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In this work, Ti 43.3 Zr 21.7 Ni 7.5 Be 27.5  (at.%) bulk metallic glass and Zr 76.11 Ti 4.20 Cu 4.51 Ni 3.16 Be 1.49 Nb 10.53  (at.%) bulk metallic glass composite are used to butt-weld identical alloy specimens using a fiber laser beam under a vacuum. Thereafter, various tests are conducted on the welded specimens to evaluate the applicability of the laser welding process to bulk metallic glasses and bulk metallic glass composites. Crystallization is suppressed during the welding process as much as possible, and welded Ti-based bulk metallic glass and Zr-based bulk metallic glass composite exhibit their original properties although some crystalline phases are formed in the welding fusion zone in Ti-based bulk metallic glass. Therefore, laser welding under a vacuum is appraised as a feasible technology to join bulk metallic glasses and bulk metallic glass composites.

Properties of vacuum-laser-welded Ti-based bulk metallic glass and Zr-based bulk metallic glass composite