含In的Al-Mg合金焊丝焊接性能研究

Research on Welding Properties of Al-Mg Alloy Welding Wire Containing In

摘要: 本文研究了Al-Mg-In焊丝，用MIG方法焊接5052铝合金板时所得焊接接头的力学性能，并与ER5356焊丝进行了对比。结果表明在相同的MIG焊接工艺参数下，两种焊丝所得焊缝的强度相差不大。当焊接电流为90 A，焊接速度为40 mm/min时，用Al-5.4 Mg-0.13 In焊丝焊接时所得焊接接头的抗拉强度为204.7 MPa，达到母材的86.9%；而用ER5356焊丝时，则为202.9 MPa，达到母材的86.1%。在相同的MIG焊接工艺参数下，用Al-5.4 Mg-0.13 In焊丝的焊接所得焊缝的铺展面积明显大于ER5356焊丝，Al-5.4 Mg-0.13 In焊丝熔池具有好的流动性。

Abstract: In this research, the weld ability of 5052 aluminum alloy sheet using MIG and an Al-Mg-In welding wire was studied. The results show that the welded joint strength of Al-5.4 Mg-0.13 In welding wire is almost the same as ER5356 welding wire. At the welding conditions of 90 A and 40 mm/min, tensile strength of welded joint of Al-5.4 Mg-0.13 In welding wire and ER5356 welding wire is 204.7 MPa and 202.9 MPa respectively. The above tensile strength reaches 86.9% and 86.1% of the base metal’s tensile strength respectively. The spreading areas of Al-5.4 Mg-0.13 In welding wire are distinctly better than that of traditional ER5356 welding wire, which means the former has good wettability.