Carter Richard M, Troughton Michael, Chen Jianyong, Elder Ian, Thomson Robert R, Daniel Esser M J, Lamb Robert A, Hand Duncan P
Appl Opt. 2017 Jun 1;56(16):4873-4881. doi: 10.1364/AO.56.004873.
We report systematic analysis and comparison of ps-laser microwelding of industry relevant Al6082 parts to SiO and BK7. Parameter mapping of pulse energy and focal depth on the weld strength is presented. The welding process was found to be strongly dependent on the focal plane but has a large tolerance to variation in pulse energy. Accelerated lifetime tests by thermal cycling from -50° to +90°C are presented. Welds in Al6082-BK7 parts survive over the full temperature range where the ratio of thermal expansion coefficients is 3.4:1. Welds in Al6082-SiO parts (ratio 47.1:1) survive only a limited temperature range.
我们报告了对工业相关的Al6082零件与SiO和BK7进行皮秒激光微焊接的系统分析和比较。给出了脉冲能量和焦深对焊接强度的参数映射。发现焊接过程强烈依赖于焦平面，但对脉冲能量的变化具有较大的容忍度。还给出了从-50°C到+90°C的热循环加速寿命测试。Al6082-BK7零件中的焊缝在热膨胀系数比为3.4:1的整个温度范围内都能承受。Al6082-SiO零件中的焊缝（比例为47.1:1）仅能在有限的温度范围内承受。
