Structure, mechanical, and tribotechnical properties of an austenitic nitrogen steel after frictional treatment

N. A. Narkevich, I. A. Shulepov, Yu P. Mironov

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    The features of the structure and the mechanical and tribotechnical properties of an austenitic nitrogen steel (Cr16.5, Mn18.8, C0.07, N0.53, Si0.52 wt %, and Fe for balance) after frictional treatment have been studied. It has been shown that, along with twinning, the nitrogen austenite upon frictional treatment undergoes a γ → stacking fault → ε transformation. The strengthening of the steel by the frictional treatment manifests in a delay of the onset of the plastic flow. In the structure of the surface layer with a thickness of 5 μm, a high concentration of stacking faults has been detected. The mechanical properties depend on the orientation of the acting stresses relative to the direction of the frictional treatment. Upon the sliding friction of a ball made of hard alloy (94%WC + 6%Co) on the strengthened surface, an anomalously low coefficient of friction of 0.13 is observed. The coefficient of friction in the presence of abrasive particles in the form of wear debris increases to 0.50; however, the wear rate is almost two times lower compared to the same characteristic for a nonstrengthened surface of the nitrogen steel tested under the same conditions.

    Original languageEnglish
    Pages (from-to)399-406
    Number of pages8
    JournalPhysics of Metals and Metallography
    Volume118
    Issue number4
    DOIs
    Publication statusPublished - 1 Apr 2017

    Fingerprint

    Steel
    Nitrogen
    Stacking faults
    steels
    mechanical properties
    Friction
    nitrogen
    Wear of materials
    crystal defects
    coefficient of friction
    Twinning
    Plastic flow
    Abrasives
    Debris
    sliding friction
    Austenite
    plastic flow
    abrasives
    twinning
    austenite

    Keywords

    • frictional treatment
    • mechanical properties
    • nitrogen steel
    • stacking fault
    • tribotechnical properties
    • ε martensite

    ASJC Scopus subject areas

    • Condensed Matter Physics
    • Materials Chemistry

    Cite this

    Structure, mechanical, and tribotechnical properties of an austenitic nitrogen steel after frictional treatment. / Narkevich, N. A.; Shulepov, I. A.; Mironov, Yu P.

    In: Physics of Metals and Metallography, Vol. 118, No. 4, 01.04.2017, p. 399-406.

    Research output: Contribution to journalArticle

    Narkevich, N. A. ; Shulepov, I. A. ; Mironov, Yu P. / Structure, mechanical, and tribotechnical properties of an austenitic nitrogen steel after frictional treatment. In: Physics of Metals and Metallography. 2017 ; Vol. 118, No. 4. pp. 399-406.
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