Cr modified high-Mo Ni3Al-based single crystal high-temperature alloy and preparation method thereof

The present invention proposes a Cr-modified Ni3Al base single crystal superalloy high Mo and preparation method, the components of the Ni3Al base single crystal superalloy according to weight percentage: 5 ~ 10.5wt% of Al, 7 ~ 20wt% of Mo, 0.0005 ~ 7wt% of Cr, 0.0005 ~ 6wt% of Re, remainder is Ni. The modified high Mo-Ni3Al base single crystal superalloy cast by the γ'-Ni3Al and γ-Ni and the amount of Y-NiMo phase, a density of 7.7 ~ 8.0g / cm3, the high cost of the single crystal superalloy, long service life, excellent in oxidation corrosion, oxidation corrosion resistance at a high temperature 1100 ~ 1200 ℃, be dedicated to aero-engine turbine blades Ni3Al-based single crystal superalloy material.