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Titanium-aluminium alloy material and preparation technology thereof

A technology of titanium-aluminum alloy and preparation process, which is applied in the field of titanium-aluminum alloy material and its preparation, can solve the problems affecting the function and quality of titanium alloy, and achieve the effect of excellent corrosion resistance and strong resistance

Active Publication Date: 2015-04-29
上海腾辉有色铸造有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Titanium alloys are easily mixed with impurities such as oxygen and nitrogen during processing, which affects the function and quality of titanium alloys.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A titanium-aluminum alloy material and a preparation process thereof, comprising: Al7%, Cr0.1%, Mn0.5%, Nb1.2%, Mo0.15%, W5%, Bi0.75%, Dy0. 05%, Gd0.05%, Er0.45%, Ce4%, Zr2.5%, Sn3.5%, and the rest is Ti.

[0019] A method for preparing a titanium-aluminum alloy material, comprising the following steps:

[0020] 1) extract Al7%, Cr0.1%, Mn0.5%, Nb1.2%, Mo0.15%, W5%, Bi0.75% according to weight percentage content, wherein W is metal powder, and other materials are metal ingots, Put the raw materials into the smelting furnace one by one, keep the temperature in the smelting furnace at 2300°C-2500°C, and refine the metal. The refining time is 10-12 minutes. After the refining is completed, carry out electromagnetic stirring for 3 times, and let it stand for 5 minutes. Remove the impurities on the surface of the furnace for use;

[0021] 2) Extract Dy0.05%, Gd0.05%, Er0.45%, Ce4%, Zr2.5%, Sn3.5% according to the weight percentage content and put them into the vacuum arc ...

Embodiment 2

[0025] A titanium-aluminum alloy material and its preparation process, containing: Al7.2%, Cr0.18%, Mn0.65%, Nb1.3%, Mo0.22%, W5.5%, Bi0.83 %, Dy0.07%, Gd0.1%, Er0.38%, Ce3.5%, Zr2.25%, Sn3.25%, and the rest is Ti.

[0026] A method for preparing a titanium-aluminum alloy material, comprising the following steps:

[0027] 1) Extract l7.2%, Cr0.18%, Mn0.65%, Nb1.3%, Mo0.22%, W5.5%, Bi0.83% according to the weight percentage content, wherein W is metal powder, and the rest materials For metal ingots, put the raw materials into the smelting furnace in turn, keep the temperature in the smelting furnace at 2300°C-2500°C, and refine the metal. The refining time is 10-12 minutes. After the refining is completed, carry out electromagnetic stirring for 3 times, static After 5 minutes, remove the impurities on the surface of the furnace and set aside;

[0028] 2) Extract Dy0.07%, Gd0.1%, Er0.38%, Ce3.5%, Zr2.25%, Sn3.25% according to the weight percentage content and put them into the...

Embodiment 3

[0032] A titanium-aluminum alloy material and its preparation process, containing: Al7.5%, Cr0.25%, Mn0.8%, Nb1.4%, Mo0.3%, W6%, Bi0.9%, Dy0.08%, Gd0.15%, Er0.45%, Ce4%, Zr2.5%, Sn3.5%, and the rest is Ti.

[0033]A method for preparing a titanium-aluminum alloy material, comprising the following steps:

[0034] 1) Extract Al7.5%, Cr0.25%, Mn0.8%, Nb1.4%, Mo0.3%, W6%, Bi0.9% according to weight percentage content, wherein W is metal powder, and other materials are metal Ingots, put the raw materials into the smelting furnace in turn, keep the temperature in the smelting furnace at 2300°C-2500°C, and refine the metal. The refining time is 10-12 minutes. Minutes later, the impurities on the surface of the furnace are removed and set aside;

[0035] 2) Extract Dy0.08%, Gd0.15%, Er0.45%, Ce4%, Zr2.5%, Sn3.5% according to the weight percentage content and put them into the vacuum arc furnace together with Ti, keep the vacuum arc furnace sealed , heated at a vacuum of 3pa-10pa an...

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Abstract

The invention provides a titanium-aluminium alloy material and the preparation technology thereof. The titanium-aluminium alloy material is characterized by comprising the following components in percent by weight: 7 to 7.5 percent of Al, 0.1 to 0.25 percent of Cr, 0.5 to 0.8 percent of Mn, 1.2 to 1.4 percent of Nb, 0.15 to 0.3 percent of Mo, 5 to 6 percent of W, 0.75 to 0.9 percent of Bi, 0.05 to 0.08 percent of Dy, 0.05 to 0.15 percent of Gd, 0.3 to 0.45 percent of Er, 3 to 4 percent of Ce, 2 to 2.5 percent of Zr, 3 to 3.5 percent of Sn, and the balance of Ti; the titanium-aluminium alloy material is free from nitrogen-oxygen impurities, has the advantages of good corrosion resistance, high intensity, good low-temperature performance, small heat conduction elasticity and the like, is suitable for manufacturing components of air compressors for airplane motors, and structural parts of rockets, guided missiles and high speed crafts next.

Description

technical field [0001] The invention relates to a titanium-aluminum alloy material and a preparation process thereof. Background technique [0002] Titanium is an important structural metal developed in the 1950s. Titanium alloys are widely used in various fields because of their high strength, good corrosion resistance, and high heat resistance. Many countries in the world have recognized titanium alloys. In the 1950s and 1960s, it mainly developed high-temperature titanium alloys for aero-engines and structural titanium alloys for airframes. In the 1970s, a batch of resistant titanium alloys were developed. Corrosion-resistant titanium alloys, since the 1980s, corrosion-resistant titanium alloys and high-strength titanium alloys have been further developed. [0003] Titanium alloy is an alloy composed of other elements added to titanium alloy products based on titanium. Titanium has two kinds of heterogeneous crystals: below 882°C, it is close-packed hexagonal structure ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00C22C1/02C22F1/18
Inventor 农彩丽
Owner 上海腾辉有色铸造有限公司
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