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Friction and wear of laser treated aluminium-silicon alloys

Gérard Coquerelle, J. L. FACHINETTI, C. M. Banas, G. L. Whitney

Open publisher page 7 citations

Abstract

Aluminium-silicon alloys surfaces have been modified by LASER-irradiation. A 5 kW CO2 LASER has been used to melt the surface of casting alloys. The quenching speed is high and reach 104 to 105 K/s; the size of the silicon pirticles in hypereutectic alloy can be controlled by LASER treatment. The wear resistance of these alloys increases after LASER treatment. Silicon content appears to be a dominant factor in resistance.

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What this paper is about

Aluminium-silicon alloys surfaces have been modified by LASER-irradiation. A 5 kW CO2 LASER has been used to melt the surface of casting alloys. The quenching speed is high and reach 104 to 105 K/s; the size of the silicon pirticles in hypereutectic alloy can be controlled by LASER treatment. The wear resistance of these alloys increases after LASER treatment. Silicon content appears to be a dominant factor in resistance.

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Available abstract

Aluminium-silicon alloys surfaces have been modified by LASER-irradiation. A 5 kW CO2 LASER has been used to melt the surface of casting alloys. The quenching speed is high and reach 104 to 105 K/s; the size of the silicon pirticles in hypereutectic alloy can be controlled by LASER treatment. The wear resistance of these alloys increases after LASER treatment. Silicon content appears to be a dominant factor in resistance.

Key concepts: Aluminium, Materials science, Silicon, Laser, Metallurgy, Quenching (fluorescence), Wear resistance, Alloy

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