Development of Properties of P/M Austenitic Stainless Steels by Nitrogen Infusion

J. Romu, Jyrki Tervo, H. Hänninen, J. Liimatainen

    Research output: Contribution to journalArticleScientificpeer-review

    9 Citations (Scopus)

    Abstract

    Properties of nitrogen alloyed P/M austenitic stainless steels manufactured by Hot Isostatic Pressing (HIP) of gas atomized powders were studied. Nitrogen contents beyond the solubility limit of nitrogen in the melt were obtained by solid state nitriding in a fluidized bed furnace. As a disadvantage of the fluidized bed nitriding, the oxygen contents in the powder and the final product increased. Nitrogen alloying increases the strength level, as well as the corrosion and wear resistance of P/M austenitic stainless steels. Nitride precipitation is detrimental to corrosion resistance and ductility, but beneficial to yield strength and wear resistance.
    Original languageEnglish
    Pages (from-to)938-946
    Number of pages9
    JournalISIJ International
    Volume36
    Issue number7
    DOIs
    Publication statusPublished - 1996
    MoE publication typeA1 Journal article-refereed

    Keywords

    • austenitic stainless steels
    • nitrogen
    • powder metallurgy
    • solid state nitriding
    • mechanical properties
    • corrosion resistance
    • adhesive wear resistance

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