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Preparation method for flame retardant material with high strength and working temperature

A technology for working temperature and flame retardant materials, which is applied in the field of preparation of high strength and high working temperature flame retardant materials, can solve the problems of low strength, increased working temperature, and high brittleness of flame retardant titanium alloys, and achieves the effect of improving toughness

Active Publication Date: 2019-05-28
DALIAN UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the existing Ti 2 Cu 2 Al-based flame-retardant titanium alloys have the disadvantages of high brittleness and low strength, and at the same time ensure that the working temperature of the alloy is increased

Method used

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  • Preparation method for flame retardant material with high strength and working temperature
  • Preparation method for flame retardant material with high strength and working temperature
  • Preparation method for flame retardant material with high strength and working temperature

Examples

Experimental program
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Effect test

Embodiment 1

[0023] High strength Ti 2 Cu 2 The preparation method of AlGd flame-retardant alloy is prepared as follows: according to the atomic percentage, 40 parts of Ti, 40 parts of Cu, 20 parts of Al and 0.5 parts of rare earth element Gd are put into a vacuum intermediate frequency induction melting furnace, according to the following sequence Place the raw materials in order: first place the rare Gd, then place the Cu and Al sheets, and finally place the spongy Ti element on the uppermost layer of the smelting furnace, and close the side furnace door. Before smelting, vacuumize to 6.67×10 with mechanical pump and Roots pump -3Pa, then filled with high-purity argon to 100Pa. Start smelting, and control the smelting power not to be higher than 500Kw. Due to the melting principle of the intermediate frequency induction itself, the melted metal liquid will flow and stir under the action of the electromagnetic field. When the molten metal liquid is fully mixed, the alloy liquid is pou...

Embodiment 2

[0025] The difference between this embodiment and Embodiment 1 is that the inert gas is nitrogen. Others are the same as in Example 1.

Embodiment 3

[0027] The difference between this example and Example 1 is that the Φ10mm×60mm rod-shaped sample that is cooled and taken out according to the preparation method of Example 1 is subjected to wire cutting and mechanical polishing to remove surface impurities, and after cleaning with acetone, the surface alloy of the alloy is carried out with a laser. Coating a layer of Ta powder on the surface of the alloy; that is, high strength and high working temperature Ti 2 Cu 2 AlGd-Ta flame retardant alloy.

[0028] The high strength Ti prepared by embodiment 1, embodiment 2 and embodiment 3 2 Cu 2 AlGd and Ti 2 Cu 2 AlGd-Ta flame retardant alloy was subjected to metallographic microanalysis and XRD test at room temperature, the results are as follows Figure 1-5 shown. pass Figure 4 , Figure 5 and Image 6 The XRD diffraction spectrum in can find out that the high-strength Ti prepared in embodiment 1 and embodiment 2 2 Cu 2 AlGd and Ti 2 Cu 2 The position of the diffrac...

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Abstract

The invention relates to a preparation method for a flame retardant material with high strength and working temperature, in particular to a preparation method for Ti<2>Cu<2>AlGd-Ta flame retardant alloy. According to the preparation method, the Ti<2>Cu<2>AlGd-Ta flame retardant alloy with high strength and working temperature is prepared, and thoughts are developed for application of the flame retardant alloy. The Ti<2>Cu<2>AlGd-Ta flame retardant alloy is prepared according to the following steps, and the steps comprise reclaiming according to the atom percent, vacuumizing, smelting, cleaningand laser cladding, so that the Ti<2>Cu<2>AlGd-Ta flame retardant alloy with high strength and working temperature is obtained. The Ti<2>Cu<2>AlGd-Ta flame retardant alloy prepared with the preparation method has the advantages of high strength and working temperature and the like.

Description

technical field [0001] The invention relates to a novel high-strength, high-working-temperature Ti 2 Cu 2 The preparation method of AlGd-Ta flame-retardant alloy. Background technique [0002] Titanium alloy has the advantages of low density, high strength, high temperature resistance and good corrosion resistance, and has been widely used in the aerospace field. my country's titanium production ranks fourth in the world, but the output of high-end titanium materials for aerospace only accounts for about 10% of the total, which is still far behind the world's 50% level. Therefore, it is necessary to strengthen the comprehensive high-performance titanium alloy materials and Innovative research on applications to improve the application level and dosage of aerospace titanium alloys. The development of high comprehensive performance titanium alloy materials and low-cost manufacturing technology are the two driving forces to expand the application of titanium alloys. When use...

Claims

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Application Information

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IPC IPC(8): C22C30/02C22C1/02
Inventor 董桂馥苏康回顺尧陈建国
Owner DALIAN UNIVERSITY