Aluminum-vanadium-niobium intermediate alloy, aluminum-vanadium-niobium-titanium intermediate alloy and preparation methods of aluminum-vanadium-niobium intermediate alloy and aluminum-vanadium-niobium-titanium intermediate alloy

A master alloy, aluminum vanadium technology, applied in the field of aluminum vanadium niobium master alloy, aluminum vanadium niobium titanium master alloy and its preparation, can solve the problems of product structure, influence of mechanical performance reliability, complex alloy ratio, segregation, inclusion and so on

Inactive Publication Date: 2021-09-07
CHENGDE TIANDA VANADIUM IND
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In order to meet the requirements of the element content in the alloy and the performance requirements during use, it is necessary to add a variety of binary alloys, which leads to complex alloy ratios in the production process of titanium alloys, and easily causes segregation, inclusions, etc. of titanium alloy ingots. Metallurgical defects, the existence of these defects will have a serious impact on the structure, mechanical properties and reliability of subsequent use of the product

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  • Aluminum-vanadium-niobium intermediate alloy, aluminum-vanadium-niobium-titanium intermediate alloy and preparation methods of aluminum-vanadium-niobium intermediate alloy and aluminum-vanadium-niobium-titanium intermediate alloy
  • Aluminum-vanadium-niobium intermediate alloy, aluminum-vanadium-niobium-titanium intermediate alloy and preparation methods of aluminum-vanadium-niobium intermediate alloy and aluminum-vanadium-niobium-titanium intermediate alloy
  • Aluminum-vanadium-niobium intermediate alloy, aluminum-vanadium-niobium-titanium intermediate alloy and preparation methods of aluminum-vanadium-niobium intermediate alloy and aluminum-vanadium-niobium-titanium intermediate alloy

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preparation example Construction

[0030] The present invention provides a method for preparing the aluminum vanadium niobium master alloy described in the above technical solution, comprising the following steps:

[0031] Mix vanadium pentoxide, niobium pentoxide and aluminum for aluminothermic reaction, and cool to obtain aluminum vanadium niobium primary alloy;

[0032] The aluminum vanadium niobium primary alloy and aluminum are subjected to vacuum induction melting and cooled to obtain the aluminum vanadium niobium master alloy.

[0033] The invention mixes vanadium pentoxide, niobium pentoxide and aluminum for aluminothermic reaction, and obtains aluminum vanadium niobium primary alloy after cooling.

[0034] In the present invention, the mass ratio of vanadium pentoxide, niobium pentoxide and aluminum is preferably (1.561-1.673): (0.179-0.268): (0.980-1.020), more preferably (1.584-1.651): (0.197-0.250): (0.988-1.012), most preferably 1.628:0.232:0.996.

[0035] In the present invention, the vanadium p...

Embodiment 1

[0085] 1. Aluminum thermal smelting process

[0086] (1) Dry the aluminum powder, niobium pentoxide and vanadium pentoxide at a temperature of 120° C. for 12 hours.

[0087] (2) Raw material ratio: aluminum powder 87.60kg, niobium pentoxide 14.30kg, vanadium pentoxide 124.90kg; put the raw materials into a V-shaped mixer, the mixing rate is 140r / min, and the mixing time is 2min, ensuring All raw materials are mixed evenly and fully contacted.

[0088] (3) Put the uniformly mixed charge into the sintered corundum crucible, ignite the reaction, after the reaction is completed, cool with the furnace for 12 hours, remove the crucible, take out the alloy ingot, and weigh it.

[0089] (4) After removing the slag layer and oxide film on the surface of the alloy ingot, crushing and finishing are carried out, and after magnetic separation and manual selection, the primary alloy of aluminum, vanadium and niobium is obtained, and the chemical composition of the obtained primary alloy is...

Embodiment 2

[0097] 1. Aluminum thermal smelting process

[0098] (1) Dry the aluminum powder, niobium pentoxide and vanadium pentoxide at a temperature of 120° C. for 12 hours.

[0099] (2) Raw material ratio: 80.97kg of aluminum powder, 15.73kg of niobium pentoxide, and 126.69kg of vanadium pentoxide; put the raw materials into a V-type mixer, the mixing rate is 130r / min, and the mixing time is 3min, ensuring All raw materials are mixed evenly and fully contacted.

[0100] (3) Put the uniformly mixed charge into the sintered corundum crucible, ignite the reaction, after the reaction is completed, cool with the furnace for 12 hours, remove the crucible, take out the alloy ingot, and weigh it.

[0101] (4) After removing the slag layer and oxide film on the surface of the alloy ingot, crushing and finishing are carried out, and after magnetic separation and manual selection, the primary alloy of aluminum, vanadium and niobium is obtained, and the chemical composition of the obtained prima...

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Abstract

The invention provides an aluminum-vanadium-niobium intermediate alloy, an aluminum-vanadium-niobium-titanium intermediate alloy and preparation methods of the aluminum-vanadium-niobium intermediate alloy and the aluminum-vanadium-niobium-titanium intermediate alloy, and belongs to the field of metal materials. The invention provides the aluminum-vanadium-niobium intermediate alloy and the aluminum-vanadium-niobium-titanium intermediate alloy. Aluminum is the most important strengthening element in titanium alloy, has a remarkable solid solution strengthening effect and can remarkably improve the high-temperature mechanical performance of the titanium alloy, and meanwhile, the aluminum also has a relatively low density and is beneficial for improving the specific strength of the titanium alloy; vanadium has the effect of strengthening the titanium alloy, and when a certain proportion of vanadium is added into the titanium alloy, the alloy has good ductility, corrosion resistance, formability and other excellent performance. Niobium can be subjected to infinite solid solution in beta titanium, the solid solution strengthening effect is achieved, when the alloy strength is improved, the thermal stability of the alloy can also be effectively improved, and good plasticity is maintained. According to the invention, by controlling components and content, the aluminum-vanadium-niobium and aluminum-vanadium-niobium-titanium intermediate alloys are uniform in component and small in segregation, and during titanium alloy smelting, titanium alloy component homogenization is facilitated, and component segregation is prevented.

Description

technical field [0001] The invention relates to the technical field of metal materials, in particular to an aluminum-vanadium-niobium master alloy, an aluminum-vanadium-niobium-titanium 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C27/02C22C1/03C22B5/04C22B34/22C22B34/24C22C14/00
CPCC22C27/025C22C1/03C22B5/04C22B34/22C22B34/24C22C14/00
Inventor 王志军刘强刘志彬孙鑫何建成纪海龙段善博王东华
Owner CHENGDE TIANDA VANADIUM IND
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