Published online by Cambridge University Press: 27 March 2009
An approach is proposed for the evaluation of surface fatiguedamage of hot forming tools that undergo severe thermomechanical loading. Fatigue crack propagation in a hot worktool steel X38CrMoV5-47HRC is investigated using singleedgecracked tension specimens with 3 different thicknesses(2.5, 1, 0.6 mm) and two R-values. The stress intensity factoris evaluated with ABAQUS®. Paris curves are established forthe crack propagation experiments.