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A kind of aluminum niobium tantalum ternary alloy and preparation method thereof

A ternary alloy, niobium-tantalum technology, applied in the field of ternary alloy and preparation, can solve the problems of large element segregation, high production cost, poor composition uniformity, etc., and achieves the effect of low alloy impurities, low production cost and energy saving.

Inactive Publication Date: 2015-11-04
肖景波
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing problems mainly include: first, tantalum and niobium are refractory metals with high melting points, and it takes several times of smelting to form a eutectic when added to titanium, and the production cost is high; second, the composition uniformity is poor, and the elements in various parts of the titanium alloy ingot The segregation is large, and the deviation of different parts reaches more than 5%, which is difficult to meet the requirements of titanium alloy preparation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Prepare 100 kilograms of aluminum-niobium-tantalum ternary alloys, wherein the percentages by weight of various elements are: Al50%, Nb45%, Ta5%; the specific preparation method is as follows:

[0017] The first step is to build a square graphite brick smelting furnace with graphite bricks;

[0018] The second step is to place the built-up graphite brick smelting furnace in a drying kiln, and dry it for 12 hours at a temperature of 60°C-120°C;

[0019] The third step is to use a computer-controlled batching machine for batching. The proportioning raw materials include aluminum powder, niobium pentoxide, tantalum powder, calcium fluoride and slag; the weight parts of various raw materials are: aluminum powder 92 kg, niobium pentoxide 78 kilograms of niobium, 6 kilograms of tantalum powder, 20 kilograms of calcium fluoride, and 4 kilograms of slag; calcium fluoride is used to increase the fluidity of molten metal, which is beneficial to slagging, and slag is used to adjus...

Embodiment 2

[0024] Prepare 100 kilograms of aluminum-niobium-tantalum ternary alloys, wherein the percentages by weight of various elements are: Al40%, Nb35%, Ta25%; the specific preparation method is as follows:

[0025] The first step is to build a square graphite brick smelting furnace with graphite bricks;

[0026] The second step is to place the built-up graphite brick smelting furnace in a drying kiln, and dry it for 12 hours at a temperature of 60°C-120°C;

[0027] The third step is to use a computer-controlled batching machine for batching. The proportioning raw materials include aluminum powder, niobium pentoxide, tantalum powder, calcium fluoride and slag; the weight parts of various raw materials are: aluminum powder 80 kg, niobium pentoxide 70 kg of niobium, 26 kg of tantalum powder, 20 kg of calcium fluoride, and 4 kg of slag; calcium fluoride is used to increase the fluidity of the molten metal, which is beneficial to slagging, and slag is used to adjust the smelting tempera...

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Abstract

The invention discloses an aluminum columbium tantalum ternary alloy and a preparation method thereof. The aluminum columbium tantalum ternary alloy comprises the following elements by weight percent: 40%-50% of Al, 35%-45% of Nb, and 5%-25% of Ta. The preparation method comprises the following steps of: step one, building a square graphite brick smelting furnace with a graphite brick; step two, placing the built graphite brick smelting furnace in a dry kiln; step three, burdening by using a burdening machine controlled by a computer; step four, igniting the loaded furnace burden with a magnesium chip to carry out smelting, wherein smelting temperature is 2700-3000 DEG C, and smelting time is 1 minute; step five, finishing the alloy by using a grinding machine to remove an oxide skin on the surface of the alloy; and step six, crushing the finished alloy by using a jaw crusher. The alloy and the preparation method of the alloy have the beneficial effects that production cost is low, energy is saved, and the alloy is low in impurity content; and the melting point of the alloy is reduced to be lower than 1650 DEG C, which is capable of fully meeting the requirements for the preparation of a titanium alloy.

Description

technical field [0001] The invention relates to a ternary alloy and a preparation method, in particular to an aluminum-niobium-tantalum ternary alloy and a preparation method. Background technique [0002] Aluminum niobium tantalum alloy is a ternary master alloy composed of niobium element, tantalum element and aluminum element, which is mainly used for the preparation of titanium alloy. Titanium alloys are widely used in aerospace industry, chemical and mineral processing equipment industry, marine equipment and sports equipment manufacturing, biomedical equipment manufacturing industry, automobile manufacturing, ship manufacturing, military industry, and consumer goods manufacturing. [0003] At present, pure niobium and tantalum are used to add niobium and tantalum elements in domestic titanium alloy production. The existing problems mainly include: first, tantalum and niobium are refractory metals with high melting points, and it takes several times of smelting to form...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/00C22C30/00C22C1/02
Inventor 肖景波宋思学
Owner 肖景波
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