BONDING OF Mg-BASE METALLIC GLASS THROUGH RAPID RESISTIVE WELDING

摘要

Efficient joining of magnesium-base bulk metallic glass can be achieved via bonding through resistance welding using rapid heating rates. Bonding of Mg-base metallic glasses (as well as regular Mg alloys) is a process hindered by the ease of oxidation on the surface of these materials. In this work, resistance welding of Mg_(65)Cu_(25) Y_(10) metallic glass sheets was investigated up to 400°C, that is, below the liquidus temperature and also within its supercooled liquid region, during processing times of a few seconds. The method generated strong joins between the sheets even when processed in air. It was also found that a fluxing pre-treatment of the material surface aids in achieving effective bonding. This work also demonstrated that Mg-base metallic glasses can be effectively and easily joined to other types of materials.