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AssigneeJapan Science and Technology Corporation
InventorsAkihisa Inoue, Tao Zhang
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The present invention intends to provide a production method for a highly reliable bulk metallic glass of a high cold draft of 70% or more, and better post-cold working mechanical properties than those of the metallic glass being cast. The bulk metallic glass is obtained by pressing and expanding an alloy melt of composition capable of being glassified between the cooled upper and lower molds, which are highly heat-conductive water-cooled molds, so as to apply pressure to the melt while it is solidified. Nano-particles are thus dispersed in the amorphous phase of the metallic glass, thereby obtaining a metallic glass with nano-particles dispersed in its amorphous phase. The metallic glass with nano-particles of such a high ductility is further cold worked, for example by rolling to make the final product.
A process of making highly-ductile nano-particle dispersed metallic glass providing a draft of above 70% when cold rolled, comprising the step of pressing and expanding an alloy melt of composition capable of being glassified between a lower mold and an upper mold, the lower mold and the upper mold being highly heat-conductive water-cooled molds, so that the alloy melt solidifies under pressure,
A process of making highly ductile metallic glass, comprising the steps of:
Dependencies are inferred from the claim text.