Grinding of Iron-aluminides

Since the 1930s iron-aluminides are investigated due to their excellent corrosion resistance, low density and high specific strength. However, little work has been carried out on the machining of these alloys since then. This paper deals with grinding of Fe-26Al- 4Cr (at.%) with corundum grinding wheels and shows that the material can be machined in a ductile way, regardless of the material grain size. Material removal rates below Qw = 0.75 mm3/mms and open grinding wheel topographies lead to low grinding temperatures and an advantageous chip removal. Thus, high process reliability regarding workpiece quality and tool wear can be reached.