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首页> 外文期刊>Lasers in Manufacturing and Materials Processing >Laser Welding of Thin Copper and Aluminum Sheets:Feasibility and Challenges in Continuous-Wave Welding of Dissimilar Metals
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Laser Welding of Thin Copper and Aluminum Sheets:Feasibility and Challenges in Continuous-Wave Welding of Dissimilar Metals

机译：薄铜和铝薄板的激光焊接：异种金属连续波焊接的可行性和挑战

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摘要

The present paper defines process windows for laser welding of thin copper and aluminum sheets in Al-Cu and Cu-Al lap-joint configurations, exploiting different process strategies and parameters. A single-mode continuous-wave (CW) laser source was exploited with both linear and wobbling strategies. In both cases the influence of several parameters, such as, laser power, spot dimensions and scanning speed on the resulting microstructure and joint strength was analyzed. The influence of one, two and three parallel beads on the maximum shear strength was also evaluated. The optimum process configurations were finally determined based on maximum joint strength in shear tests and the mixing of the two parent metals occurring after welding was determined by means of SEM-EDS analysis.
机译：本文利用不同的工艺策略和参数，定义了用于以Al-Cu和Cu-Al搭接方式对薄铜和铝板进行激光焊接的工艺窗口。单模连续波（CW）激光源已被采用线性和摆动策略。在这两种情况下，都分析了诸如激光功率，光斑尺寸和扫描速度等几个参数对所得微结构和接头强度的影响。还评估了一个，两个和三个平行珠对最大剪切强度的影响。最终，基于剪切试验中的最大接合强度确定了最佳工艺配置，并通过SEM-EDS分析确定了焊接后两种母金属的混合。

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