Corrosion-resistant zirconium-tantalum-niobium-hafnium alloy and preparation method thereof

Abstract

The invention provides a corrosion-resistant zirconium-niobium-tantalum-hafnium alloy. The chemical components of the corrosion-resistant zirconium-niobium-tantalum-hafnium alloy comprises the following compositions of, by weight, 0.1-10% of tantalum, 0.5-3% of niobium, 0.1-5% of hafnium and the balance zirconium. A preparation method of the corrosion-resistant zirconium-tantalum-niobium-hafnium alloy mainly comprises the steps that according to the ratio of zirconium alloy materials, crushed industrial-grade sponge zirconium, a zirconium-tantalum intermediate alloy and a zirconium-niobium intermediate alloy are pressed and molded, and single block electrodes are obtained; the single block electrodes are subjected to combined welding to a consumable electrode; and the consumable electrodeis subjected to vacuum consumable smelting, the voltage of vacuum consumable smelting is 33 V, the vacuum degree of vacuum consumable smelting is 5*10<-3>Pa, the current of vacuum consumable smeltingis 185 A, and the melting coefficient of vacuum consumable smelting is 0.95 kg / (kA.min), and the corrosion-resistant zirconium-niobium-tantalum alloy is obtained after smelting for 2-3 times. The preparation method is easy, the mechanical properties of the prepared corrosion-resistant zirconium-niobium-tantalum-hafnium alloy are obviously higher than a Zr-2.5Nb alloy with the high mechanical properties at present, and the corrosion resistance of the prepared corrosion-resistant zirconium-niobium-tantalum-hafnium alloy is obviously higher than that of a famous Ti6Al4V alloy.

Description

technical field [0001] The invention belongs to the technical field of materials, in particular to a zirconium-tantalum-niobium-hafnium alloy and a preparation method thereof. Background technique [0002] At present, nuclear materials and nuclear waste storage containers are made of stainless steel and titanium alloys, but there are still some problems in the high temperature resistance and corrosion resistance of stainless steel and titanium alloys, which affects the life of nuclear materials and nuclear waste storage containers. Replacement, so extending its replacement cycle has always been the eternal pursuit of the industry. Contents of the invention [0003] The object of the present invention is to provide a corrosion-resistant zirconium-niobium-tantalum-hafnium alloy with good corrosion resistance and mechanical properties and a preparation method thereof. [0004] The chemical composition of the corrosion-resistant zirconium-tantalum-niobium-hafnium alloy of the...

AI Technical Summary

Problems solved by technology

[0002] At present, nuclear materials and nuclear waste storage containers are made of stainless steel and titanium alloys, but there are still some problems in the high temperature resistance and corrosion resistance of stainless steel and titanium alloys, which affects the life of nuclear materials and nuclear waste storage containers. Replacement, so extending its replacement cycle has always been the eternal pursuit of the industry

Images