Abstract The joining process of bainitic rails is significant in terms their industrialization high-speed and heavy-loaded railways. This paper demonstrates the microstructure changes critical zone welded joint, which responsible for greatest deterioration mechanical properties. Extensive progress decomposition retained austenite ferrite occurs low-temperature heat-affected (LTHAZ) flash-butt j...

The effects of strain on the microstructure and mechanical properties 0.81C-0.22Si-0.31Mn (wt%) high-carbon steel were investigated by thermal simulation, scanning electron microscopy, high-resolution transmission microscopy (HRTEM), an backscatter diffractometer (EBSD). It was found that when deformed at 670 °C (a temperature between A1 Ar1), a deformation-induced pearlite transformation cemen...

1. Introduction Although cementite (Fe 3 C) is a most important phase in steels, at the same time, there is very little known in regard to the fundamental properties of Fe 3 C. This lack of information is largely a result of this compound being metastable with respect to its decomposition products: C-saturated ferrite or austenite (depending on temperature) and graphite. It is very difficult to...