Influence of Welding Sequence on Residual Stress and Distortion in Rectangular Welding of 6061 Aluminum Alloy

Abstract:

This paper presented a detailed finite element simulation on the basis of elastic-plastic method combined with thermo-mechannical coupling algorithm，and the software abaqus was used for the welding simulation of thin-walled 6061-T6 aluminum. The residual stress and distortion with various types of welding sequence were investigated and the optimal welding sequence was gained through comparison and analysis. The results showed that the maximum residual stress on the plane of the welds was tensile stress after welding in a rectangular. The method of symmetry welding got smaller residual stress which could enhance the stability of the weldments, and starting from a longer welding path got smaller residual distortion of aluminum alloy.

• Periodical: Advanced Materials Research (Volume 668)
• Pages: 890-897
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.668.890
• Online since: March 2013
• Authors: Yi Jie, Li Can, Zhong Gang Sun
• Keywords: Aluminium Alloy, Finite Element, Welding Distortion, Welding Sequence

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