Cumulative damage for the 28CrMoV5-0S steel under thermomechanical loading

Abstract

This paper is committed to the study of the damage of the 28CrMoV5-08 steel used in railway brake discs under thermomechanical loading. Isothermal and anisothermal experimental uniaxial cyclical traction compression tests are given to identify the fatigue damage law and the number of cycles to fracture versus temperature. For a better comprehension of the behavior of this material, metallurgical analyse which were conducted on the samples used in the experimental tests, have indicated the existence of fatigue damage and no microstructural changes.