|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||High Entropy Alloys VIII
||Nanomolding Far and Close to Equilibrium
||Naijia Liu, Sungwoo Sohn, Jan Schroers, Arindam Raj , Guannan Liu
|On-Site Speaker (Planned)
Tremendous effort has been taken during the last two decades in the development of nano fabrication techniques for metals as they exhibit desirable functional properties. However, both bottom-up and top-down fabrication approaches are limited in some critical aspects such as material choice, geometry, and scalability. A highly versatile and widely used fabrication method is molding, which is generally associated with a soft state of a material. Nanomolding has been realized for polymers, gels, and some glasses, such as metallic glasses that soften at elevated temperatures, but not for crystalline metals that remain hard in their crystalline state. Recently, we discovered that nanomolding is possible with crystalline metals. Scaling considerations reveal that the underlying process is based on atomic diffusion down a pressure gradient. Most effective at ~0.5 Tm, such thermomechanical nanomolding (TMNM of crystalline metals) results in very high aspect ratio up to 1000 and nanowires as small as 5 nm in diameter.
||Planned: Supplemental Proceedings volume; Planned: Supplemental Proceedings volume