| 多冲载荷下激光熔覆涂层裂纹机理分析 |
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| 引用本文： | 陈从桂,石世宏,于连玉,李良栋.多冲载荷下激光熔覆涂层裂纹机理分析[J].四川激光,2007,28(2):77-77,79. |
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| 作者姓名： | 陈从桂 石世宏 于连玉 李良栋 |
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| 作者单位： | [1]南华大学机械工程学院,湖南衡阳421001 [2]苏州大学机械工程学院,江苏苏州215021 [3]济南机车车辆厂技术中心,山东济南250022 [4]湖南飞碟新材料有限责任公司,湖南长沙410007 |
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| 摘 要： | 为了研究激光熔覆涂层在小能量多冲载荷下抗裂性能,进行了激光熔覆涂层在小能量多冲载荷下作用的多冲试验,结果显示激光熔覆涂层出现裂纹损伤失效现象,裂纹形式的特征有明显差异,表现为横断裂纹和边缘裂纹.根据裂纹的不同特征,进行了裂纹形成的理论分析,其结论在实验中得到了验证.
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| 关 键 词： | 疲劳分析 多冲载荷 裂纹机理 激光熔覆层 多冲载荷 激光熔覆涂层 涂层裂纹 机理分析 impact loading repeated coat laser cladding cracks analysis 验证 实验 理论 裂纹形成 边缘裂纹 横断 表现 差异 特征 失效现象 |
| 文章编号： | 0253-2743（2007）02-0077-02 |
| 修稿时间： | 2006-06-05 |
Mechanism analysis of cracks in laser cladding coat under repeated impact loading |
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| CHEN Cong-gui,SHI Shi-hong,YU Lian-yu,LI Liang-dong.Mechanism analysis of cracks in laser cladding coat under repeated impact loading[J].Laser Journal,2007,28(2):77-77,79. |
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| Authors: | CHEN Cong-gui SHI Shi-hong YU Lian-yu LI Liang-dong |
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| Affiliation: | 1. School of Mechanical Engineering, Nanhua University, Hengyang 421001 , China; 2. School of Mechanical Engineering, Suzhou University, Suzhou Jiang Su 215021, China 3.Technic Center,Jinan Locomotive Rolling Stock Plant,Jinan 250022,, China; 4. Hunan Feidie New materials Co., Ltd, Chang sha 410007, China |
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| Abstract: | In order to research the cracking - resistance of laser cladding coat under repeated impact loading with low energy, the experiments with laser cladding coat under repeated impact loading with low energy were performed. As a result, the crack damage failure in laser cladding coat was discovered, and the features of crack formation had obvious difference which showed traverse crack and edge crack. According to the different features of cracks, the forming of cracks was analyzed theoretically which was verified through experiments. |
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| Keywords: | fatigue analysis repeated impact loading mechanism of crack laser cladding coat |
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