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http://dx.doi.org/10.12656/jksht.2015.28.6.315

Fabrication of AZ31/CNT Surface Composite by Friction Stir Processing  

Kim, Jae-Yeon (Department of Graduate School NID Fusion Technology, Seoul National University of Science & Technology)
Lee, Seung-Mi (Department of Materials Science & Engineering, Seoul National University of Technology)
Hwang, Jung-Woo (Department of Graduate School NID Fusion Technology, Seoul National University of Science & Technology)
Byeon, Jai-Won (Department of Graduate School NID Fusion Technology, Seoul National University of Science & Technology)
Publication Information
Journal of the Korean Society for Heat Treatment / v.28, no.6, 2015 , pp. 315-321 More about this Journal
Abstract
Friction stir processing (FSP) was applied to fabricate AZ31/CNT (Carbon Nano Tube) surface composite for improvement of surface hardness of AZ31 Mg-based alloy. The effects of traverse speed of rotating tool and volume fraction of CNT (i.e., groove depth of 3 mm and 4 mm) on the soundness and hardness of the composite layer were investigated. Multi-walled CNTs were fully filled in a machined groove and stirring tool was rotated at the speed of 1400 rpm. Only under the tool traverse speed of 25 mm/min for the specimen with a groove depth of 3 mm, surface composite layer with no defect was successfully produced. Increased hardness of about 35% was observed in the composite layer.
Keywords
Friction Stir Processing; Surface Composite; Carbon Nanotube; AZ31 Magnesium Alloy;
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