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고질소 Fe-l8Cr-l8Mn-2Mo-0.9N 강의 미끄럼 마멸 기구
Sliding Wear Mechanism of the High-Nitrogen Austenitic 18Cr-l8Mn-2Mo-0.9N Steel

김승덕   (국민대학교 신소재공학부UU0000250  ); 김성준   (한국기계연구원CC0007559  ); 김용석   (국민대학교 신소재공학부UU0000250  );
  • 초록

    Sliding wear mechanism of a high nitrogen austenitic 18Cr-18Mn-2Mo-0.9N steel has been investigated. Dry sliding wear tests of the steel were carried out at various loads of IN-10N under a constant sliding speed condition of 0.15m/s against AISI 52100 bearing steel balls. Solution ( $1050^{\circ}C$ ) and isothermal aging ( $900^{\circ}C$ ) heat treatments were performed on the steel and the effect of the heat treatments on the wear was investigated. Wear rates of the solution-treated steel specimen remained low until 5N load, and then increased abruptly at loads above 5N. The rates of isothermally aged specimens were low and increased gradually with the applied load. Worn surfaces, their cross sections, and wear debris of the steel specimens were examined with a scanning electron microscopy. Phases of the heat-treated specimen and the wear debris were identified using XRD. The transformed phase underneath a sliding track was investigated and analyzed using a TEM. Effects of the phase transformation during the wear and $Cr_{2}N$ precipitates formed during the isothermal aging on the wear of the austenitic steel were discussed.


  • 주제어

    High-Nitrogen Steel .   Austenitic Steel .   18Cr-18Mn-2Mo-0.   9N Steel .   Sliding Wear .   Wear Mechanism .   $Cr_{2}N$.  

  • 참고문헌 (5)

    1. J. W. Simmons, 1966, Overview: High-Nitrogen Alloying of Stainless Steels, Mater. Sci. Eng., Vol. A207, pp. 159-169 
    2. I. A. Yakubtsov, A. Ariapour, D. C. Perovic, 1999, Effect of Nitrogen on Stacking Fault Energy of F.C.C Iron-Based Alloys, Acta Materialia, Vol. 47, pp. 1271-1279 
    3. A. Fischer, 2003, The Effects of Subsurface Deformation on the Sliding Wear Behaviour of a Microtextured High Nitrogen Steel Surface, Wear, Vol. 257, pp. 284-291 
    4. D. Goodchild, W. T. Roberts, D. V. Wilson, 1970, Acta Met., Vol. 18, pp. 107-118 
    5. T.-H. Lee, 2004, Precipitation of ${\sigma}-phase$ in High-Nitrogen Austenitic 18Cr-18Mn-2Mo-0.9N Stainless Steel During Isothermal Aging, Scripta Materialia, Vol. 50, pp. 1325-1328 
  • 이 논문을 인용한 문헌 (2)

    1. Yi, S.K. ; Kim, Y.S. 2010. "Sliding Wear Behavior of Pure Metal, Fe and Cu Having a Cubic Crystal System" 소성가공 = Transactions of materials processing : Journal of the Korean society for technology of plastics, 19(6): 357~362     
    2. Yoon, N. ; Kim, Y.S. 2011. "Sliding Wear Behavior of AISI 52100 Steel with Pearlitic and Bainitic Microstructures" 소성가공 = Transactions of materials processing : Journal of the Korean society for technology of plastics, 20(7): 479~484     

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