|About this Abstract
||1st World Congress on High Entropy Alloys (HEA 2019)
||High Entropy Alloys 2019
||Synthesizing Refractory High Entropy Alloys (HEAs) of 3rd Generation by Selective Electron Beam Melting (SEBM) Using Elemental Powders Blend
||Alexander Katz-Demyanetz, Vladimir V. Popov, Eyal Eshed, Aleksey Kovalevsky, Natalya Larianovsky, Andrey Koptyug, Menachem Bamberger
|On-Site Speaker (Planned)
Despite the high potential of HEAs, their implementation is complicated because of necessity to use vacuum arc melting, which may be difficult because of the difference in melting points and vapor pressures of the alloying elements at high temperatures. Furthermore, the castability of such liquid blend in insufficient to obtain a homogeneous material. The alternative trials to synthesize refractory HEAs is Additive Manufacturing thermal routes like EBM and SLM, at which pre-alloyed powders made by powder metallurgy route are used as raw material. The current work reports on synthesizing Al0.5CrMoNbTa0.5 alloy by SEBM from elemental powders blend. Samples characterization was done by SEM/EPMA, XRD. Though no completely homogeneous microstructure was achieved, the as-printed material was composed of the zones with two multi-component solid solutions, confirming in situ alloying. The main conclusion is that the production of Al0.5CrMoNbTa0.5 alloy from elemental powders blend using SEBM technique is achievable.