Nanostructure Layer Formation on Cu-Zr-Al Alloy during Laser Remelting

Abstract:

This paper reports laser remelting of crystalline Cu based alloys in order to produce amorphous layer on the surface. The as prepared Cu based master alloy ingots were imbedded in a metallic sinking with Wood metal to assure the good thermal conductivity during the laser treatment. The laser remelting of a thin surface layer and a subsequent rapid cooling of it was performed using impulse and continuous mode of Nd:YAG laser. In respectively the impulse mode the laser power and the interaction time were 1.5; 2 kW and 20÷100 ms. In the continuous mode the laser power was 2 kW, and the laser scan speed was 80÷120 mm/s. The characterization of the microstructure of surface layer was performed by XRD, scanning electron microscopy and microhardness measurements.

• Periodical: Materials Science Forum (Volume 729)
• Pages: 272-277
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.729.272
• Online since: November 2012
• Authors: Mária Svéda, Dóra Janovszky, K. Tomolya, J. Sólyom, G. Buza, A. Roósz
• Keywords: Bulk Amorphous Alloy, Laser Surface Technique, Nd:YAG Laser, Scanning Electron Microscope (SEM), X-Ray Diffraction (XRD)

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