Patent ID: 9604269
Date: 2017-03-28
CPC Classifications: B21B,B21C,B29C,C22C

Claim:
1. A method of shaping a bulk metallic glass comprising: providing a bulk metallic glass feedstock having an inner bulk region surrounded by an initial rough outer surface region, the feedstock being heated to a temperature within thermoplastic zone of the bulk metallic glass; placing the outer region of the feedstock into contact with at least one solid surface in fluid communication with at least one shaping tool; inducing the feedstock to flow along the at least one solid surface toward the shaping tool such that the leading edge of the flow of the feedstock forms a contact-line with the solid surface, and wherein the motion of the contact-line along the solid surface induces an interfacial flow of the feedstock material from the bulk towards the solid surface, wherein within 1 to 10 nm of the contact-line a stress of 10 maintaining the flow of the feedstock along the solid surface until substantially all of the initial outer region of the feedstock at the contact-line of the alloy is replaced with a new smooth outer region formed from the interfacial flow of the bulk of the feedstock to the outer region of the feedstock prior to the feedstock coming into contact with the at least one shaping tool.