| 工业纯铝表面激光熔覆Y粉的研究 |
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| 引用本文： | 赵永,黄安国,熊建钢,陈晓娟,尼军杰,李志远.工业纯铝表面激光熔覆Y粉的研究[J].激光技术,2008,32(5):465-467. |
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| 作者姓名： | 赵永 黄安国 熊建钢 陈晓娟 尼军杰 李志远 |
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| 作者单位： | 1.华中科技大学, 材料科学与工程学院, 武汉, 430074 |
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| 摘 要： | 为了研究稀土Y元素对工业纯铝表面激光熔覆层的组织和性能的影响,在工业纯铝基体上,采用CO2激光器制备了Al-Y合金熔覆层,利用金相显微镜、能谱分析、X射线衍射分析和显微硬度计等对熔覆层的显微组织、成分分布、物相组成和显微硬度进行了研究。由实验结果可知,Y元素显著细化了熔覆层的组织,熔覆层与基体形成良好的冶金结合;生成了含Y的新相YAl3,Y4Al2O9等铝钇金属间化合物;熔覆层区域的显微硬度43HV0.2~58HV0.2与基体的显微硬度30HV0.2~40HV0.2相比提高了50%~60%,在熔覆层表面硬度值达到最高。结果表明,通过激光熔覆Y粉可以提高工业纯铝的表面性能。
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| 关 键 词： | 激光技术 激光熔覆 Al-Y合金 显微组织 表面性能 |
| 收稿时间： | 2007/6/11 |
Laser cladding of Y powder on pure aluminium surface |
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| ZHAO Yong,HUANG An-guo,XIONG Jian-gang,CHEN Xiao-juan,NI Jun-jie,LI Zhi-yuan.Laser cladding of Y powder on pure aluminium surface[J].Laser Technology,2008,32(5):465-467. |
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| Authors: | ZHAO Yong HUANG An-guo XIONG Jian-gang CHEN Xiao-juan NI Jun-jie LI Zhi-yuan |
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| Affiliation: | ZHAO Yong,HUANG An-guo,XIONG Jian-gang,CHEN Xiao-juan,NI Jun-jie,LI Zhi-yuan(Material Science , Technology College,Huazhong University of Science , Technology,Wuhan 430074,China) |
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| Abstract: | In order to improve the surface properties of aluminum,the Al-Y alloy coating was fabricated by laser cladding directly melting the preplaced Y powder on substrate.With optimum process parameters,the coating layer with good metallurgical bonding performance was formed,and the grain size in cladding layer was smaller than the substrate.The microstructure characteristics of coating layer were studied by using metallogenetic microscope,energy disperse spectroscopy,X-ray diffraction and micro-hardness analysis.... |
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| Keywords: | laser technique laser cladding Al-Y alloys microstructure surface properties |
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