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Residual Stresses in Modelling Fatigue Lifetime of Gas Nitrided Iron-Based Alloys

Type
Articles dans des revues avec comité de lecture
Author
WEIL, Hadrien
211915 Mechanics surfaces and materials processing [MSMP]
BARRALLIER, Laurent
211915 Mechanics surfaces and materials processing [MSMP]
JEGOU, Sébastien
211915 Mechanics surfaces and materials processing [MSMP]
COURLEUX, A.
BECK, Guillaume

URI
http://hdl.handle.net/10985/11577
DOI
http://dx.doi.org/10.21741/9781945291173-17
Date
2016
Journal
Materials Research Proceedings, Residual Stresses 2016: ICRS-10

Abstract

The objective of this work is to propose a model abled to optimize the mechanical properties from gaseous nitriding of steels (hardness, residual stresses) for a given loading and fatigue lifetime. Multiaxial fatigue criteria are used and the present study focuses on the influence of residual stresses. Starting from a surface loading profile, the theoretical residual stress in-depth profile can be calculated aiming infinite fatigue lifetime. The model allows then optimization of the nitriding parameters.

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