Upset Deformation of Amorphous Mg 85 Y 10 Cu 5 Alloy in an Extended Supercooled Liquid Region Effectuated by Rapid Heating

We have developed a new thermomechanical equipment in which the sequential processes consisting of rapid heating at a rate of 300 K/s, upset deformation at a speed of 50 mm/s and immediate water cooling can be performed through a computer program. This equipment is expected to enable the deformation of an amorphous alloy into various shapes by utilizing the viscous flow resulting from the extension of the supercooled liquid region caused by the rapid heating. By using the equipment, the changes in T g and T x by rapid heating were also examined for an amorphous Mg 85 Y 10 Cu 5 alloy in the cylindrical shape of 5 mm O ×10 mm