Laser spot welding of laser textured steel to aluminium

被引：49

作者：

Pardal, Goncalo ^{[1
]}

Meco, Sonia ^{[1
]}

Dunn, Andrew ^{[2
,3
]}

Williams, Stewart ^{[1
]}

Ganguly, Supriyo ^{[1
]}

Hand, Duncan P. ^{[2
]}

Wlodarczyk, Krystian L. ^{[2
]}

机构：

[1] Cranfield Univ, Welding Engn & Laser Proc Ctr, Cranfield MK43 0AL, Beds, England

[2] Heriot Watt Univ, Sch Engn & Phys Sci, Inst Photon & Quantum Sci, Edinburgh EH11 4AS, Midlothian, Scotland

[3] SPI Lasers UK Ltd, Cosford Lane,Swift Valley Ind Estate, Rugby CV21 1QN, England

来源：

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2017年 / 241卷

基金：

英国工程与自然科学研究理事会;

关键词：

Laser processing; Laser texturing; Laser spot welding; Surface modification; Dissimilar metals; CONDUCTION MODE; REACTION LAYER; ALLOY; STRENGTH; JOINTS;

D O I：

10.1016/j.jmatprotec.2016.10.025

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Laser welding of dissimilar metals (steel and aluminium) was investigated with the aim to increase the maximum tensile shear load of the Fe-Al joints. The increase was achieved by texturing the surface of steel prior to the laser spot welding process which was performed in a lap joint configuration with the steel positioned on top of the aluminium and with a texture faced down to the aluminium surface. This configuration enabled an increase of the bonding area of the joints, because the molten aluminium filled in the gaps of the texture, without the need of increasing the process energy which typically leads to the growth of the intermetallic compounds. Different textures (containing hexagonally arranged craters, parallel lines, grid and spiral patterns) were tested with different laser welding parameters. The Fe-Al joints obtained with the textured steel were found to have up to 25% higher maximum tensile-shear load than the joints obtained with the untextured steel. (C) 2016 The Authors. Published by Elsevier B.V.

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页码：24 / 35

页数：12

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