Al-Nb-Si-Ti intermediate alloy and preparation method thereof

Abstract

The invention relates to an intermediate alloy for producing titanium alloy and a production method thereof, in particular to an Al-Nb-Si-Ti intermediate alloy and a preparation method thereof. The Al-Nb-Si-Ti intermediate alloy is characterized by comprising, by weight, 22.0% to 28.0% of niobium, 4.0% to 6.0% of silicon, 18.0% to 22.0% of titanium and the balance of aluminum. The preparation method is characterized in that metal thermo-reduction is used during the preparation process. The Al-Nb-Si-Ti intermediate alloy, a metallic compound mainly composed of niobium, silicon, titanium and aluminum, has the advantages that the brittleness is good, the breaking is easy, the production process of the titanium alloy is shortened, and the production process of the titanium alloy is easier to operate; oxide serves as raw material, the cost is low, the smelting process is stable and the forming state of the alloy is good; the alloy in the intermediate alloy form is added into sponge titanium and aluminum shot, and the segregation degree of the titanium alloy is reduced.

Description

technical field [0001] An aluminum-niobium-silicon-titanium master alloy and a preparation method thereof relate to a master alloy used for preparing titanium alloys and a preparation method thereof. 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. At present, most titanium alloy master alloys use binary alloys and ternary alloys. The master alloys produced with simple metals as raw materials have complex production processes and high costs. In order to meet the performance requirements during use, several binary alloys or ternary alloys need to be added. Therefore, it is easy to cause the instability of product performance and bring difficulties to the intermediate process of producing titanium alloy. Contents of the invention [0003] The purpose of the present invention is to provide an aluminum-niobium-silico...

AI Technical Summary

Problems solved by technology

At present, most titanium alloy master alloys use binary alloys and ternary alloys. The master alloys produced with simple metals as raw materials have complex production processes and high costs. In order to meet the performance requirements during use, several binary alloys or ternary alloys need to be added. Therefore, it is easy to cause the instability of product performance and bring difficulties to the intermediate process of producing titanium alloy.

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