Micro-resistance seam welding of bulk metallic glasses

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Zr based bulk metallic glasses has superior mechanical properties such as high strength and low Young' s modulus. It is necessary to weld metallic glasses to structural alloys to manufacture attractive devices. In the present study, Zr based metallic glass was welded to austenitic stainless steel by micro-resistance spot and seam welding. The microstructural development at the weld interface was investigated, which revealed the welding mechanism. It has been clarified that the weld interfacial structure influenced the weld interfacial strength. Moreover, a novel method considering equipotential surface in the workpieces has been proposed to estimate the current path area at the faying interface.