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Aluminum-titanium-molybdenum intermediate alloy and preparation method thereof

A technology of master alloy and aluminum-titanium, which is applied in the field of aluminum-titanium-molybdenum master alloy and its preparation, can solve the problems of large reaction heat effect, etc., and achieve the effects of good alloy uniformity, uniform and stable chemical composition, and convenient use.

Active Publication Date: 2019-12-13
CHENGDE TIANDA VANADIUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to prevent the possible high-density inclusion of molybdenum in titanium alloys, molybdenum is usually added in the form of master alloys. Most molybdenum elements in titanium alloys are added in the form of Mo:Al=60:40 master alloys, but mature molybdenum aluminum 60: The reaction heat effect of 40 master alloy is relatively large, and it may still contain hidden dangers of high-density inclusions of refractory molybdenum

Method used

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  • Aluminum-titanium-molybdenum intermediate alloy and preparation method thereof
  • Aluminum-titanium-molybdenum intermediate alloy and preparation method thereof

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Embodiment 1

[0040] Embodiment 1 of the present invention discloses a method for preparing an aluminum-titanium-molybdenum master alloy, and the adopted technical scheme is as follows:

[0041] An aluminum-titanium-molybdenum master alloy, the specific steps of its preparation method are as follows:

[0042] 1. Dry aluminum powder, molybdenum trioxide and calcium fluoride, drying temperature: 118°C, drying time: 20 hours;

[0043] 2. Raw material ratio: 78.00kg of aluminum, 75.75kg of molybdenum trioxide, and 9.23kg of calcium fluoride. Put the raw materials into the V-shaped mixer and mix them well to ensure sufficient contact between raw materials;

[0044] 3. Put the uniformly mixed charge into the built-up magnesia brick crucible, ignite and react, and after cooling for 6 hours, dismantle the furnace, take out the alloy ingot, and weigh it;

[0045] 4. After removing the slag layer and oxide film on the surface of the alloy ingot, crush and finish it to 5-20mm, and obtain the aluminum...

Embodiment 2

[0052] Embodiment 2 of the present invention discloses a method for preparing an aluminum-titanium-molybdenum master alloy, and the adopted technical scheme is as follows:

[0053] An aluminum-titanium-molybdenum master alloy, the specific steps of its preparation method are as follows:

[0054] 1. Dry aluminum powder, molybdenum trioxide and calcium fluoride, drying temperature: 119°C, drying time: 18 hours;

[0055] 2. Raw material ratio: aluminum 76.69kg, molybdenum trioxide 79.59kg, calcium fluoride 10.94kg, put the raw materials into the V-shaped mixer, and mix them well to ensure sufficient contact between raw materials;

[0056] 3. Put the evenly mixed charge into the built-up magnesia brick crucible, ignite and react, and after cooling for 6 hours, dismantle the furnace, take out the alloy ingot, and weigh it;

[0057] 4. After removing the slag layer and oxide film on the surface of the alloy ingot, crush and finish it to 5-20mm, and obtain the aluminum-molybdenum ma...

Embodiment 3

[0064] Embodiment 3 of the present invention discloses a method for preparing an aluminum-titanium-molybdenum master alloy, and the adopted technical scheme is as follows:

[0065] An aluminum-titanium-molybdenum master alloy, the specific steps of its preparation method are as follows:

[0066] 1. Dry aluminum powder, molybdenum trioxide and calcium fluoride, drying temperature: 120°C, drying time: 16 hours;

[0067] 2. Raw material ratio: 76.10kg of aluminum, 81.96kg of molybdenum trioxide, and 12.64kg of calcium fluoride. Put the raw materials into the V-shaped mixer and mix them well to ensure sufficient contact between raw materials;

[0068] 3. Put the evenly mixed charge into the built-up magnesia brick crucible, ignite and react, and after cooling for 6 hours, dismantle the furnace, take out the alloy ingot, and weigh it;

[0069] 4. After removing the slag layer and oxide film on the surface of the alloy ingot, crush and finish it to 5-20mm, and obtain the aluminum-m...

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Abstract

The invention discloses an aluminum-titanium-molybdenum intermediate alloy. The alloy comprises, by mass, 50.0-55.0% of molybdenum, 1.0-5.0% of titanium and the balance being aluminum. The preparationmethod of the aluminum-titanium-molybdenum intermediate alloy comprises the following steps of uniformly mixing aluminum, molybdenum trioxide and calcium fluoride, placing a mixture into a reaction crucible for aluminothermic reaction to obtain an alloy liquid, and cooling the alloy liquid to obtain an aluminum-molybdenum intermediate alloy; and uniformly mixing the aluminum-molybdenum intermediate alloy and titanium sponge, placing a mixture into a smelting crucible, performing vacuumizing, argon filling and smelting, performing refining after materials are completely melted to obtain an alloy liquid, and performing casting and cooling to obtain the aluminum-titanium-molybdenum intermediate alloy. According to the aluminum-titanium-molybdenum intermediate alloy and the preparation methodthereof, the aluminum-titanium-molybdenum intermediate alloy is uniform in component, small in segregation and low in impurity content.

Description

technical field [0001] The invention relates to the technical field of metal materials, in particular to an aluminum-titanium-molybdenum master alloy and a preparation method thereof. Background technique [0002] As important strategic materials, 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 overall process performance, and have gradually become irreplaceable in the field of modern industrial science and technology. The materials are 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, etc. [0003] With the continuous development of the titanium alloy industry, more and more metals are added to the titanium alloy in the form of intermediate alloys, whic...

Claims

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Application Information

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IPC IPC(8): C22C27/04C22B5/04C22C1/02C22C1/03
CPCC22B5/04C22C1/02C22C1/03C22C27/04
Inventor 王志军刘强孙鑫段善博刘志彬纪海龙
Owner CHENGDE TIANDA VANADIUM IND
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