Research on micro vibration forming of Al-based superplastic alloy and Zr-based bulk metallic glass

Micro forming is a suited technology to manufacture very small metallic parts (several mm~mum). Al5083 superplastic alloy with very small grains has a great advantage in achieving micro deformation under low stress due to its relatively low strength at a specific high temperature range. Micro forming of Zr₆₂Cu₁₇Ni₁₃Al₈ bulk metallic glass as a candidate material for this developing process are feasible at a relatively low stress in the supercooled liquid state without any crystallization during hot deformation. In this study, the micro formability of Al5083 superplastic alloy and bulk metallic glass, Zr₆₂Cu₁₇Ni₁₃Al₈, was investigated with the specially designed micro vibration forming system using pyramid-shape, V-shape and U-shape micro die pattern. The vibration load was effected to metal flow in the micro die and improve the micro formability of Al5083 superplastic alloy and Zr₆₂Cu₁₇Ni₁₃Al₈ bulk metallic glass.