About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
Bulk Metallic Glasses XVII
|
Presentation Title |
Rapid Discharge Forming of Metallic Glasses: A Novel Metals Manufacturing Platform |
Author(s) |
Marios D. Demetriou, Kyung Hee Han, Jong Hyun Na, Maximilien E Launey, William L Johnson |
On-Site Speaker (Planned) |
Marios D. Demetriou |
Abstract Scope |
Injection molding metals to net shapes like plastics has been an ambition of technologists for decades. Crystalline metals don’t soften gradually and continuously like plastics but abruptly collapse to a fluid liquid upon melting bypassing the viscous states that enable “thermoplastic” processing. “Metal Injection Molding” (MIM) is currently performed using powder mixtures of metal and plastic binder to mold “green” parts that are subsequently sintered to size following debinding. MIM is rapidly gaining prominence in metals manufacturing despite its elaborate and expensive multistep process. By virtue of being glasses, metallic glasses soften above the glass transition enabling “true” thermoplastic net shaping. Rapid Discharge Forming (RDF), where an electrical discharge uniformly heats metallic glass to the viscous “thermoplastic” states rapidly enough bypassing crystallization, is emerging as an effective means for injection molding metallic glasses. In this presentation, efforts to commercialize RDF injection molding and progress in part manufacturing will be discussed. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |