| 铝/钢异种金属激光填丝熔-钎焊连接工艺研究 |
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| 引用本文： | 张冬云,高双欣,高海芸,赵建哲. 铝/钢异种金属激光填丝熔-钎焊连接工艺研究[J]. 激光与光电子学进展, 2011, 0(6) |
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| 作者姓名： | 张冬云 高双欣 高海芸 赵建哲 |
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| 作者单位： | 北京工业大学激光工程研究院; |
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| 摘 要： | 采用板条CO2激光器对铝-钢异种金属搭接接头进行激光填丝焊接试验研究。分析了不同热输入量对焊缝成形质量的影响以及不同热输入量对焊缝显微组织、焊缝物相及力学性能的影响。实验结果表明,与低能量密度参数下的焊接接头相比高能量密度参数下的焊缝内部组织将不再均匀,而是出现了条状或块状金属间化合物FeAl,铝-铁界面产生的金属间化合物厚度增加,钢板熔化区主要物相也由低能量密度时的FeAl和Al与-αFe形成的固溶体转变为Fe3Al和Al与-αFe形成的固溶体,从而降低了焊缝的力学性能。拉剪结果显示,高能量密度焊接参数下的焊缝抗拉(剪)强度仅为低能量密度下的72.9%。
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| 关 键 词： | 激光技术 激光填丝焊接 搭接焊 金属间化合物 |
Wire Feeding Laser Brazing and Fusion for Al-Fe Dissimilar Metal |
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| Zhang Dongyun Gao Shuangxin Gao Haiyun Zhao Jianzhe. Wire Feeding Laser Brazing and Fusion for Al-Fe Dissimilar Metal[J]. Laser & Optoelectronics Progress, 2011, 0(6) |
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| Authors: | Zhang Dongyun Gao Shuangxin Gao Haiyun Zhao Jianzhe |
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| Affiliation: | Zhang Dongyun Gao Shuangxin Gao Haiyun Zhao Jianzhe(College of Laser Engineering,Beijing University of Technology,Beijing 100124,China) |
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| Abstract: | Dissimilar metal joining of steel/aluminum alloy by slab CO2 laser beam welding with filling wire is investigated and the influence of different heat input on the weld formation quality is introduced.The influence of different heat input on microstructure,phase and mechanical properties of joints are analyzed.The experimental results show that microstructure in the joints with higher heat input parameters compared with lower heat input parameters is no longer homogenous,Fe-Al intermetallic phase with the sh... |
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| Keywords: | laser technique laser welding with filler wire lap welding intermetallics |
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