Aluminum bronze alloy Cu-14Al-4Fe-Mn was fabricated by casting. The friction and wear behaviors of the resulting Al-bronze
alloy sliding against AISI-1045 steel under dry- and oil-lubricated conditions were evaluated on a reciprocal friction and wear tester in pin-on-block configuration. The worn surface morphologies were observed on a scanning electron microscope, and the wear mechanisms were discussed. It was found that the HSWAB alloy showed much different friction and wear behaviors under dry- and oil-lubricated conditions. Namely, the alloy was characterized by abrasive wear, adhesion wear, oxidation wear, and fatigue wear under dry sliding, owing to the micro-cutting action of the hard wear debris peeled off from the alloy matrix and the surface oxide layer and the adhesion of the α phase in the HSWAB alloy with the counterpart AISI-1045 steel. The fatigue wear and oxidation wear were restrained under oil-lubricated condition, owing to the cooling action of the oil film and its ability to retard fracture initiation and propagation. Thus the HSWAB alloy was dominated by abrasive wear and adhesion wear under oil-lubricated sliding against the steel. The HSWAB alloy had a friction coefficient as small as 0.08 and wear rate as small as 3.7×10~(-9) kg/m, under the oil-lubricated condition, thus it could be reckoned as an excellent wear-resistant material.