FRETTING WEAR OF MECHANICALLY ALLOYED AL-FE AND AL-FE-MN ALLOYS

A double mechanical alloying process (dMA) was employed to Fabricate A l-Fe and Al-Fe-Mn alloys containing finely distributed intermetallic c ompounds and inert dispersoids (Al4C3 and Al2O3). The tribological pro perties of the produced alloys were investigated under fretting condit ions. It was shown that the fretting behaviour strongly depends on con tact conditions which are mainly determined by displacement and normal load, and the wear resistance of Al alloys can be improved by dispers ion of large amount of intermetallics and inert dispersoids. Compared with current and competitive wear resistant Al alloys, the dMA Al-Fe-M n alloy shows attractive wear and friction properties. The results ind icate that Al alloys fabricated by dMA are promising For wear-resistan ce applications.