Determination of residual stress in nitrided steels with transmission angle-dispersive diffraction
Communication sans acte
Auteur
BARRALLIER, Laurent JÉGOU, SébastienRésumé
Residual stress analysis with transmission angle-dispersive diffraction is carried out on nitrided steels. It aims evaluating residual stresses within the ferritic matrix but also within secondary phases such as nano-scale nitrides and polycrystalline cementite. Samples of various alloying elements contents are investigated. Results are compared to laboratory X-ray diffraction and micromechanical modeling of gas nitriding of steels.
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Article dans une revue avec comité de lectureDUMONT, Myriam; BARRALLIER, Laurent; JÉGOU, Sébastien (Elsevier, 2018)
Anomalous small angle scattering (ASAXS) is a powerful non-destructive technique that can provide char- acteristic features of nanoscale precipitates such as the volume fraction, and chemical composition. In this paper, ...
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Article dans une revue avec comité de lecture; ;BARRALLIER, Laurent; JÉGOU, Sébastien (Materials Research Forum LLC, 2016)
This paper deals with the measurement of residual stresses in cementite after gas-nitriding of a 33CrMoV12-9 steel. During nitriding, precipitation of nanometric alloying elements nitrides and cementite at grain boundaries ...
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Communication avec acte;BARRALLIER, Laurent; JÉGOU, Sébastien (ASM International, 2016)
Machining is known to introduce plastic straining and residual stress gradients in surface of mechanical parts. If not controlled, the mechanical state of a surface can influence adsorption and diffusion of atoms during ...
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Communication avec acteBARRALLIER, Laurent; JÉGOU, Sébastien (2015)
Le traitement thermochimique de nitruration est un traitement de surface permettant d'améliorer la durée de vie en fatigue des pièces traitées. Les dernières avancées dans ce domaine permettent de définir les paramètres ...
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Communication sans acte; ; ;BARRALLIER, Laurent; JÉGOU, Sébastien (2015)
Stress Corrosion Cracking (SCC) is a typical failure of engineering materials applied in corrosive environments. In light water reactors for example, this results in loss of electrical capacity and related costs of repair ...