PULSED LASER SURFACE MODIFICATION OF AZ31B WITHAl-Si

Baoshuai Du, Sameer R. Paital and Narendra B. Dahotre ()
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Baoshuai Du: Shandong Electric Power Research Institute, Jinan, 250002, China
Sameer R. Paital: Department of Materials Science and Engineering, University of North Texas, Denton, Texas-76207, USA
Narendra B. Dahotre: Department of Materials Science and Engineering, University of North Texas, Denton, Texas-76207, USA

Surface Review and Letters (SRL), 2012, vol. 19, issue 02, 1-6

Abstract: A pulsedNd:YAGlaser was used to modify the surface properties ofMgalloy (AZ31B) for wear application withAl-Sias precursor material. Highly refined microstructure consisting ofMg2Si, Mg, Al12Mg17andAl2O3was obtained. Phase constituent was correlated with thermodynamic calculation by employing Thermocalc™. The evolution of phase amount in the coatings was associated with the laser processing parameters. Due to the presence of highly refined microstructure and hard intermetallic reinforcements, substantial improvement of microhardness has been found in the coating region.

Keywords: Mgalloys; laser treatment; microstructure (search for similar items in EconPapers)
Date: 2012
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DOI: 10.1142/S0218625X12500151

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