Two-dimensional and three-dimensional analyses of sigma precipitates and porosity in a superaustenitic stainless steel

Richard Warren Fonda, Erik Lauridsen Mejdal, W. Ludwig, P. Tafforeau, G. Spanos

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    X-ray micro-tomography revealed not only the true three-dimensional (3-D) distribution, interconnectivity, and morphology of coarse sigma precipitates in an AL-6XN superaustenitic stainless steel, but also the presence of an internal void network associated with these precipitates. The voids were present within the bulk of the undeformed material, indicating that they formed during alloy fabrication. The presence of these voids in association with the brittle sigma particles has important implications for the mechanical behavior of these alloys.
    Original languageEnglish
    JournalMetallurgical and Materials Transactions A - Physical Metallurgy and Materials Science
    Volume38A
    Issue number11
    Pages (from-to)2721-2726
    ISSN1073-5623
    DOIs
    Publication statusPublished - 2007

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