Determination of Stress Profiles in Expanded Austenite by Combining Successive Layer Removal and GI-XRD

Frederico Augusto Pires Fernandes, Thomas Lundin Christiansen, Marcel A. J. Somers

    Research output: Contribution to journalConference articleResearchpeer-review

    Abstract

    The present work deals with the evaluation of the residual-stress profile in expanded-austenite by successive removal steps using GI-XRD. Preliminary results indicate stresses of several GPa's from 111 and 200 diffraction lines. These stresses appear largest for the 200 reflection. The strain-free lattice parameter decayed smoothly with depth, while for the compressive stress a maximum value is observed at some depth below the surface. Additionally a good agreement was found between the nitrogen profile determined with GDOES analysis and the strain-free lattice parameter from XRD.
    Original languageEnglish
    JournalAdvanced Materials Research
    Volume996
    Pages (from-to)155-161
    ISSN1022-6680
    DOIs
    Publication statusPublished - 2014
    Event9th European Conference on Residual Stresses - Troyes, France
    Duration: 7 Jul 201410 Jul 2014
    Conference number: 9

    Conference

    Conference9th European Conference on Residual Stresses
    Number9
    Country/TerritoryFrance
    CityTroyes
    Period07/07/201410/07/2014

    Keywords

    • Expanded Austenite
    • Grazing Incidence
    • Stress Analysis
    • Gas Nitriding
    • X-Ray Diffraction (XRD)
    • Low Temperature Surface Hardening

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