| 激光催裂的初步研究 |
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| 引用本文： | 龚俊,芮执元,郎福元,魏庆同,靳伍银.激光催裂的初步研究[J].兰州理工大学学报,1994(4). |
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| 作者姓名： | 龚俊 芮执元 郎福元 魏庆同 靳伍银 |
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| 作者单位： | 甘肃工业大学裂纹技术研究所 |
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| 摘 要： | 利用激光可实现对预制Ｖ型切口根部一定深度层内的淬硬，从而大大提高了材料的屈服强度，降低了断裂韧性值Ｋ＿（１ｃ），减少了疲劳断裂周次；并且实现了塑性较好材料的韧性断裂到脆性断裂的转化，降低了断裂能耗，提高了断料效率和断口质量。
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| 关 键 词： | 疲劳断裂 韧性断裂 脆性断裂 激光 切口试件 |
The Preliminary Study of Laser-catalyzed Cracking |
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| Gong Jun,Rui Zhiyuan,Lang Fuyuan,Wei Qintong,Jin Wuyin.The Preliminary Study of Laser-catalyzed Cracking[J].Journal of Lanzhou University of Technology,1994(4). |
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| Authors: | Gong Jun Rui Zhiyuan Lang Fuyuan Wei Qintong Jin Wuyin |
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| Abstract: | Through the hardening of V-notch root to a certain degree by Laser process,theyield strength of material is increased,the fracture toughness K_(1c) and the fatigue fracturecycle index can be decreased.As a result,plastic materials exhibit the transformation fromductile fracture to brittle fracture with low fracture energy and the improvement of stock-fracture efficiency and the fractured surface quality. |
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| Keywords: | fatigue fracture ductile fracture brittle fracture laser static fracture notched specimen |
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