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Laser Beam Welding of 6013 Aluminum Alloy Sheet using Different Filling Powders

Braun, R. and Roth, G. and Arnold, J. (2002) Laser Beam Welding of 6013 Aluminum Alloy Sheet using Different Filling Powders. In: Aluminum Alloys 2002, 396-402, pp. 1691-1696. Trans Tech Publications, Switzerland. ICAA - 8, Cambridge, 02.07. - 05.07.2002. ISBN 0-87849-899-0.

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Abstract

Butt welds of 1.6 mm thick sheet of the alloy 6013-T4 were produced using a Nd-Yag laser and filler powders of different aluminum alloys. Microstructures, hardness, tensile properties and the corrosion behavior of the welds were investigated in the as-welded condition and in the post-weld heat treated T6 temper. A dendritic solidification structure with interdendritic eutectic phases was observed in the fusion zone. Porosity was the prevailing weld defect. Artificial aging resulted in an increase of hardness in the fusion zone, indicating precipitation strengthening in the weld region. Joint efficiencies depend upon the filler powders used. Values between 75 and 90 % were achieved for as welding joints. When heat treated to the T6 temper, the weld exhibited strengths ranging from 70 to 90 % of the ultimate tensile strength of the base alloy 6013-T6. As indicated by cyclic acidified salt spray testing, the corrosion behavior of the welds was similar to that of the base material, which was sensitive to pitting. Joints in the as welded condition were found to be susceptible to stress corrosion cracking in the heat affected zone.

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=2003,
Title:Laser Beam Welding of 6013 Aluminum Alloy Sheet using Different Filling Powders
Authors:
AuthorsInstitution or Email of Authors
Braun, R.UNSPECIFIED
Roth, G.UNSPECIFIED
Arnold, J.UNSPECIFIED
Date:2002
Journal or Publication Title:Aluminum Alloys 2002
Volume:396-402
Page Range:pp. 1691-1696
Editors:
EditorsEmail
Gregson, P.J.UNSPECIFIED
Harris, S.UNSPECIFIED
Publisher:Trans Tech Publications, Switzerland
ISBN:0-87849-899-0
Status:Published
Keywords:laser beam welding, filler powders, AA6013, microstructure, porosity, hardness, tensile properties, corrosion behavior
Event Title:ICAA - 8, Cambridge, 02.07. - 05.07.2002
Organizer:Materials Science Forum
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:L - no assignement
DLR - Research theme (Project):L - Laser Research and Technology
Location: Stuttgart
Institutes and Institutions:Institute of Technical Physics
Institute of Materials Research
Deposited By: Dr.rer.nat. Hans-Albert Eckel
Deposited On:16 Sep 2005
Last Modified:14 Jan 2010 17:48

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