Micro-resistance seam welding of bulk metallic glasses

Zr基大块金属玻璃具有高强度、低杨氏模量等优异的力学性能。为了制造有吸引力的器件，必须将金属玻璃焊接到结构合金上。本研究采用微电阻点焊和缝焊的方法将Zr基金属玻璃与奥氏体不锈钢焊接。研究了焊接界面的微观组织发展，揭示了焊接机理。阐明了焊缝界面结构对焊缝界面强度的影响。在此基础上，提出了一种考虑工件等电位面的方法来估算接触面处电流路径面积。

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.