Microstructure and Wear Behaviour of Rapidly Solidified Al-20Si-5Fe-zPb(x=2, 4, 6wt.%) Alloys

급속응고 Al-20Si-5Fe-xPb(x=2, 4, 6 wt.%) 합금의 미세조직과 마모거동

The effect of Pb addition on microstructure and wear resistance was studied in rapidly solidified Al-20Si-5Fe-xPb(x=2, 4, 6 wt.%) alloys. The R/S Al-20Si-5Fe-xPb (x=2, 4, 6 wt.%) alloys showed a fine and homogeneous microstructure and an improved wear property compared with Al-20Si-5Fe alloy, while no significant change in UTS (Ultimate Tensile Strength) was shown. Contribution of the dispersoids on the wear property was discussed by showing the plastic deformation layers formed during wear track.