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Electron beam pressurizing connection method for aluminum alloy and particle-reinforced aluminum matrix composite material

A particle-reinforced aluminum and composite material technology, applied in electron beam welding equipment, metal processing equipment, welding equipment, etc., can solve the problems of metal burning interface reaction, etc., to improve the microstructure, weaken the pores, and improve the tensile strength of the joint Effect

Inactive Publication Date: 2013-04-03
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problems of severe metal burning and interface reaction when particle-reinforced aluminum-based composite materials are traditionally melted and welded, and provides an electron-beam pressurized connection method between aluminum alloy and particle-reinforced aluminum-based composite materials

Method used

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  • Electron beam pressurizing connection method for aluminum alloy and particle-reinforced aluminum matrix composite material
  • Electron beam pressurizing connection method for aluminum alloy and particle-reinforced aluminum matrix composite material
  • Electron beam pressurizing connection method for aluminum alloy and particle-reinforced aluminum matrix composite material

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specific Embodiment approach 1

[0022] Specific implementation mode 1: The electron beam pressurization connection method of aluminum alloy and particle-reinforced aluminum-based composite material of this embodiment is implemented in the following steps:

[0023] 1. The silicon carbide ceramic particle-reinforced aluminum matrix composite material and 7 series aluminum alloy to be welded are pretreated;

[0024] 2. Put the silicon carbide ceramic particle reinforced aluminum matrix composite material and 7 series aluminum alloy into the welding fixture, adjust the relative position of the silicon carbide ceramic particle reinforced aluminum matrix composite material and the 7 series aluminum alloy, and apply 1~5MPa on the contact surface Contact pressure; wherein the relative position of the silicon carbide ceramic particle-reinforced aluminum-based composite material and the 7-series aluminum alloy is that the misalignment of the butting surface of the silicon carbide ceramic particle-reinforced aluminum-based c...

specific Embodiment approach 2

[0035] Specific embodiment two: this embodiment is different from specific embodiment one in that the pretreatment method in step one is to mechanically polish the butt surface of the silicon carbide ceramic particle-reinforced aluminum matrix composite material to be welded and the 7 series aluminum alloy and its vicinity And chemical cleaning. Other steps and parameters are the same as in the first embodiment.

specific Embodiment approach 3

[0036] Specific embodiment three: this embodiment is different from specific embodiment one or two in that: the particle-reinforced aluminum matrix composite material in step one is composed of 2A12 aluminum matrix and SiC ceramic particle reinforced phase, among which 2A12 aluminum matrix The composition of Cu: 4.4%, Mg: 1.5%, Mn: 0.6%, impurity ≤ 0.15%, and the balance by weight is Al. Other steps and parameters are the same as those in the first or second embodiment.

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Abstract

The invention provides an electron beam pressurizing connection method for aluminum alloy and a particle-reinforced aluminum matrix composite material, and relates to an electron beam assisted heat source diffusion welding method for the aluminum alloy and the particle-reinforced aluminum matrix composite material, aiming at solving the problems of serious metal burning loss, interface reaction, air pores and the like existing in the traditional fusion welding technique of the particle-reinforced aluminum matrix composite material. The electron beam pressurizing connection method for the aluminum alloy and the particle-reinforced aluminum matrix composite material comprises the following steps of: 1) conducting pretreatment to two base metal blocks to be welded; 2) putting the two base metal blocks into a welding fixture and applying pressure to squeeze the base metal blocks; 3) conducting vacuum pumping treatment; 4) conducting welding for the first time by adopting an upward defocusing mode; 5) conducting welding for the second time; and 6) conducting vacuum cooling to complete the electron beam pressurizing connection of the aluminum alloy and the particle-reinforced aluminum matrix composite material. The electron beam pressurizing connection method for the aluminum alloy and the particle-reinforced aluminum matrix composite material belongs to the field of pressurizing assisted welding.

Description

Technical field [0001] The invention relates to an electron beam assisted heat source diffusion welding method of aluminum alloy and particle-reinforced aluminum-based composite material, and belongs to the field of pressure assisted welding. Background technique [0002] Aluminum has many characteristics in the production of composite materials, such as light weight, low density, good plasticity, aluminum-based composite technology is easy to master, and easy to process. Like other composite materials, it can combine specific mechanical and physical properties to meet the needs of the product. Therefore, aluminum matrix composites have become one of the most commonly used and important materials in metal matrix composites. [0003] Particle-reinforced aluminum-based composite materials can be used to manufacture structural materials for satellites and aerospace, aircraft parts, metal mirror optical systems, and automotive parts; in addition, they can also be used to manufacture m...

Claims

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Application Information

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IPC IPC(8): B23K15/06B23K37/04
Inventor 张秉刚陈国庆王廷冯吉才甄公博
Owner HARBIN INST OF TECH
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