| 航空发动机叶片铸造缺陷激光熔覆修复的研究 |
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| 引用本文： | 刘其斌,李绍杰.航空发动机叶片铸造缺陷激光熔覆修复的研究[J].金属热处理,2006,31(3):52-55. |
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| 作者姓名： | 刘其斌 李绍杰 |
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| 作者单位： | 贵州大学,材料科学与冶金工程学院,贵州,贵阳,550003 |
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| 基金项目： | 贵州省科技厅工业攻关项目 |
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| 摘 要： | 研究了激光熔覆工艺参数和Y2O3含量对航空发动机叶片铸造缺陷激光熔覆开裂敏感性的影响。结果表明，当激光工艺参数P=1．5kW，V=180、190mm／min，d=3mm以及Y2O3含量为1．5wt％时，可在铸造镍基高温合金叶片上获得无裂纹的修复涂层。当Y2O3含量高于或低于1．5wt％时，熔覆层内部或熔覆层表面产生裂纹。在最佳工艺参数条件下加入复合变质剂可进一步细化涂层的组织。
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| 关 键 词： | 镍基高温合金 叶片 铸造缺陷 激光熔覆 开裂敏感性 修复 |
| 文章编号： | 0254-6051（2005）03-0052-04 |
| 收稿时间： | 2005-09-12 |
| 修稿时间： | 2005-09-12 |
Repairing of Aeroengine Blade with Cast Defect by Laser Cladding |
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| LIU Qi-bin,LI Shao-jie.Repairing of Aeroengine Blade with Cast Defect by Laser Cladding[J].Heat Treatment of Metals,2006,31(3):52-55. |
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| Authors: | LIU Qi-bin LI Shao-jie |
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| Affiliation: | School of Materials Science and Metallurgy Engineering, Guizhou University, Guiyang Guizhou 550003 ,China |
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| Abstract: | Effects of laser cladding parameters and content of Y2O3 on thermal crack sensibility of aeroengine blade with cast defect were studied. The results show that when P = 1.5kW, V = 180 and 190mm/min ,d = 3mm, content of Y2O3 is 1.5wt% ,the coating of laser cladding without crack can be obtained on the cast blade of high temperature Ni based alloy. When the content of Y2O3 is higher or lower than 1.5wt% ,crack will appear in inside or on the surface of the coating. Under the optimum laser cladding parameters, adding modifying agent can further fine the microstructure of coating. |
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| Keywords: | Ni based high temperature alloy blade cast defect laser cladding cracking sensibility repairing |
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