2017
DOI: 10.1177/1350650117717824
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Rolling contact fatigue crack propagation in nitrided alloyed steels

Abstract: Experimental investigations were carried out to better understand the rolling contact fatigue mechanisms in nitrided layers of the 33CrMoV12-9 steel grade. Surface-initiated pitting failure mode was reproduced on a twin-disc machine to analyse crack growth and compressive residual stress behaviour within the nitrided layers. Metallographic examinations, 3D observations by means of high-resolution X-ray computed tomography and residual stress analysis were realised on nitrided 33CrMoV12-9 specimens before and a… Show more

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Cited by 8 publications
(1 citation statement)
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“…The in-depth residual stress distribution, after RCF, in specimen A, can be observed in Figure 5. Low stress relaxation in the longitudinal direction after the RCF tests, expressed by the circumferential compressive residual stresses (σ11), is observed, as also reported by Marion Le et al [32]. These stresses are relieved near the surface and present a constant value around −400 MPa in the first 300 µm depth.…”
Section: Mechanical Characterisation Of Nitrided Surface Layerssupporting
confidence: 77%
“…The in-depth residual stress distribution, after RCF, in specimen A, can be observed in Figure 5. Low stress relaxation in the longitudinal direction after the RCF tests, expressed by the circumferential compressive residual stresses (σ11), is observed, as also reported by Marion Le et al [32]. These stresses are relieved near the surface and present a constant value around −400 MPa in the first 300 µm depth.…”
Section: Mechanical Characterisation Of Nitrided Surface Layerssupporting
confidence: 77%