镁合金活性TIG焊焊接接头组织特征分析

Microstructure feature analysis of activating TIG welded joint

摘要: 对活性化焊接(A-TIG)方法在镁合金焊接中的应用进行了初步的探讨。选取TiO₂作为活性剂,研究了单一活性剂TiO₂对镁合金焊接后微观组织的影响。试验结果表明,涂敷单一活性剂TiO₂可以使焊缝熔深比常规的TIG焊增加2倍。与未涂敷活性剂的焊缝相比,涂敷TiO₂活性剂可以增大焊接的熔深,减小熔宽。

Abstract: The effect of activating fluxes with single component TiO₂ on weld form in tungsten inert-gas (TIG) welding of magnesium alloy is studied.The experimental results show that the penetration is more than 2 times compared to the conventional TIG welding.Compared with weld made without flux the penetration increases,and the width decreases.The flux developed has no effect on the microstructure.