Reciprocal sliding wear behaviour of B_4C particulate reinforced aluminum alloy composites

摘要

Aluminum based composites reinforced with B_4C particles were prepared by cryomilling and subsequent hot pressing steps. The cryomilled powders dispersed with 5 wt.% or 10 wt.% B_4C particles were hot pressed under a pressure of 600 MPa at 350 ℃. Microstructural studies conducted on the composites indicated that homogeneous distribution of the B_4C particles in the Al matrix and a good interface between them had been achieved. According to the results of reciprocating wear tests carried out by utilizing alumina and steel balls, wear resistance increased with increasing B_4C particle content.