| Technology Problems of Laser Cladding Procedure for in-situ TiCp／Al Composite Layer on Aluminum Alloy |
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| 引用本文： | 马乃恒,王浩伟,梁工英,苏俊义.Technology Problems of Laser Cladding Procedure for in-situ TiCp／Al Composite Layer on Aluminum Alloy[J].上海交通大学学报(英文版),2004,9(1):15-18. |
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| 作者姓名： | 马乃恒 王浩伟 梁工英 苏俊义 |
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| 作者单位： | School of Materials Science and Eng.，Shanghai Jiaotong Univ.，School of Materials Science and Eng.，Shanghai Jiaotong Univ.，School of Mechanical Eng.，Xi'an Jiaotong Univ.，School of Mechanical Eng.，Xi'an Jiaotong Univ. Shanghai 200030，China，Shanghai 200030，China，Xi'an 710049，Xi'an 710049 |
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| 基金项目： | National Natural Science Foundation ofChina (No.5 98710 3 8) |
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| 摘 要： | IntroductionLaser cladding on aluminum alloy surface is avalid means to improve its surface characteristic.In the past researches,the self- molten alloys wereusually used for laser claddings to improve surfacewear resistance of aluminum alloys1,2 ] .However,owing to great difference of heat expansion coeffi-cients between aluminum alloy substrate and cladmaterials,such as Ni- Cr- Si- B,Ni- Cr- Al,the big-ger strain in clad layer is formed during solidifica-tion,which results in a lot of cr…
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| 关 键 词： | 激光表面处理 处理过程 铝合金 镥钛／铝复合材料 微观结构 |
Technology Problems of Laser Cladding Procedure for in-situ TiCp/Al Composite Layer on Aluminum Alloy |
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| MA Nai-heng ,WANG Hao-wei ,LIANG Gong-ying ,SU Jun-yi.Technology Problems of Laser Cladding Procedure for in-situ TiCp/Al Composite Layer on Aluminum Alloy[J].Journal of Shanghai Jiaotong university,2004,9(1):15-18. |
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| Authors: | MA Nai-heng WANG Hao-wei LIANG Gong-ying SU Jun-yi |
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| Institution: | 1. School of Materials Science and Eng.,Shanghai Jiaotong Univ.,Shanghai 200030,China
2. School of Mechanical Eng.,Xi'an Jiaotong Univ.,Xi'an 710049 |
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| Abstract: | The process of laser cladding procedure has a closely relation with properties of composite cladding layers. When the input power of laser is certain, the low scanning velocity makes substrate with ahead of laser beam heat for a long time, which worsens interface bonding from surface oxidized; much higher scanning velocity makes the powder's synthesis near substrate uncompleted fully, the remained powder in interface worsens interface bonding as well. Otherwise, the input specific energy of laser influences on in-situ synthesis courses. If the input energy is lower, the synthesis is not completed fully. In addition, the low temperature effects not only restrict the dispersion of particle leading uneven distribution of TiC, but also form some regions consisting of Al and Al 3Ti. |
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| Keywords: | laser cladding composite in-situ synthesis cladding process |
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