Effects of High Temperature Deformation on Microstructure of Al0.1(MoNbTa0.7ZrTi)Refractory High Entropy Alloy
In order to solve the problem of rough dendritic and element segregation in as-cast refractory high entropy alloys,Al0.1(MoNbTa0.7ZrTi)refractory high entropy alloy was fabricated through a non-self-consumption vacuum arc smelting furnace,and uniaxial high-temperature compression test was carried out on the Gleeble-3500 test thermal simulator under different temperatures.The influence of deformation temperatures on microstructure of Al0.1(MoNb-Ta0.7ZrTi)refractory high entropy alloy was explored.The results indicate that Al0.1(MoNbTa0.7ZrTi)refractory high entropy alloy retains a body-centered cubic two-phase solid solution structure without phase composition transforma-tion after high-temperature deformation.The phenomenon of elemental segregation is gradually weakened with the increase of deformation temperature.Meanwhile,the morphology becomes uniform and the size of the dendrite grain is refined.
RHEAHigh Temperature DeformationBody-centered Cubic StructureDendriteSegregation
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