Structure and Mechanical Properties of Nitrogen Austenitic Steel after Ultrasonic Forging

N. A. Narkevich, A. I. Tolmachev, I. V. Vlasov, N. S. Surikova

    Research output: Contribution to journalArticle

    4 Citations (Scopus)

    Abstract

    Electron microscopy and X-ray diffraction have been used to investigate a nitrogen 07Kh17AG18 steel with an austenitic structure after the surface deformation treatment—ultrasonic forging. During ultrasonic forging, an austenitic structure transforms into a new structure with an elevated concentration of deformation-induced stacking faults, a lot of deformation microtwins, ε-martensite crystals. The austenite lattice parameter is found to be decreased in the surface layer. After ultrasonic forging, nitrided steel exhibits enhanced strength properties with retained high plasticity.

    Original languageEnglish
    Pages (from-to)288-294
    Number of pages7
    JournalPhysics of Metals and Metallography
    Volume117
    Issue number3
    DOIs
    Publication statusPublished - 1 Mar 2016

    Keywords

    • deformation
    • mechanical properties
    • nitrogen steel
    • stacking fault

    ASJC Scopus subject areas

    • Condensed Matter Physics
    • Materials Chemistry

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