Aluminium alloy welding wire containing TiB2 particles

Abstract

The invention discloses an aluminium alloy welding wire containing TiB2 particles. The aluminium alloy welding wire comprises the following elements by weight: 1.1%-3.1% of Zn, 4.1%-4.9% of Mg, 1.3%-1.7% of Cu, 0.02%-0.3% of Zr, 0.03%-0.3% of Cr, 0.01%-0.4% of Fe, 0.01%-0.3% of Si, 0.01%-0.4% of Mn, no more than 6% of TiB2 particles and the balance Al, wherein the diameter of the TiB2 particles is11 micrometers-30 micrometers.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy welding wire, in particular to a TiB-containing 2 Granular aluminum alloy welding wire and a preparation method thereof. Background technique [0002] Because of its low density, good electrical conductivity, high plasticity, easy processing and many other excellent properties, aluminum alloy has a wide range of applications in the fields of aerospace, electronics, automobiles and transportation. It can be said that aluminum is the material with the largest amount of use and the widest application range among non-ferrous metal materials. Among various aluminum alloys, 7XXX series aluminum alloys are also called high-strength aluminum alloys or superhard aluminum alloys because they have the highest strength among aluminum alloys. As a high-performance material, 7XXX series high-strength aluminum alloy has the advantages of high specific strength, specific stiffness, good stress corrosion ...

AI Technical Summary

Problems solved by technology

[0005] Therefore, there is an urgent need to develop an aluminum alloy welding wire containing ceramic particles, which can not only improve the strength and thermal stability of the weld, but also solve the problem of easy cracking in welding of 7XXX series aluminum alloys.