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Determination of Residual Stresses in an Oxidized Metallic Alloy under Thermal Loadings

1
ICD-Lasmis, FRE-CNRS 2019, Université de Technologie de Troyes (UTT), 12 rue Marie Curie, 10010 Troyes, France
2
LaSIE FRE-CNRS 3474, Pôle Sciences et Technologie, Université de La Rochelle, Av. M. Crépeau, 17042 La Rochelle CEDEX, France
3
Institut Jean Lamour, CNRS UMR 7198, Université de Lorraine, Campus ARTEM, 2 Allée André Guinier, BP 50840, 54011 Nancy CEDEX, France
4
Institut P’, CNRS UPR 3346, Université de Poitiers, SP2MI-11 Boulevard Marie et Pierre Curie, BP 30179, 86962 Futuroscope, France
5
CNRS, Institut Néel, 38042 Grenoble CEDEX, France
6
Université Grenoble Alpes, Institut Néel, 38042 Grenoble CEDEX, France
*
Author to whom correspondence should be addressed.
Metals 2018, 8(11), 913; https://doi.org/10.3390/met8110913
Received: 28 August 2018 / Revised: 3 October 2018 / Accepted: 27 October 2018 / Published: 6 November 2018
(This article belongs to the Special Issue In Situ X-Ray Diffraction on Metals and Alloys)
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Abstract

In order to clarify the mechanical features of a metal under thermal cyclic loading for the system Ni30Cr- Cr 2 O 3 , a specific study has been carried out. In the present work, the residual stresses in both the metal and the oxide layer have been investigated. An adapted method is applied to process the experimental results that were obtained by using in-situ high temperature synchrotron diffraction at European Synchrotron Radiation Facility. The sin 2 ψ analysis provides information about the stress in metal and oxide. X-ray diffraction provides also the lattice parameter between crystallographic planes in the metal. To obtain correct stress values, a correction method is also proposed taking into account different discrepancies sources to ensure the equation of mechanical balance. View Full-Text
Keywords: in-situ X-rays; sample environment; data analysis; metals; metallic alloys; high temperature oxidation; chromia forming alloy in-situ X-rays; sample environment; data analysis; metals; metallic alloys; high temperature oxidation; chromia forming alloy
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Wang, Z.; Grosseau-Poussard, J.-L.; Panicaud, B.; Geandier, G.; Renault, P.-O.; Goudeau, P.; Boudet, N.; Blanc, N.; Rakotovao, F.; Tao, Z. Determination of Residual Stresses in an Oxidized Metallic Alloy under Thermal Loadings. Metals 2018, 8, 913.

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