铝合金CO_2激光与TIG薄板焊接接头力学性能分析

Mechanical properties of CO_2-laser and TIG aluminium alloy welded joint

对铝合金5A02薄板本身的力学性能、CO2激光焊接与TIG焊接两种焊接方法的铝合金薄板焊接接头的力学性能进行了测定,并对轧制方向与垂直轧制方向的力学性能进行了测定。另外采用系列加载试验对焊缝、母材的性能进行了研究。结果表明,材料的各向异性影响焊接接头的性能,焊接接头的力学性能与各个区域的性能存在一定的关系,为焊缝的表征提供了理论依据,为铝合金的汽车构件碰撞模拟提供局部力学性能的试验数据。

The mechanical properties of Al-alloy 5A02 and its welded joint of CO2 laser welding and TIG welding were studied. And rolling-orientation and rolling-uprightness orientation mechanical properties were measured. In addition, series load experiments were used to study properties of weld and base metal. This study considered that material anisotropy affects welded-joint mechanical properties,which is relate to each area materials mechanical properties of welded joint,will provide the theoretical bases for investigation of welded joint, as well as provide the local mechanical properties experimental data for crash simulation of Al-alloy automobile components.