The Influence of Wheel/Rail Contact Conditions on the Microstructure and Hardness of Railway Wheels
Figure 12
OM images of microstructure: (a) flange back (FB) and (b) flange face (B); These regions experience rubbing contacts with checkrails or the outer running rail on sharp curves. The predominant direction of the shear forces is circumferential (normal to the cross section in the figure), and the microstructure is affected to a depth of approximately 0.2 mm.
