A corrosion resistant zirconium niobium tantalum hafnium alloy, the chemical composition includes the following weight percentage components: tantalum 0.1 ~ 10%, niobium 0.5 ~ 3%, hafnium 0.1 ~ 5%, the allowance is zirconium; The preparation method of the above corrosion resistant zirconium tantalum niobium nifnium alloy is as follows: according to the proportion of zirconium alloy materials, the crushed industrial grade zirconium, zirconium tantalum and zirconium niobium intermediate alloys are pressed into shape, and a single electrode is obtained; Welding a single electrode into a consumable electrode; The voltage of vacuum consumable smelting was 33V, the vacuum consumable smelting vacuum was 5 10-3Pa, the current of vacuum consumable smelting was 185A, the melting coefficient of vacuum consumable smelting was 0.95kg/(kA·min), and the corrosion resistant zirconium niobium-tantalum alloy was smelted for 2-3 times. The preparation method of the invention is simple, and the mechanical properties of the corrosion resistant zirconium niobium tantalum hafnium alloy prepared by the invention are obviously higher than the current Zr-2.5nb alloy having higher mechanical properties. The corrosion resistance of Ti6Al4V alloy is higher than that of other famous alloys. There are still some problems in the high temperature resistance and corrosion resistance of stainless steel and titanium alloy, which affect the life of nuclear materials and nuclear waste storage containers and need to be replaced regularly. Therefore, extending the replacement period has always been the eternal pursuit of this industry.
(1) according to the proportion of zirconium alloy materials, the crushed industrial-grade sponge zirconium, zirconium tantalum and zirconium niobium intermediate alloys are pressed into shape to obtain a single electrode;
(2) weld the single electrode obtained in step (1) into a consumable electrode;
(3) the consumable electrode obtained in the above steps (2) was processed by vacuum consumable smelting, the voltage of vacuum consumable smelting was 33V, the vacuum degree of vacuum consumable smelting was 5 10-3pa, the current of vacuum consumable smelting was 185A, the melting coefficient of vacuum consumable smelting was 0.95kg/(kA·min), and the corrosion resistant zirconium niobium-tantalum alloy was obtained after smelting for 2-3 times.
Zr belongs to IVB element. Due to its small neutron absorption cross-section, excellent radiation resistance, corrosion resistance, high temperature resistance, oxidation resistance, low density, small thermal expansion coefficient and good mechanical processing performance, Zr alloy is used as structural material and corrosion resistant material in nuclear and chemical industry. It has positive significance to prepare zirconium with better corrosion resistance and high strength hardness.
