Effect of Filler Wire Composition on the Nd:YAG Laser Weldability of 6061 Aluminum Alloy

Abstract:

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2 mm thick 6061-T6 aluminum alloy sheets were I square butt welded using 3kW Nd:YAG laser. Filler wires of 1 mm diameter, 5183A(Al-4wt.%Mg), 4043A(Al-5wt.%Si) and 4047A (Al-12wt.%Si) were used. The welds made with 4047A wire showed the lowest solidification cracking among the welds investigated. Abundant amount of Al-12wt.%Si eutectic which was observed at the grain boundaries of the 4047A wire feed welds was closely related with the reduced solidification cracking susceptibility. Yield and tensile strength, and formability of the welds made with 4047A wire were improved compared to the welds made with other filler wires, which is attributed to the reduced cracking susceptibility in the welds.

Info:

Periodical:

Materials Science Forum (Volumes 475-479)

Main Theme:

Edited by:

Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie

Pages:

2591-2594

DOI:

10.4028/www.scientific.net/MSF.475-479.2591

Citation:

J. W. Yoon et al., "Effect of Filler Wire Composition on the Nd:YAG Laser Weldability of 6061 Aluminum Alloy", Materials Science Forum, Vols. 475-479, pp. 2591-2594, 2005

Online since:

January 2005

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$35.00

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