Abstract Railway wheels are commonly made from medium carbon steels (~0.55 wt.% C), heat treated to a near pearlitic microstructure with 5–10% pro-eutectoid ferrite. During the operation of freight trains, where block brakes used, high thermal loads occur together contact stresses, which combined can affect mechanical properties material. In this study, effects annealing on local and in railway...

A model that describes pearlite-to-austenite transformation during continuous heating in a eutectoid steel has been developed. The influence of structure parameters, such as interlamellar spacing and edge length of pearlite colonies, and heating rate on the austenite formation kinetics has been experimentally studied and considered in the modeling. It has been found that the kinetics of austeni...

A formula is proposed to calculate the chemical austenitising temperature derived by means of a neural network model. A wide range of compositions were used, allowing to predict changes of tendency in the slopes of the austenitisation temperature, consistent with the existence of a eutectoid composition.

The influence of 600°C aging treatment on the microstructure and mechanical properties 316H stainless steel weld metals with different C contents have been studied. results indicated that during process, rapid precipitation M23C6 carbide occurred in ?-ferrite firstly owing to high diffusion rate C. After is depleted by M23C6, residual transforms into ? phase through eutectoid transformation (?-...