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http://dx.doi.org/10.5781/KWJS.2011.29.2.088

Effects of Average Power on Laser Cladding of Hypereutectic Al-Si Alloy on Al 1050 Alloy  

Lee, Hyoung-Keun (Division of New Materials Engineering, HanBat National University)
Publication Information
Journal of Welding and Joining / v.29, no.2, 2011 , pp. 88-93 More about this Journal
Abstract
This study produced hypereutectic Al-Si clad layer on 1050 Al alloy by a novel laser cladding method. Pure Si powder was mixed with organic binder to make fluid paste which could be screen-printed on the 1050 Al alloy plate. Pulsed Nd:YAG laser was irradiated on the Si paste layer to melt and alloy with Al substrate. Different laser power of 99 W, 179 W and 261 W, was used to see the difference of the microstructure, composition and hardness of the clad layers. When laser power of 179 W was used, the clad layer had overall Si content of 38wt% and composed of fine primary Si particles and fine eutectic phase. At laser power of 261 W, the clad layer had overall Si content of 24wt% and composed of mainly fine eutectic phase. Vickers hardness of HV176.7 and HV150.3 on the clad layer was obtained at laser power of 179 W and 261 W, respectively.
Keywords
Pulsed laser; Cladding; Hypereutectic Al-Si alloy; Microstructures; Vickers hardness;
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Times Cited By KSCI : 1  (Citation Analysis)
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