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Brazing method for dispersion strengthening of intermetallic compound particles by welding aluminum matrix composites and titanium alloys

A particle dispersion strengthening, aluminum matrix composite material technology, applied in welding/welding/cutting items, welding equipment, metal processing equipment, etc., can solve the problem of low joint performance, achieve high welding efficiency, flexible application position, selectable wide range of effects

Active Publication Date: 2021-07-27
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention solves the technical problem of low performance of joints obtained in the existing welding method of aluminum-based composite materials and titanium alloys, and provides a brazing method for welding aluminum-based composite materials and titanium alloys to strengthen the dispersion of intermetallic compound particles in the weld

Method used

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  • Brazing method for dispersion strengthening of intermetallic compound particles by welding aluminum matrix composites and titanium alloys
  • Brazing method for dispersion strengthening of intermetallic compound particles by welding aluminum matrix composites and titanium alloys
  • Brazing method for dispersion strengthening of intermetallic compound particles by welding aluminum matrix composites and titanium alloys

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specific Embodiment approach 1

[0034] Specific implementation mode 1: In this implementation mode, the brazing method of welding aluminum-based composite materials and titanium alloys to make the dispersion strengthening of intermetallic compound particles in the weld seam is specifically carried out according to the following steps:

[0035] 1. Put the pure aluminum ingot into the solder tank, heat and melt to obtain the modified melt;

[0036] 2. Immerse the titanium alloy in the modified melt obtained in step 1, apply ultrasonic waves to modify the surface of the titanium alloy, then keep it warm for 10 minutes to 1 hour, take it out, cool it in air, and perform surface grinding to obtain a titanium alloy with a modified layer;

[0037] 3. Put brazing filler metal between the aluminum matrix composite material and the titanium alloy with the modified layer obtained in step 2, and carry out ultrasonic welding to complete the method.

[0038] In the second step of this embodiment, the acoustic cavitation o...

specific Embodiment approach 2

[0039] Embodiment 2: The difference between this embodiment and Embodiment 1 is that in step 1, the pure aluminum ingot is melted by heating to 700-720°C. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0040] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that the titanium alloy in step two is industrial pure titanium TA1-4, TA15 titanium alloy, TC1-26 titanium alloy, TA5-28 titanium alloy or TB2- 11 titanium alloy. Others are the same as in the first or second embodiment.

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Abstract

The invention relates to a brazing method for welding an aluminum-based composite material and a titanium alloy to strengthen the dispersion of intermetallic compound particles in the weld, and the invention relates to the field of brazing of an aluminum-based composite material and a titanium alloy. The invention aims to solve the technical problem of low performance of the obtained joint in the existing welding method of aluminum-based composite material and titanium alloy. Methods: 1. melting pure aluminum ingot; 2. modifying the surface of titanium alloy; 3. ultrasonic welding. The invention can significantly reduce the welding temperature of the titanium alloy and the aluminum-based composite material, effectively prevent the base metal from being softened by heat during the welding process, and prevent the TiAl entering the welding seam 3 The particles can play the role of dispersion strengthening, which is beneficial to obtain high-strength welded joints. The method of the invention is used for brazing aluminum-based composite materials and titanium alloys.

Description

technical field [0001] The invention relates to the field of brazing of aluminum-based composite materials and titanium alloys. Background technique [0002] The characteristics of aerospace vehicles, such as high temperature resistance, high speed, strong maneuverability, large load, and long range, put forward increasingly stringent requirements on the material properties of the aircraft, especially the lightweight structure. New lightweight and high-strength materials can not only improve the performance of aircraft in all aspects, but also reduce manufacturing costs. Aluminum matrix composites have the advantages of low density, high strength, and high rigidity, and have great application potential in aerospace, automobile, electronics and other fields. Titanium alloy has strong high temperature resistance and excellent mechanical properties, and is widely used in my country's aerospace and shipbuilding fields. [0003] Aluminum matrix composites and titanium alloys ar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K1/06B23K1/19B23K1/20
CPCB23K1/06B23K1/19B23K1/20B23K2103/10B23K2103/14
Inventor 许志武李政玮柴本闫久春
Owner HARBIN INST OF TECH
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