Effect of nitrogen addition on the stacking-Fault energies in si-added austenitic stainless steel

Yasuhito Kawahara, Ryo Teranishi, Chikako TaKushima, Jun Ichi Hamada, Kenji KaneKo

    Research output: Contribution to journalArticlepeer-review

    Abstract

    The stacking-fault energies (SFE) were measured by weak-beam TEM method, and deformation mechanisms in room and high temperature were characterized in terms of the effect of nitrogen addition on SFE in Si-added austenitic stainless steel (Fe-19%Cr-13%Ni-0.05%C-3%Si-x%N). Nitrogen addition resulted in decrease of SFE and changing the dislocation configuration from tangled to planar in room temperature. In high temperature, nitrogen addition resulted in the increase of dislocation density in the subboundary by the decrease of SFE. These results indicated that addition of nitrogen contributed to room and high temperature strength because of the decrease of SFE.

    Original languageEnglish
    Pages (from-to)816-825
    Number of pages10
    JournalTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
    Volume106
    Issue number11
    DOIs
    Publication statusPublished - 2020

    All Science Journal Classification (ASJC) codes

    • Condensed Matter Physics
    • Physical and Theoretical Chemistry
    • Metals and Alloys
    • Materials Chemistry

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