Material removal factor (fab): A critical assessment of its role in theoretical and practical approaches to abrasive wear of ductile materials

It also covers scratch testing of gray cast iron (GCI) and AISI 1070 steel specimens, both with macro hardness close to 200 HV30kgf. Laboratory tests were performed under constant loads selected from 20 to 200 mN, dry interface. Geometric parameters of the scratches were measured with an optical interferometry profilometer and an SEM was used for image analysis. Clear correlations between scratch width (or depth) and applied load were observed, but that was not the case with calculated fab values. Image analysis confirmed the presence of different abrasion mechanisms at the same scratch shedding light on the difficulties encountered when measuring groove and pile-up areas.