The invention discloses a high-
corrosion-resistance non-equimolar high-entropy
alloy and a preparation method thereof. The NiFeCrRuMoW high-entropy
alloy comprises the following components: Ni, Fe, Cr, Ru, Mo and W. Mechanical alloying is implemented through mechanical
powder mixing and ball milling, then the NiFeCrRuMoW
corrosion-resistant high-entropy
alloy material with good comprehensive performance is prepared through
spark plasma sintering, and the NiFeCrRuMoW
corrosion-resistant high-entropy alloy material is uniform in structure and good in strength,
hardness and other performance. In order to explore the optimal preparation conditions, an orthogonal experimental method is selected to carry out three-factor three-level variable design, and the factors are ball milling time,
sintering pressure and
sintering temperature. According to the finally prepared optimal alloy, the
compressive strength is higher than 2, 000 Mpa, the yield strength is higher than 1, 100 Mpa, the
hardness is larger than 550 HV, the corrosion rate is only 0.1107 mm / year, and the corrosion resistance is extremely excellent. In addition, the alloy is simple in preparation process and easy for industrial production, and can be used as a
structural material of a
nuclear waste storage container in the
nuclear power industry.