| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Process-induced Microstructures and Defects
|
| Presentation Title |
Custom-Post-Process Heat Treatments to Eliminate Columnar Microstructure in W-DED Ti-6Al-4V |
| Author(s) |
Hannah Sims, Jonathan Pegues, Shaun Whetten, LaRico Treadwell, Andrew Kustas |
| On-Site Speaker (Planned) |
Hannah Sims |
| Abstract Scope |
Wire-based Direct Energy Deposition (W-DED) processes are attractive additive manufacturing (AM) processes to replace conventional casting and forging methods of Ti-6Al-4V due to their net shaping capabilities and low machining waste. Two common W-DED processes used to manufacture Ti-6Al-4V are wire arc additive manufacturing (WAAM) and electron beam additive manufacturing (EBAM). W-DED Ti-6Al-4V produced by both WAAM and EBAM often exhibits continuous alpha along large columnar beta grains which can induce severe anisotropy in the associated mechanical properties. In this work, we explored novel post-process heat treatments, including HIP, to understand their effects on tensile properties and associated anisotropy of WAAM and EBAM Ti-6Al-4V. A high throughput tensile testing procedure was utilized to generate statistically relevant data sets related to each specific heat treatment and sample orientation. Results are discussed in the context of microstructural evolution and the resulting fracture behavior for each condition as compared to conventionally processed Ti-6Al-4V. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Titanium, |