This research studied the effect of particle erosion wear of austempered ductile iron (ADI) with silicon content of 2.8 wt % and carbon content of 3.5 wt % respectively. The upper ausferrite and lower ausferrite matrix were produced by austempering the ductile irons at 420℃ and 230℃ for one-hour after austenitization. The results indicated that there was more retained austenitie in upper ausferrite structure than that of lower ausferrite ductile iron. The upper ausferrite ADI thus possessed superior erosion wear resistance that the lower ausferrite one. The maximum erosion rate of the ADI specimens occurred at the erosion angle near of 30℃. The erosion mechanism was found to be in the form of ductile fracture.
Erosion Austempered ductile iron