Structure and Properties of the Aluminium Alloy AlSi12CuNiMg after Laser Surface Treatment

Abstract:

The investigations results concern the influence of laser heat treatment on the structure and mechanical properties of aluminium alloy, where the mutual relationships were tested and presented in this paper. The aim of this investigations was to improve the mechanical and wear resistance properties of the top surface layers of the aluminium alloy AlSi12CuNiMg by remelting and feeding the tungsten carbide powder in to the molten material and next quick solidification. The powder of tungsten carbide has been introduced in the liquid metal using gravity feeder at a constant rate of 3 g/min. In order to remelting the aluminium alloy surface, there has been used the high power diode laser HPDL, with an applied power of the laser beam in the range between 1.6 kW and 2.0 kW. The linear laser scan rate of the beam was set as much as 0.4 m/min. As a result of laser treatment of aluminium alloy a composite layer with higher hardness and enhanced wear resistance compared to the base material has been obtained.

• Periodical: Advanced Materials Research (Volume 1036)
• Pages: 40-45
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1036.40
• Online since: October 2014
• Authors: Tomasz Tański, Leszek Adam Dobrzański, Wojciech Pakieła*, Krzysztof Labisz, Marek Roszak, Błażej Tomiczek
• Keywords: Aluminium Alloy, Ball on Plate, Laser Feeding, Laser Surface Treatment, Surface Engineering, Tribological Test

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