| Title |
Effect of TiC and AlN on the Wear Behavior and Mechanical Properties of Hypereutectic Al-Si Alloys |
| Authors |
김용진(Yong Jin Kim); 박익민(Ik Min Park); 박용호(Yong Ho Park); 최진명(Jin Myung Choi); 주승환(Seung Hwan Ju) |
| DOI |
https://doi.org/10.3365/KJMM.2010.48.11.1003 |
| ISSN |
1738-8228(ISSN), 2288-8241(eISSN) |
| Keywords |
composites; sintering; mechanical properties; tensile test; wear |
| 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. |