatigue behaviors of Cr4Mo4V steel were studied experimentally.Different sizes of dents were artificially introduced on the rolling trajectories of the specimens by the Rockwell and Vickers Hardness Testers.The failure process from the initiation and propagation of the defect-induced cracks and spalling near the dents was observed by SEM.It was found that surface dents might influence greatly the rolling contact fatigue behaviors of Cr4Mo4V steel,and that the fatigue damage induced by Rockwell dents was more serious than that by Vickers dents.An obvious size effect of defect evolution was also observed:a bigger dent was much easier to crack than a smaller one. |
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| Keywords: | Cr4Mo4V rolling contact fatigue surface dents |
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