Influence of Beam Speed on Residual Stresses in the Vicinity of Laser Welds

Abstract:

One of the drawbacks of the laser welding is distortion of the welded bodies that is closely linked with the generation and redistribution of residual stresses in the vicinity of the weld. In this contribution, mapping of surface macroscopic residual stresses and grain sizes was performed for several welds created with the laser beam with various speeds. Larger distortions are exhibited by samples manufactured with higher laser beam speed, which also exhibit substantial compressive residual stresses perpendicularly to the welds axis.

• Periodical: Advanced Materials Research (Volume 996)
• Pages: 463-468
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.996.463
• Online since: August 2014
• Authors: Nikolaj Ganev, Kamil Kolařík, Zdenek Pala*, Stanislav Němeček, Jiří Čapek
• Keywords: Beam Speed, High-Power Diode Laser, Laser Welding, X-Ray Diffraction (XRD)

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