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Refractory high entropy alloys with compositions of TiNbTa0.5Zr and TiNbTa0.5ZrAl0.2 were prepared by powder metallurgy. The alloys were hot deformed at 800 °C with a strain rate of 0.001s−1. The microstructural evolution, precipitation behavior and flow behavior at different compressive strain were investigated. Results show that the alloys are single BCC phase. The hot deformation induces precipitation...
In this work, nanocrystalline CrMnFeCoNi HEAs were prepared by powder metallurgy. It was found mechanical milling can further refine the microstructures and morphologies of the gas-atomized powder, and increase the sintering ability. The HEAs sintered from the mechanically milled powder have much finer microstructures than that from the gas-atomized powder. The original morphology and defects in both...
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