Braze soldering method for welding aluminum-base composite materials and titanium alloys and enabling intermetallic compound particles in weld seams to be dispersed and reinforced

An aluminum-based composite material and particle dispersion strengthening technology, which is applied in the direction of welding/welding/cutting articles, welding equipment, metal processing equipment, etc., can solve the problems of low joint performance, achieve high welding efficiency, and flexible solder composition ratio , a wide range of effects can be selected

Active Publication Date: 2020-03-06
HARBIN INST OF TECH
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  • 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 a

Method used

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  • Braze soldering method for welding aluminum-base composite materials and titanium alloys and enabling intermetallic compound particles in weld seams to be dispersed and reinforced
  • Braze soldering method for welding aluminum-base composite materials and titanium alloys and enabling intermetallic compound particles in weld seams to be dispersed and reinforced
  • Braze soldering method for welding aluminum-base composite materials and titanium alloys and enabling intermetallic compound particles in weld seams to be dispersed and reinforced

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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 provides a braze soldering method for welding aluminum-base composite materials and titanium alloys and enabling intermetallic compound particles in weld seams to be dispersed and reinforced, and relates to the field of braze soldering of the aluminum-base composite materials and the titanium alloys. The method solves the technical problem that performance of a connector obtained through an existing aluminum-base composite material and titanium alloy method is low. The method comprises the steps that firstly, a pure aluminum ingot is fused; secondly, the surface of a titanium alloy is modified; and thirdly, ultrasonic welding is carried out. According to the method, the welding temperature of the titanium alloys and the aluminum-base composite materials can be lowered obviously, the situation that a base material is heated and softened in the welding process is effectively prevented, TiAl3 particles entering the weld seams can have the dispersing and reinforcing function,and a welding connector with high strength is obtained beneficially. The method is used for braze soldering of the aluminum-base composite materials and the 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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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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