Abstract
5A06 aluminum alloy sheets were welded using a 4 kW fiber laser with SAl-Mg5 filler. Processing parameters such as laser power, welding speed and wire filler speed were optimized with the objective of producing a welded joint with complete penetration and smooth welding profile. Influence of heat input on microstructures and mechanical properties of butt joints have been studied. The results show that the microstructure of the welding seam was dense columnar crystals near to the fusion area and fine dendrites in the center. The crystal of heat affected zone (HAZ) was coarsening and increased slightly with increasing heat input, but the width of HAZ was only about 80 μm. With increasing heat input, the mechanical properties of butt joints were improvement and the damage position was migrating from HAZ to base metal. Scanning electron microscope (SEM) observation on the fracture surface of welded joint showed that the pores exerted a great influence on the reduction in strength and elongation, but the microstructure of the welding seam hardly affected the tensile properties.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Dickerson PB (1986) Welding of aluminum and aluminum alloys. Encycl Mater Sci Eng 5:108–121
Mayer C, Fouquet F, Robin M (1996) Laser welding of aluminium–magnesium alloys sheets process optimization and welds characterization. Mater Sci Forum 217–222:1679–1684
Zhao H, Debroy T (2001) Weld metal composition changes during conduction mode laser welding of aluminum alloy 5182. Metall Mater Trans 32B(1):163–172
Haboudou A, Peyre P, Vannes AB, Peix G (2003) Reduction of porosity content generated during Nd:YAG laser welding of A356 and AA5083 aluminium alloys. Mater Sci Eng A 363:40–52
Kutsuna M, Yan Q, Study on porosity formation in laser welds of aluminium alloys, IIW-doc IV-683-97
Yoon JW, Lee YS, Lee KD, Park KY (2005) Effect of filler wire composition on Nd:YAG laser weld ability of 6061 aluminum alloy. Mater Sci Forum 475–479:2591–2594
Schinzelt C, Hohenberger B, Dausinger F, Hugel H (2000) Laser welding of aluminum extended processing potential by different wire positions. High-Power Lasers Manufact Proc SPIE 3888:380–391
Acknowledgements
This work is supported by the Intelligent Welding Workshop Project for Offshore Drilling Platform Equipment Manufacturing (2012) (No. 2144) and the National Natural Science Foundation of China under the Grant No. 51405298.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2015 Springer International Publishing Switzerland
About this paper
Cite this paper
Yu, Y., Xu, Y., Xu, G., Chen, A., Chen, S. (2015). Influence of Heat Input on the Performance of Joint with Filling Wire Laser Welding 5A06 Aluminum Alloy. In: Tarn, TJ., Chen, SB., Chen, XQ. (eds) Robotic Welding, Intelligence and Automation. RWIA 2014. Advances in Intelligent Systems and Computing, vol 363. Springer, Cham. https://doi.org/10.1007/978-3-319-18997-0_7
Download citation
DOI: https://doi.org/10.1007/978-3-319-18997-0_7
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-18996-3
Online ISBN: 978-3-319-18997-0
eBook Packages: EngineeringEngineering (R0)