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Fatigue and fretting fatigue of ion-nitrided 34CrNiMo6 steel

This work is concerned with the surface treatment (ion nitriding) of fretting fatigue and fatigue resistance of 34CrNiMo6. Tests are made on a servo-hydraulic machine under tension for both treated and non-treated specimens. The test parameters involve the applied displacements δ±80–±170 μm; frettin...

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Published in:Theoretical and applied fracture mechanics 2001, Vol.35 (1), p.69-79
Main Authors: Costa, J.D, Ferreira, J.M, Ramalho, A.L
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creator Costa, J.D
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description This work is concerned with the surface treatment (ion nitriding) of fretting fatigue and fatigue resistance of 34CrNiMo6. Tests are made on a servo-hydraulic machine under tension for both treated and non-treated specimens. The test parameters involve the applied displacements δ±80–±170 μm; fretting pressure σ n=1000–1400 MPa; fatigue stress amplitude σ a=380–680 MPa and stress ratio R=−1. The ion nitriding process improves both fatigue and fretting fatigue lives. Subsurface crack initiation from internal discontinuities was found for ion-nitrided specimens.
doi_str_mv 10.1016/S0167-8442(00)00050-1
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source Elsevier
subjects Applied sciences
Exact sciences and technology
Fatigue
Fretting fatigue
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Metals. Metallurgy
Surface treatments
title Fatigue and fretting fatigue of ion-nitrided 34CrNiMo6 steel
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