Preparation method of niobium-zirconium 10 alloy

Abstract

The invention provides a preparation method of niobium-zirconium 10 alloy. The preparation method comprises the following steps: fully mixing niobium bars and zirconium bars, putting in a vacuum melting furnace, and carrying out two-times melting; then carrying out hydrogenation and dehydrogenation treatment, finally pressing powdery alloy by using a cold isostatic press so as to obtain an ingot blank, and then putting the ingot blank on a hot isostatic press and pressing so as to obtain the ingot blank finished product. The alloy ingot blank prepared by the method is uniform in structure, so that the structure segregation problem is solved; the ingot blank is prepared by the high-temperature pressing, so that the problems of sintering deformation, shrinkage cavity and the like are solved; the rate of finished products is increased; the density of the ingot blank finished product is greatly increased; the ingot blank finished product has a very high practical value.

Description

technical field [0001] The invention belongs to the technical field of metal material preparation, and particularly relates to a preparation method of a niobium zirconium 10 alloy. Background technique [0002] Niobium-zirconium 10 alloy is an alloy composed of metal zirconium added to metal niobium. Adding zirconium to niobium can improve the strength of the alloy without affecting the plasticity and processability of the alloy. Zirconium can also improve the oxidation resistance and alkali metal resistance of the alloy. corrosive properties. Nb-Zr10 alloy is the most widely used niobium-zirconium alloy. With the increase of its application fields, the requirements for niobium-zirconium alloy are getting higher and higher. The niobium-zirconium alloy is prepared by isostatic pressing at room temperature. When using electron beam melting, because the melting points of niobium and zirconium are inconsistent, the melting point of niobium is nearly 3,000 degrees, and the melti...

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Problems solved by technology

Nb-Zr10 alloy is the most widely used niobium-zirconium alloy. With the increase of its application fields, the requirements for niobium-zirconium alloy are getting higher and higher. There are electron beam melting, hydrogenation treatment, dehydrogenation and Niobium-zirconium alloys are prepared by isostatic pressing at room temperature. When electron beam melting is used, the melting point of niobium is nearly 3,000 degrees because the melting points of niobium and zirconium are inconsistent, and the melting point of zirconium is much lower than that of niobium. The zirconium in the alloy is volatilized, resulting in uneven alloying; in addition, due to the isostatic pressing at room temperature, there are still defects such as poor grain refinement and insufficient density of the alloy, so it is necessary to improve the process