| 激光局部强化40Cr钢的疲劳断裂特征 |
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| 引用本文： | 刘常升 徐灏. 激光局部强化40Cr钢的疲劳断裂特征[J]. 东北大学学报(自然科学版), 1995, 16(6): 608-612 |
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| 作者姓名： | 刘常升 徐灏 |
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| 摘 要： | 提出一种激光局部强化方法提高缺口疲劳裂纹萌生抗力。运用单道技术使无搭接的硬化层这个因素独立出来，运用双道技术模拟搭接搭接情况和模拟搭接情况下激光强化对疲劳裂的影响疲劳失效断口的宏观和微观形貌特征。
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| 关 键 词： | 疲劳断裂 钢 激光局部强化 表面改性 |
Fatigue Fracture Characteristic Of Local Laser Modified 40Cr Steel |
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| Liu Changsheng,Cai Qingkui,Xu Hao. Fatigue Fracture Characteristic Of Local Laser Modified 40Cr Steel[J]. Journal of Northeastern University(Natural Science), 1995, 16(6): 608-612 |
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| Authors: | Liu Changsheng Cai Qingkui Xu Hao |
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| Affiliation: | Liu Changsheng;Cai Qingkui;Xu Hao |
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| Abstract: | The local laser modification method is proposed to improve the notch fatigue crack initiation resistance of 40Cr steel. Local laser hardening layer can be simplified by one-pass technique and overlap effectcan be simulated by two-pass technique.The macro and micro fracture surface characteristics of laser hardened and untreated steel were investigated using optical and SEM to examine the fracture micromechanism. |
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| Keywords: | Cr steel laser fatigue fracture surface |
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