The invention relates to a high-entropy
alloy material and a method for preparing the same. The component of the high-entropy
alloy material is AlCoCrFeNiTix, wherein x represents a
molar ratio, and the value range is between 0.1-0.4. The method for preparing the material comprises: preparing raw materials, adopting the
alloy smelting raw materials including Al, Co, Cr, Fe, Ni and Ti, and accurately weighing and proportioning according to the
molar ratio; then, purifying
oxide on a
metal surface; putting the prepared raw materials into a tank in a water-cooling
copper-formed mold
smelting pool, vacuumizing, filling
argon, controlling
smelting current to be at about 250
ampere and smelting time for 30-60 seconds, turning an alloy block after alloys are fully mixed, putting an alloy
ingot into a tank of a water-cooling
copper-formed mold, regulating the smelting current, opening a suction
casting air suction valve after the alloys are uniformly smelted, utilizing the negative pressure in a pump for suction
casting, and taking out the alloy
ingot after an alloy mould is cooled. Compared with the conventional crystalline state alloy, the high-entropy alloy material has relative high
thermal stability,
hardness, yield strength, breaking tenacity, plastic deformation and
work hardening capacity.