Invention Grant
- Patent Title: Electromagnetic forming of metallic glasses using a capacitive discharge and magnetic field
- Patent Title (中): 使用电容放电和磁场的金属玻璃的电磁成形
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Application No.: US13083307Application Date: 2011-04-08
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Publication No.: US08499598B2Publication Date: 2013-08-06
- Inventor: William L. Johnson , Georg Kaltenboeck , Marios D. Demetriou , Scott Roberts , Konrad Samwer
- Applicant: William L. Johnson , Georg Kaltenboeck , Marios D. Demetriou , Scott Roberts , Konrad Samwer
- Applicant Address: US CA Pasadena
- Assignee: California Institute of Technology
- Current Assignee: California Institute of Technology
- Current Assignee Address: US CA Pasadena
- Agency: Dorsey & Whitney LLP
- Main IPC: B21K17/00
- IPC: B21K17/00 ; C22C45/00

Abstract:
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 in combination with an electromagnetic force generated by the interaction of the applied current with a transverse magnetic field. 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 metal and the equilibrium melting point of the alloy in a time scale of several milliseconds or less, at which point the interaction between the electric field and the magnetic field generates a force capable of shaping the heated sample into a high quality amorphous bulk article via any number of techniques including, for example, injection molding, dynamic forging, stamp forging, and blow molding in a time scale of less than one second.
Public/Granted literature
- US20120006085A1 ELECTROMAGNETIC FORMING OF METALLIC GLASSES USING A CAPACITIVE DISCHARGE AND MAGNETIC FIELD Public/Granted day:2012-01-12
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