| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1600290 | Intermetallics | 2013 | 7 Pages |
A Zr55Cu30Al10Ni5 bulk metallic glass (BMG) plate with thickness of 2 mm was successfully spot friction stir welded to a commercial pure Cu plate. Microstructural characterization revealed that some serrations formed at the edge of the BMG plate and some nano-sized nucleuses were dispersed in the BMG side along the Cu/BMG joint interface. In the upper Cu side close to the keyhole, some blocky and strip-like BMG fragments were embedded in the Cu matrix. As a result, significantly elongated Cu grains with width of about 200 nm were formed between the strip-like BMG fragments. Shear tensile tests showed that the Cu/BMG spot joints fractured at a maximum load of about 2300 N through the stir zone pullout fracture mode.
► Spot FSW was successfully applied to dissimilar welding of BMG to Cu plate. ► Nano-sized nucleus was formed in severe deformed BMG side along the interface. ► Strip-like BMG fragments were stirred into the Cu plate close to keyhole. ► The Cu/BMG welds show high tensile strength and fractured through plug mode.
