A kind of vanadium-aluminum-iron master alloy and preparation method thereof

Abstract

The invention provides a vanadium-aluminum-iron master alloy and a preparation method thereof, which relate to the technical field of metal materials. The preparation method of the vanadium-aluminum-iron master alloy provided by the present invention comprises the following steps: mixing aluminum, vanadium pentoxide and iron to obtain a mixed material; subjecting the mixed material to vacuum aluminothermic reaction to obtain an alloy liquid; The liquid is cooled to obtain a vanadium-aluminum-iron master alloy. The invention uses aluminum, vanadium pentoxide and iron as raw materials and adopts vacuum aluminothermic reduction method to prepare vanadium-aluminum-iron master alloy. The prepared vanadium-aluminum-iron master alloy has high purity, compact alloy, uniform composition and low gas phase impurity content, effectively solving the problem of Defects such as element segregation, poor compatibility, and high content of gas phase impurities in titanium alloys are eliminated, and the production and operation of titanium alloys are facilitated.

Description

technical field [0001] The invention relates to the technical field of metal materials, in particular to a vanadium-aluminum-iron intermediate alloy and a preparation method thereof. Background technique [0002] Titanium and its alloys have excellent properties, such as corrosion resistance, high temperature resistance, low temperature resistance, high strength, non-magnetic, etc. At the same time, they have good comprehensive process performance, and have gradually become irreplaceable materials in the field of modern industrial science and technology. It is widely used in aerospace industry, shipbuilding industry, chemical industry, electric power industry, metallurgical industry, textile industry, food industry, medical industry, vehicle manufacturing industry, sports and leisure industry and other fields. [0003] With the continuous development of the titanium alloy industry, more and more metals have begun to be added to titanium alloys in the form of master alloys, w...

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Problems solved by technology

Vanadium-aluminum-iron alloy is a ternary alloy. At present, the preparation of vanadium-aluminum-iron master alloy usually adopts an out-of-furnace method and a two-step method. For example, CN200310119074.9 discloses a vanadium-aluminum-iron master alloy and its preparation method. Vanadium pentoxide, aluminum, iron, calcium fluoride and the slag produced by the smelting of vanadium-aluminum-ferroalloy are used as raw materials, and the vanadium-aluminum-ferroalloy is prepared by the ignition method outside the furnace. This method has the advantages of simple equipment, convenient operation and less investment. The vanadium-aluminum-iron alloy prepared by the method has poor uniformity, high impurity content and serious inclusions inside the alloy; CN201210125129.6 discloses a vanadium-aluminum-iron master alloy and a preparation method thereof. Al and Fe are added in two steps. In the first step, vanadium pentoxide, aluminum, iron, calcium fluoride and slag are used as raw materials, and the vanadium-aluminum-iron primary alloy is prepared by the ignition method outside the furnace. In the second step, aluminum, iron, and The vanadium-aluminum-iron primary alloy is vacuum smelted in a vacuum melting furnace as a raw material to obtain the vanadium-aluminum-iron master alloy. The vanadium-aluminum-iron master alloy prepared by this method has high purity, uniformity and density, but this method increases the process and equipment , cost increase, production cycle increase

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