Ultrasonic Spot Welding of Lightweight Alloys
作者： S.D. Bhole , D.L. Chen , V.K. Patel
DOI:
关键词: Lap joint 、 Materials science 、 Brittleness 、 Ultimate tensile strength 、 Laser beam welding 、 Shear strength 、 Composite material 、 Metallurgy 、 Welding 、 Alloy 、 Spot welding
摘要: The structural applications of lightweight alloys in the automotive and aerospace industries inevitably involve welding joining challenging dissimilar Mg-to-Al Mg-to-steel while guaranteeing safety integrity. Sound lap joints were achieved via ultrasonic spot (USW) – an environment-friendly solid-state technique. addition Sn interlayer during USW effectively blocked formation brittle Al12Mg17 intermetallic compound without interlayer, led to presence a distinctive composite-like Mg2Sn eutectic structure both Mg-to-HSLA (high strength low alloy) steel joints. shear types with was significantly higher than that corresponding interlayer. Failure tensile tests occurred mainly mode cohesive failure partial nugget pull-out In particular, resulted energy saving since required achieve maximum decreased from 1250 J 1000 1750 1500
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