Towards industrial ultrafast laser microwelding: SiO2 and BK7 to aluminum alloy
Towards industrial ultrafast laser microwelding: SiO2 and BK7 to aluminum alloy
复制标题
DOI：
10.1364/ao.56.004873
复制
发表时间：
2017-06-01
期刊：
影响因子：
1.9
通讯作者：
Hand, Duncan P.
中科院分区：
文献类型：
--
作者：
Carter, Richard M.;Troughton, Michael;Hand, Duncan P.
我们报告了工业相关 Al6082 零件与 SiO2 和 BK7 的皮秒激光微焊接的系统分析和比较。给出了脉冲能量和焦点深度对焊接强度的参数映射。研究发现，焊接过程强烈依赖于焦平面，但对脉冲能量的变化具有很大的耐受性。介绍了通过 -50 摄氏度至 +90 摄氏度的热循环进行的加速寿命测试。 Al6082-BK7 零件的焊缝在热膨胀系数比为 3.4:1 的整个温度范围内都能保持完好。 Al6082-SiO2 零件（比例 47.1:1）的焊缝只能在有限的温度范围内存活。
We report systematic analysis and comparison of ps-laser microwelding of industry relevant Al6082 parts to SiO2 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 degrees to +90 degrees 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-SiO2 parts (ratio 47.1:1) survive only a limited temperature range.