FABRICATION OF THE Fe-Cu-Al ALLOY BY MECHANICAL ALLOYING

Abstract

This paper presents some results from synthesizing the Fe-Cu-Al alloy system to apply in high load bearings by mechanical alloying. XRD pattern results showed that solid solution Cu-Al was formed during milling. Most material samples had total porosity in range of 20¸27% when the compress pressure in range of 312¸390 MPa, the sintering temperature in range of 850¸950°C and sintering time in 1.0 hour. The total porosity decreased when compress pressure and sintering temperature increased. Most samples had open-pore ratio higher than 80%. The hardness of samples were in range of 47¸63.4HRB and increasing when milling time increased. The Fe-Cu-Al alloy system promise to satisfy the demand of high load bearing materials.