论文信息 - Fatigue strength and failure mechanisms in the VHCF-region for quenched and tempered steel 42CrMoS4 and consequences to fatigue design

Fatigue strength and failure mechanisms in the VHCF-region for quenched and tempered steel 42CrMoS4 and consequences to fatigue design

Abstract Investigations on quenched and tempered steel 42CrMoS4 from two batches ( R m = 1100 MPa , 1350 MPa) are presented. Fatigue tests with smooth ( K t = 1 ) and notched ( K t = 1.75 / 1.55 ) and partly shot peened specimens were conducted at R = − 1 and R = 0 up to N = 2 × 1 0 9 to determine fatigue strength behavior and failure mechanisms. A possibility for analysis of experimental data including VHCF-results is explained. From the comparison of the results with a S − N curve from a design code recommendations for design and assessment of components are derived.

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