发明授权
- 专利标题: Sheet forming of metallic glass by rapid capacitor discharge
- 专利标题(中): 通过快速电容放电来成形金属玻璃
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申请号: US14054545申请日: 2013-10-15
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公开(公告)号: US08961716B2公开(公告)日: 2015-02-24
- 发明人: William L. Johnson , Marios D. Demetriou , Joseph P. Schramm
- 申请人: California Institute of Technology
- 申请人地址: US CA Pasadena
- 专利权人: California Institute of Technology
- 当前专利权人: California Institute of Technology
- 当前专利权人地址: US CA Pasadena
- 代理机构: Polsinelli PC
- 主分类号: C22F1/10
- IPC分类号: C22F1/10 ; B21C29/00 ; B21C37/02 ; B21J1/00 ; C21D1/34 ; C21D1/38 ; C21D1/40 ; C21D7/13 ; C22C1/00 ; C22C45/00 ; C22F1/00 ; B21B15/00 ; B23K15/00
摘要:
An 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 any number of techniques including, for example, injection molding, dynamic forging, stamp forging, sheet forming, and blow molding in a time frame of less than 1 second.
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