The Influence of Wheel/Rail Contact Conditions on the Microstructure and Hardness of Railway Wheels
Figure 14
OM images of microstructure in the running band (centre of the tread): (a) Region D1, (b) Region D2, and (c) Region D3. The tangential forces are generally lower in this region and typically circumferential (normal to these sections). There is no obvious shearing of the microstructure here.
