| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Materials Design and Alloy Development II
|
| Presentation Title |
A-65: Isotropic Microstructure and Mechanical Properties of Additively Manufactured Ti-based Alloy |
| Author(s) |
Gwanghyo Choi, Won Seok Choi, Pyuck-Pa Choi |
| On-Site Speaker (Planned) |
Gwanghyo Choi |
| Abstract Scope |
Direct laser deposition (DLD) is a metal-based additive manufacturing (AM) technique, also referred to as laser-based direct energy deposition (DED). This manufacturing technique enables to make the physical realization of 3D model data via involving incremental layer-by-layer deposition, as opposed to subtractive manufacturing methodologies. The deposition is conducted by fusing metallic powders with a high-energy laser. We obtained non-columnar microstructure and random texture via modifying powder mixtures and processing parameters.
The ratio of powder mixtures and processing parameters were optimized by means of high-throughput laser-aided fabrication. This resulted in isotropic mechanical properties irrespective of deposition direction. The thermodynamic stability of intermetallic phases was controlled by alloying composition in order to improve the material toughness. We also investigated the influence of alloying composition on microstructure of deposited materials. This study suggests an alloy design concept for additive manufacturing and provides a viable route for tailoring microstructure and mechanical properties. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |