|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Bulk Metallic Glasses XIII
||A Novel Technique for Thermoplastically Forming Functional BMG Parts with Complex 3D Geometries and Multi-scale Features
||Phil Meagher, David J. Jarvis, Wayne Voice, David J. Browne
|On-Site Speaker (Planned)
Owing to their glassy structure and resultant softening behaviour above Tg, Bulk Metallic Glasses may be readily formed into functional parts at low temperatures and pressures, in a similar fashion to thermoplastic polymers.
However, current thermoplastic forming processes are based around etched silicon dies, capable of complex patterns in only 2 dimensions, or are adapted from polymer processes, producing simple 3D shapes via injection-moulding into a 2-part steel die.
A new patented technique is thus presented and explored, whereby polymer parts are additively manufactured with complex shape geometry, and electrolessly plated with a glassy Ni-P shell. The polymer core is leached from the shell, and a BMG is thermoplastically formed into the cavity. The produced parts yield complex and high-aspect ratio geometries not previously reported, and greatly expand the possible parts reproducible in metallic glasses.
||Planned: A print-only volume