Metallurgy of nitrogen absorption process in high Cr steels

S. Takaki, N. Nakamura

    Research output: Contribution to journalConference articlepeer-review

    2 Citations (Scopus)

    Abstract

    High chromium steels absorb a large amount of nitrogen at elevated temperatures in N2 gas atmosphere, although it takes a long time for full nitrogen absorption in bulky materials. In powder metallurgy, however, steels can absorb nitrogen completely in a very short time due to the short diffusion distance from surface to center of powder particles. It is convenient for discussing the equilibrium nitrogen absorption in high chromium steels. In this paper, the behavior of nitrogen absorption was investigated in relation to many factors; N2 gas pressure, temperature of treatment, Chromium content of steels and their crystal structure, and the chemical composition region which provides stable austenitic structure was proposed in Fe-Cr-N ternary alloy system.

    Original languageEnglish
    Pages (from-to)723-732
    Number of pages10
    JournalMaterials Science Forum
    Volume318
    DOIs
    Publication statusPublished - 1999
    EventProceedings of the 1998 5th International Conference on High Nitrogen Steels (HNS) - Stockholm, Swed
    Duration: May 27 1998May 28 1998

    All Science Journal Classification (ASJC) codes

    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering

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