Institute of Materials Science and Engineering

Cyclic deformation behavior and microstructure of highly loaded wheel and tire steels

In this project, we investigated the microstructural characterization and cyclic deformation behavior of highly loaded railway wheel and tire steels. We tested carbon steels of UIC (International Union of Railways) specifications in technically relevant heat treatment conditions. Besides single and multiple step stress tests, we focused on the influence of microstructure gradients on the cyclic deformation behavior. In addition, we investigated mean loadings and associated cyclic creep and stress relaxation effects. We were able to characterize cyclic deformation behavior by stress-strain hysteresis measurements as well as thermometric and electrical resistance measurements. We used light and electron microscopy to analyze the interrelation between the microstructure and the physical values.

Go to top