| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1556254 | Journal of Materials Science & Technology | 2012 | 7 Pages |
Abstract
Al 5083/10 wt% SiCp nano composites have been synthesized by means of high energy ball milling followed by spark plasma sintering (SPS). Nano composites produced via this method exhibited near-theoretical density while retaining the nano-grained features. X-ray diffraction (XRD) analysis indicated that the crystalline size of the ball milled Al 5083 matrix was observed to be â¼25 nm and it was coarsened up to â¼30 nm after SPS. Nano indentation results of nano composites demonstrated a high hardness of â¼280 HV with an elastic modulus of 126 GPa. Wear and friction characteristics with addition of SiCp reinforcement exhibited significant improvement in terms of coefficient of friction and specific wear rate to that of nano structured Al 5083 alloy. The reduction in specific wear rate in the nanocomposite was mainly due to the change of wear mechanism from adhesive to abrasive wear with the addition of SiCP which resulted in high hardness associated with nano-grained microstructure.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Chemistry
Authors
Sivaiah Bathula, M Saravanan, Ajay Dhar,