An investigation of the crack propagation in tool steel X38CrMoV5 (AISI H11) in SET specimens

M. Shah (1) , Christine Boher (1) , Sabine Le Roux (1) , Farhad Rezai-Aria (1) , Catherine Mabru (2)

1 ICA - Institut Clément Ader
2 Département Génie Mécanique Ecole Nationale Supérieure d'Ingénieurs de Constructions Aéronautiques 1 Place Emile Blouin 31056 Toulouse Cedex 5

An approach is proposed for the evaluation of surface fatigue damage of hot forming tools that undergo severe thermo mechanical loading. Fatigue crack propagation in a hot work tool steel X38CrMoV5‐47HRC is investigated using single‐edge cracked tension specimens with 3 different thicknesses (2.5, 1, 0.6 mm) and two R‐values. The stress intensity factor is evaluated with ABAQUS (R). Paris curves are established for the crack propagation experiments.

Mots clés: Fatigue; Surface damage; Hot work tools; Crack propagation

Domaines: Sciences de l'ingénieur [physics]

M. Shah, Christine Boher, Sabine Le Roux, Farhad Rezai-Aria, Catherine Mabru. An investigation of the crack propagation in tool steel X38CrMoV5 (AISI H11) in SET specimens. REVUE DE METALLURGIE‐CAHIERS D INFORMATIONS TECHNIQUES, 2009, 106 (3), pp.140-145. ⟨10.1051/metal/2009025⟩. ⟨hal-01666705⟩