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The influence of laser alloying on the structure and mechanical properties of AlMg5Si2Mn surface layers

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Abstract

The goal of this paper was focused on investigation of microstructure and properties of surface layer produced during laser surface treatment of aluminium alloy by high-power fibre laser. The performed laser treatment involves remelting and feeding of Inconel 625 powder into the aluminium surface. As a base metal was used aluminium alloy AlMg5Si2Mn. The Inconel powder was injected into the melt pool and delivered by a vacuum feeder at a constant rate of 4.5 g/min. The size of Inconel alloying powder was in the range 60–130 µm. In order to remelt the aluminium alloy surface, the fibre laser of 3 kW laser beam power has been used. The linear laser scan rate of the beam was set 0.5 m/min. Based on performed investigations, it was possible to obtain the layer consisting of heat-affected zone, transition zone and remelted zone, without cracks and defects having much higher hardness value compared to the non-alloyed material.

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Acknowledgments

This publication was financed within the framework of the statutory financial grant supported by the Faculty of Mechanical Engineering of the Silesian University of Technology in 2015.

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Authors and Affiliations

  1. Division of Materials Processing Technology, Management and Computer Techniques in Materials Science, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, Konarskiego Str 18A, 44-100, Gliwice, Poland

    W. Pakieła, T. Tański, Z. Brytan & K. Labisz

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  1. W. Pakieła
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Correspondence to T. Tański.

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Pakieła, W., Tański, T., Brytan, Z. et al. The influence of laser alloying on the structure and mechanical properties of AlMg5Si2Mn surface layers. Appl. Phys. A 122, 352 (2016). https://doi.org/10.1007/s00339-016-9834-z

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  • DOI: https://doi.org/10.1007/s00339-016-9834-z

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