Pulsed Nd:YAG laser welding of Cu54Ni6Zr22Ti18 bulk metallic glass

Hardness and free volume distributions of Zr-based alloys spot treated by laser beam

“…So it is impossible to keep amorphous surface, while the other parts are crystallized by heat treatment. Laser [3][4][5][6][7][8] is a high energy density power, which has been used for material processing, such as laser welding, laser cladding, and laser heat treatment. Laser heat treatment is a kind of surface heat treatment technology, i.e., achieves surface heat treatment by heating metal material's surface using laser beam.…”

Corrosion behavior of Zr–Cu–Ni–Al bulk metallic glasses in chloride medium

“…BMGs have unique characteristics (high mechanical strength, high elastic limit, good corrosion resistance, etc. ), which cannot be obtained for conventional materials [3]. The structural disorderness, chemical homogeneity and absence of nucleation sites for corrosion such as grain boundaries or dislocations make BMGs good corrosion resistant as compared to their crystalline counterparts.…”

Small-scale resistance spot welding of bulk glassy alloys

“…It is known, however, that structural relaxation or crystallization occurs in metallic glass when heated as it becomes more brittle, which makes welding extremely difficult. By contrast, a succession of alloys with markedly improved glass-forming capabilities have recently been developed, the difficulties of welding have been reduced and there have been reports of successful welding by such techniques as friction pressure welding 1 -4 , laser welding 5,6 and electron beam welding 7 -9 . Like fusion welding, all of these have a characteristically rapid cooling rate and show no change in composition.…”