Microstructure and Wear Behavior of Al2218-B4C Nano Composites

Abstract

The effect of nano B₄C particle addition on the wear behaviour of Al2218 alloy composites has been investigated. Al2218 combination with 2 to 8 wt. % of nano B₄C composites were manufactured by stir technique. Microstructural study was completed by utilizing SEM and EDS. A pin-on-disc machine was used to evaluate the wear loss of examples, in which a set EN32 steel plate was used as the counter face. Wear tests were went with on Al2218 compound with nano B₄C particles strengthened composites at different loads of 9.8 N, 19.6 N, 29.4 N and 39.2 N with steady sliding rate of 2.8 m/sec and 2000 m sliding separation. Also, Wear tests were went with on Al2218 amalgam with nano B₄C particles strengthened composites at different paces of 1.4 m/sec, 1.8 m/sec, 2.3 m/sec and 2.8 m/sec with consistent load of 39.2 N and 2000 m sliding separation. The wear opposition of Al2218 compound improved with the gathering of B₄C particulates. Further, worn surface morphology and wear debris of prepared composites were studied to know the different wear phenomena.