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Fatigue crack growth tests were performed under various mixed-modeloading paths, on a maraging steel. The effective loading paths were computed by finiteelement simulations, in which asperity-induced closure and friction were modelled.Application of fatigue criteria for tension or shear-dominated failure after elasticplasticcomputations of stresses and strains, ahead of the crack tip, yielded predictionsof the crack paths, assuming that the crack would propagate in the direction whichwould maximise its growth rate. This approach appears successful in most cases.