Rare earth Molybdenum alloy wire material and its preparation method
The invention relates to a rare earth Molybdenum alloy wire material and a preparation method thereof. The alloy is characterized in that the alloy contains two kinds of rare earth oxides: La2O3 and Y2O3. The weight percentage of the two rare earth oxides in the total amount of the alloy is 0.4% ≤ 1.0%, and the weight ratio of La2O3:Y2O3 is 4 ≤ 1. The preparation method of the invention is different from the traditional powder metallurgy production process, the double cone vacuum drying liquid-solid doping is carried out in the Molybdenum _ 2 stage, and then the binary rare earth doped Molybdenum powder is prepared by secondary reduction, and then the rare earth doped Molybdenum wire with specification of 0.5~0.8mm Mo-La-Y is prepared by pressing, sintering, pressure processing and the like. Compared with pure Molybdenum, the product has good high temperature performance, high recrystallizing temperature, 300 ≤ 500 ℃ higher than pure Molybdenum, high strength, high wear resistance, low plasticity, long service life and other excellent properties, so it has a wide range of applications in the machining industry.
