About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing of Refractory Metallic Materials
|
| Presentation Title |
Additive Manufacturing of Ti₄₀Zr₄₀Mo₁₀Al₁₀ Light-weight Complex Concentrated Alloys via Synergistic Approach of Composition Tuning and Process Parameter Tailoring |
| Author(s) |
Jitesh Kumar, Shashank Sharma, Dussa Saikumar, Yuqi Jin, Teng Yang, Rajarshi Banerjee, Narendra Dahotre |
| On-Site Speaker (Planned) |
Jitesh Kumar |
| Abstract Scope |
This study investigates the challenges in fabricating dense, crack-free Ti₄₀Zr₄₀Mo₁₀Al₁₀ (at%) lightweight CCAs via Laser DED using elemental blends. During AM fabrication of Ti₄₀Zr₄₀Mo₁₀Al₁₀ there is appreciable loss of Al (3 to 5 at %) through vaporization—stemming from the large melting point disparity between Al (660 °C) and Mo (2623 °C)—induces significant porosity and cracking. In-situ femtosecond Laser Induced Breakdown Spectroscopy (LIBS) analysis guided the compensation of Al in the precursor blend, facilitating near-target composition (10–11 at % Al). The detailed structural characterization confirms crack mitigation and fabrication of a dense sample (relative density > 99 %) with the compositional tolerance close to the targeted composition. Furthermore, CALPHAD-based thermophysical predictions integrated with FE-based multilayer/multitrack thermokinetic modeling elucidated phase evolution and thermal gradients during AM. This integrated approach underscores the criticality of precise compositional control and process modeling in fabricating complex CCAs with tailored microstructure and performance. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, High-Entropy Alloys, Titanium |