The effects of initial rejuvenation on the cold joining behavior of Cu60Zr40 metallic glass

Molecular dynamics simulations of cold welding of nanoporous amorphous alloys: effects of welding conditions and microstructures

“…71 Zhou et al 13 demonstrated that a large welding velocity makes the mechanical stability of welded structures reduce, because of the high kinetic energy. Bokov et al 22 investigated how the welding velocity affects the microstructures of Cu 60 Zr 40 metallic glass nanowires and discovered that a larger welding velocity promotes the disintegration of the Cu-center clusters, thereby reducing the tensile strength of the welded component. Similar phenomena were captured in our previous work focusing on the cold welding of single crystalline Cu 57 and amorphous CuZr nanowires.…”

“…Previously, we investigated the cold welding mechanisms and mechanical strength of amorphous Cu 50 Zr 50 nanowires, 24 nanoporous Au, 14 and Cu nanowires. 57 Other researchers reported the cold welding of Au nanowires, 23,58 Cu-Zr metallic glasses, 22 and Ag nanowires. 59 These welded products fail mainly due to the neck and fracture of the welded joints.…”

“…Their results showed that an increase in joining velocity causes the tensile strength of the welded joint to decrease remarkably, whereas the rejuvenated materials have relatively weaker sensitivity to joining velocity. 22 Wu et al 23 through MD simulations revealed the cold welding behaviors of monocrystal and amorphous Au nanowires. The amorphous Au nanowire was easier to align than the monocrystal nanowire, due to its relatively more stable geometry.…”

“…[19][20][21] Although the cold welding technique is commonly used for crystals, its applicability to amorphous metals has been verified. Bokov et al 22 investigated the cold joining of Cu 60 Zr 40 amorphous alloys, with the consideration of temperature, rejuvenation process, and joining velocity. Their results showed that an increase in joining velocity causes the tensile strength of the welded joint to decrease remarkably, whereas the rejuvenated materials have relatively weaker sensitivity to joining velocity.…”