|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Metals: Fatigue and Fracture
||3D Printing of Metallic Glasses by Thermoplastic Forming
||Jan Schroers, mike Gibson, Nicholas Mykulowycz, Richard Fontana, Jonah Myerberg, Ric Fulop, Yet-Ming Chiang, Chris Schuh, John Hart
|On-Site Speaker (Planned)
For thermoplastics, on demand fabrication of complex shapes through fused deposition modeling (FDM) is highly advanced and widely available through inexpensive commercially available printers. The versatility and practicality for 3D printing of metals lacks significantly behind. This is essentially due to the inability to maintain metals on practical time scales at viscosities that would be ideal for processing/forming operations. Here we report on an escape of this processing property tradeoff where we use bulk metallic glasses (BMGs) and process them in their supercooled liquid region. Through direct write extrusion we show that BMGs can be printed like thermoplastics, with similar temperatures, pressures, versatility, and precision. We will discuss processing windows, joining strategies to achieve layer to layer bonding, and discuss mechanical properties including fatigue and fracture toughness characteristics of 3D printed BMG parts.
||Planned: Supplemental Proceedings volume