Preparation method of nickel niobium alloy

Abstract

The invention discloses a preparation method of a nickel niobium alloy, and relates to a preparation method for producing an intermediate alloy of a titanium alloy. The preparation method is characterized in that high purity nickel and high purity niobium are used as raw materials in the preparation process of the nickel niobium alloy; and the nickel niobium alloy is obtained by smelting through a medium-frequency vacuum induction furnace. Compared with the prior art, the preparation method has the following benefits: (1) the alloy smelting method effectively controls the alloy components, eliminates the influence of the aluminum element on the alloy performance, and guarantees the alloy quality characteristics; (2) the components are stable; the intermediate alloy is produced with the metal oxide as the raw material by using the metallothermics; the alloy is weak in uniformity, higher in segregation degree and bad in compactness; and the produced alloy is stable in uniformity and excellent in compactness; and (3) the alloy smelting method effectively eliminates the influence of the aluminum element on the alloy components, solves the defects of easy alloy segregation and weak compactness, improves the alloy quality, is convenient for the titanium alloy production and operation, and is convenient for the titanium alloy preparation.

Description

technical field [0001] The invention relates to a preparation method of a nickel-niobium alloy, which relates to a preparation method of an intermediate nickel-niobium alloy used for producing high-quality aerospace-grade titanium alloys. Background technique [0002] Titanium alloys are widely used in military industry, aerospace industry and civilian industry, and master alloys are important raw materials for the production of titanium alloys. Nickel-based alloys have the characteristics of high temperature resistance and corrosion resistance, and are often used in the manufacture of aircraft jet engine blades, and play an important role in corrosion-resistant applications in manufacturing. [0003] At present, there are many kinds of production methods of nickel-niobium alloy in China, most of which adopt metallothermic reduction method. Because most of metallothermic reduction methods use aluminum as reducing agent, some aluminum elements inevitably exist in nickel-niobi...

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Problems solved by technology

[0003] At present, there are many kinds of production methods of nickel-niobium alloy in China, most of which adopt metallothermic reduction method. Because most of metallothermic reduction methods use aluminum as reducing agent, some aluminum elements inevitably exist in nickel-niobium alloy, which undoubtedly reduces The purity of the alloy affects the performance of the alloy. At the same time, the metallothermic reduction method is naturally cooled in the air in most cases, and the cooling time is long, resulting in poor uniformity and compactness of the smelted alloy.

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