| 送粉法激光熔覆制备TiC颗粒强化Ni基合金复合涂层的研究 |
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| 引用本文： | 杨森,刘文今,钟敏霖.送粉法激光熔覆制备TiC颗粒强化Ni基合金复合涂层的研究[J].应用激光,2003,23(5):265-267. |
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| 作者姓名： | 杨森 刘文今 钟敏霖 |
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| 作者单位： | 清华大学,机械工程系激光加工研究中心,北京,100084 |
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| 基金项目： | 清华大学 985重点基金，航天科技创新基金，中国博士后科学基金，清华 -中大博士后科学基金资助项目 |
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| 摘 要： | 利用 3kW连续波快速轴流CO2 激光器和送粉式激光熔覆技术在碳钢表面进行了制备原位自生TiC颗粒强化Ni基合金复合涂层的研究。实验结果表明 :涂层以外延生长的方式生长 ,与基体呈良好的冶金结合 ,涂层宏观质量完好 ,无裂纹。涂层组织由γ -奥氏体枝晶、CrB、Ni3 B、M2 3 C6和TiC组成。从熔覆层底部到顶部显微硬度逐渐增大 ,最大可达HV0 .2 1 2 0 0 ,是基材显微硬度的 5倍
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| 关 键 词： | 原位合成 激光熔覆 送粉 TiC颗粒强化 |
Research on TiC Particulate Nickel Based Alloy Composite Coating Produced by Powder Feeding Laser Cladding |
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| Yang Sen,Wenjin Liu,Zhong Minlin.Research on TiC Particulate Nickel Based Alloy Composite Coating Produced by Powder Feeding Laser Cladding[J].Applied Laser,2003,23(5):265-267. |
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| Authors: | Yang Sen Wenjin Liu Zhong Minlin |
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| Abstract: | An in-situ TiC particles reinforced composite coating has been successfully produced using a 3 kW continuous wave CO2O3 laser. The experiment result showed that the coating epitaxially grew from the substrate, excellent bonding between the coating and the carbon steel substrate was ensured by the strong metallurgical interface. The coating is uniform, continuous and free from cracks. The microstructure of the coating was mainly composed of γ-Ni dendrite, a small amount of CrB, Ni 3B, M 2 3C 6 and dispersed TiC particles. The microhardness gradually increased from the bottom to the top of the coating, and the maximum was more than HV 0 . 21200, which was 5 times larger than that of the substrate. |
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| Keywords: | In-situ formation Laser cladding Powder feeding TiC particulate reinforcement |
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