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http://dx.doi.org/10.3365/KJMM.2010.48.11.1003

Effect of TiC and AlN on the Wear Behavior and Mechanical Properties of Hypereutectic Al-Si Alloys  

Ju, Seung Hwan (School of Materials Science and Engineering, Pusan National University)
Choi, Jin Myung (School of Materials Science and Engineering, Pusan National University)
Kim, Yong Jin (Department of Powder Materials Research, Korea Institute of Materials Science)
Park, Ik Min (School of Materials Science and Engineering, Pusan National University)
Park, Yong Ho (School of Materials Science and Engineering, Pusan National University)
Publication Information
Korean Journal of Metals and Materials / v.48, no.11, 2010 , pp. 1003-1008 More about this Journal
Abstract
In this study, the effect of the reinforcement on the wear behaviour and mechanical properties of hypereutectic Al-Si alloys was investigated. The Gas atomized hypereutectic Al-20Si alloy powders were mixed with 1, 3, and 5 wt.% AlN and TiC ceramic particles and consolidated by hotpress. The Al-20Si powder has both finely dispersed primary Si phases and eutectic structures. The Al-20Si-AlN, TiC composites showed that the reinforcements were distributed along the boundary of the Al-20Si alloy. The UTS increased with increasing the AlN, TiC contents. At a lower load, with an increasing weight fraction of reinforcements, the wear rate decreased in both composites and the wear mechanism was adhesive wear. At a higher load, the shape of the debris changes the mechanism of the AlN composites to abrasive-adhesion wear and this resulted in an increase of the wear rate.
Keywords
composites; sintering; mechanical properties; tensile test; wear;
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Times Cited By SCOPUS : 1
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