Journal of the Korean Society for Heat Treatment (열처리공학회지)

The Korean Society for Heat Treatment (한국열처리공학회)
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The Effects of Solute Carbon Atoms in Ferrite on Austenitization and the Thermal Expansion Coefficients of Ferrite and Austenite

페라이트 내에 고용된 미량의 탄소가 오스테나이트화 거동 및 페라이트와 오스테나이트의 열팽창 계수에 미치는 영향

  • Mun, Yumi (Department of Materials Science and Engineering, Yonsei University) ;
  • Park, Jihye (Department of Materials Science and Engineering, Yonsei University) ;
  • Kang, Singon (Department of Materials Science and Engineering, Yonsei University) ;
  • Jung, Jae-Gil (Department of Materials Science and Engineering, Yonsei University) ;
  • Lee, Sangmin (Department of Materials Science and Engineering, Yonsei University) ;
  • Lee, Young-Kook (Department of Materials Science and Engineering, Yonsei University)
  • 문유미 (연세대학교 공과대학 신소재공학과) ;
  • 박지혜 (연세대학교 공과대학 신소재공학과) ;
  • 강신곤 (연세대학교 공과대학 신소재공학과) ;
  • 정재길 (연세대학교 공과대학 신소재공학과) ;
  • 이상민 (연세대학교 공과대학 신소재공학과) ;
  • 이영국 (연세대학교 공과대학 신소재공학과)
  • Received : 2013.09.13
  • Accepted : 2013.09.30
  • Published : 2013.11.30
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Abstract

The effects of solute carbon atoms on the thermal expansion coefficients of ferrite and austenite as well as austenitization behavior were investigated by comparing carbon-free ferrite and carbon-containing ferrite. The thermal expansion coefficients and austenitization start and finish temperatures were measured using a dilatometer. Solute carbon atoms at elevated temperatures above the cementite dissolution temperature (650 K) decreased the thermal expansion coefficients of both ferrite and austenite. In addition, minute amount of carbon atoms dissolved in ferrite stimulated austenite nucleation during continuous heating, resulting in the lower starting temperature of austenitization.

Keywords

References

  1. C.-S. Oh, H. N. Han, S.-J. Park and S.-J. Kim : 재료마당, 22 (2009) 4.
  2. G. R. Speich and A. Szirmae : Trans. AIME 245 (1969) 1063.
  3. C. I. Garcia and A. J. DeArdo : Met. Trans. 12A (1981) 521.
  4. F. G. Caballero, C. Capdevila and C. Garcia de Andres : J. Mater. Sci. 37 (2002) 3533. https://doi.org/10.1023/A:1016579510723
  5. F. G. Caballero, C. Capdevila and C. Garcia de Andres : ISIJ Int. 41 (2001) 1093. https://doi.org/10.2355/isijinternational.41.1093
  6. M. Onink, F. D. Tichelaar, C. M. Brakman, E. J. Mittemeijer and S. van der Zwaag : Z. Metallkd. 87 (1996) 24.
  7. J. Z. Zhao, C. Mesplont and B. C. De Cooman : ISIJ Int. 41 (2001) 492. https://doi.org/10.2355/isijinternational.41.492
  8. S.-J. Lee, M. T. Lusk and Y.-K. Lee : Acta Mater. 55 (2007) 875. https://doi.org/10.1016/j.actamat.2006.09.008
  9. M. Onink, C. M. Brakman, F. D. Tichelaar, E. J. Mittemeijer, S. van der Zwaag, J. H. Root and N. B. Konyer : Scripta Metall. Mater. 29 (1993) 1011. https://doi.org/10.1016/0956-716X(93)90169-S
  10. M. Hillert : Acta Metall. 2 (1954) 11. https://doi.org/10.1016/0001-6160(54)90088-7
  11. V. I. Savran, Y. Van Leeuwen, D. N. Hanlon, C. Kwakernaak, W. G. Sloof and J. Sietsma : Metal. Mater. Trans. 38A (2007) 946.
  12. J.-H. Park and Y.-K. Lee : Scripta Materialia 58 (2008) 602. https://doi.org/10.1016/j.scriptamat.2007.11.021
  13. Thermo-Calc Software, http://www.thermocalc.se/.

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