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The effects of deformation induced martensite on the sensitization of austenitic stainless steels

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Abstract

This paper compares the effects of deformation which induces martensite in austenitic stainless steel with deformation which does not on the sensitization and corrosion susceptibility of these alloys. We show that deformation which induces martensite causes rapid sensitization at temperatures below 600 °C, leads to extensive transgranular corrosion, and can produce rapid healing. The martensite is also an area of extensive carbide precipitation. Deformation alone noticeably increases the kinetics of sensitization only at temperatures where undeformed samples are readily sensitized. Without the presence of martensite, intergranular corrosion is always the predominant corrosion path, rapid healing is not observed, and most carbides precipitate along the grain boundaries.

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Authors and Affiliations

  1. General Electric, Corporate Research and Development, P.O. Box 8, 12301, Schenectady, NY

    C. L. Briant (Staff Metallurgist and Associate Research Staff) & A. M. Ritter (Staff Metallurgist and Associate Research Staff)

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  1. C. L. Briant
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  2. A. M. Ritter
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Briant, C.L., Ritter, A.M. The effects of deformation induced martensite on the sensitization of austenitic stainless steels. Metall Trans A 11, 2009–2017 (1980). https://doi.org/10.1007/BF02655120

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