FORMING OF METALLIC GLASS BY RAPID CAPACITOR DISCHARGE FORGING
摘要
A forging apparatus and method of uniformly heating, rheologically softening, and thermoplastically forming metallic glasses rapidly into a net shape using a rapid capacitor discharge forming (RCDF) tool are provided. The RCDF method utilizes the discharge of electrical energy stored in a capacitor to uniformly and rapidly heat a sample or charge of metallic glass alloy to a predetermined "process temperature" between the glass transition temperature of the amorphous material and the equilibrium melting point of the alloy in a time scale of several milliseconds or less. Once the sample is uniformly heated such that the entire sample block has a sufficiently low process viscosity it may be shaped into high quality amorphous bulk articles via forging in a time frame of less than 1 second.
申请公布号
EP2627793(A2)
申请公布日期
2013.08.21
申请号
EP20110833426
申请日期
2011.10.13
申请人
CALIFORNIA INSTITUTE OF TECHNOLOGY
发明人
KALTENBOECK, GEORG;SCHRAMM, JOSEPH, P.;DEMETRIOU, MARIOS, D.;JOHNSON, WILLIAM, L.