| 40Cr钢的疲劳损伤机理研究 |
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| 引用本文： | 董世柱,郭廷良.40Cr钢的疲劳损伤机理研究[J].沈阳大学学报,2005,17(4):48-50. |
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| 作者姓名： | 董世柱 郭廷良 |
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| 作者单位： | 沈阳大学,机械工程学院,辽宁,沈阳,110044 |
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| 摘 要： | 主要通过扫描电镜、电子探针对40Cr钢的疲劳损伤过程进行显微组织及成分分布分析．研究了鉴雾型筝萌生的位置、形状、扩展过程和扩展途径，确定出了微裂纹开始形成时的循环次数．发现裂纹易于在铬的富集区及铬的碳化物处萌生．
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| 关 键 词： | 40Cr钢 疲劳损伤 裂纹萌生 裂纹扩展 |
| 文章编号： | 1008-9225(2005)04-0048-03 |
| 收稿时间： | 01 7 2005 12:00AM |
| 修稿时间： | 2005年1月7日 |
Study on Fatigue Damage Process of 40Cr Steel |
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| DONG Shizhu,GUO Tingliang.Study on Fatigue Damage Process of 40Cr Steel[J].Journal of Shenyang University,2005,17(4):48-50. |
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| Authors: | DONG Shizhu GUO Tingliang |
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| Abstract: | Scanning Electron Microscope (SEM) and Electron Probe Microanalysis (EPMA) analyze the microstructure and the composition distribution of 40Cr steel in the fatigued damage process. The original locations, the shape and the way for the growth of the fatigue micro-cracks are studied. The loading cycles for the initial formation of the micro cracks is conformed. It is found that fatigue micro-cracks initiate easily at the rich-chromium clusters and the chromic carbide. |
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| Keywords: | 40Cr steel fatigue damage crack initiation crack growth |
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