| SiCp/6061Al金属基复合材料激光焊接研究 |
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| 引用本文： | 陈永来,尚敏佳,于利根,王华明,熊柏青,樊建中.SiCp/6061Al金属基复合材料激光焊接研究[J].应用激光,1999(5). |
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| 作者姓名： | 陈永来 尚敏佳 于利根 王华明 熊柏青 樊建中 |
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| 作者单位： | 北京航空航天大学激光材料加工与表面工程实验室!北京 100083，北京航空航天大学激光材料加工与表面工程实验室!北京 100083，北京航空航天大学激光材料加工与表面工程实验室!北京 100083，北京航空航天大学激光材料加工与表面工程实验室!北京 100083，北京有色金属研究总院!北 |
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| 摘 要： | 采用高能ＣＯ_２激光束对 ＳｉＣ颗粒增强 ６０６１铝基复合材料 ＳｉＣｐ／６０６１ＡＩＭＭＣ进行激光焊接、研究激光焊接工艺参数及填充材料对焊缝显微组织的影响。结果表明，对 ＳｉＣｐ／６０６１Ａｌ复合材料进行激光焊接，可以获得气孔很少、质量较高的焊接接头，但在激光直接熔化焊接焊缝中形成针状Ａｌ_４Ｃ_３脆性相，脆性相Ａｌ_４Ｃ_３的数量与尺寸随激光束功率密度增加而增大，随焊接速度增大而减少。激光焊接时加入０．３ｍｍ厚的金属钛片作为填充材料，在焊缝中形成ＴｉＣ增强相，从而抑制了脆性相Ａｌ_４Ｃ_３的形成。
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| 关 键 词： | SiCp/6061Al金属基复合材料 激光焊接 填充材料 Al_4C_3 TiC |
Laser Beam Welding of SiC Particle Reinforced 6061 Aluminum Alloy Metal Matrix Composite |
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| Chen Yonglai,Shang Minjia,Yu Ligen,Wang Huaming.Laser Beam Welding of SiC Particle Reinforced 6061 Aluminum Alloy Metal Matrix Composite[J].Applied Laser,1999(5). |
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| Authors: | Chen Yonglai Shang Minjia Yu Ligen Wang Huaming |
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| Abstract: | SiC particle reinforced 6061 aluminum alloy metal matrix composite (SiCp/6061Al MMC)is welded with a high power continuous wave CO_2 laser. Microstructure of the laser welded SiCp/6061 Al MMC is characterized as functions of laser processing parameters. Results show that saund weld joints with few pores can be achieved by laser beam welding of SiCp/6061MMC. Needle-like aluminum carbide is formed in the weld during laser beam fusion welding process without filler metal addition. The size and volume fractions of aluminum carbide are proportional to the laser power density and inversely proportional to the welding speed. Formation of the aluminum carbide in the weld is prohibited by adding titanium thin plate (0.3mm in thickness )as filler metal during laser beam welding. |
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| Keywords: | SiCp/6061Al MMC laser beam welding filler metal Al_4C_3 TiC |
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