AZ31镁合金激光焊接工艺研究

Research of laser welding process for AZ31 magnesium alloy

为了解决ZA31镁合金激光焊接接头强度低的问题,采用激光摆动进行焊接。采用不同焊接速度、扫描频率以及扫描振幅等工艺参数,研究其对AZ31镁合金焊接接头性能的影响。研究结果表明:在优化的焊接工艺参数条件下,焊接接头的抗拉强度为216 N/mm2,达到母材抗拉强度的85%以上。激光焊接在AZ31镁合金焊接上显示出良好的应用前景。

To solve the problem of low welding strength of AZ31 magnesium alloy,the laser-weaving processing head was used for laser welding experiment.The welding joint properties of AZ31 magnesium alloy was investigated with different welding speeds,scanning frequencies and scanning amplitudes.After welding parameters optimized,the tensile strength of welding joint was 216 N/mm2,more than 85%of the base metal.Laser-weaving welding shows a good application prospect in AZ31 magnesium alloy.