Vanadium-aluminum-iron intermediate alloy and preparation method thereof

Abstract

The invention provides a vanadium-aluminum-iron intermediate alloy and a preparation method thereof, and relates to the technical field of metal materials. The preparation method of the vanadium-aluminum-iron intermediate alloy comprises the following steps that aluminum, vanadium pentoxide and iron are mixed to obtain a mixed material; the mixed material is subjected to vacuum aluminothermic reaction to obtain alloy liquid; and the alloy liquid is cooled to obtain the vanadium-aluminum-iron intermediate alloy. According to the vanadium-aluminum-iron intermediate alloy and the preparation method thereof, aluminum, vanadium pentoxide and iron serve as raw material, the vanadium-aluminum-iron intermediate alloy is prepared through a vacuum aluminothermic reduction method, the prepared vanadium-aluminum-iron intermediate alloy is high in purity, compact, uniform in component and low in gas-phase impurity content, the defects of element segregation, poor compatibility, high gas-phase impurity content and the like in titanium alloy are effectively overcome, and titanium alloy production and operation are facilitated.

Description

technical field [0001] The invention relates to the technical field of metal materials, in particular to a vanadium-aluminum-iron master 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., and have good comprehensive process performance. They have gradually become irreplaceable materials in the field of modern industrial science and technology. Aerospace industry, ship manufacturing industry, chemical industry, electric power industry, metallurgical industry, textile industry, food industry, medical industry, vehicle manufacturing industry, sports and leisure industry and other fields have a wide range of applications. [0003] With the continuous development of the titanium alloy industry, more and more metals are added to titanium alloys in the form of master alloys, which avoids the t...

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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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