Applied Microscopy

Korean Society of Microscopy (한국현미경학회)
권호 표지
DOI QR코드

DOI QR Code

Mn-deprived Phase Transformation in High-Mn Steel during the Dew-point Control Process

  • Hong, Woong-Pyo (Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University) ;
  • Baik, Sung-Il (Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University) ;
  • Kim, Gyo-Sung (POSCO Technical Research Laboratory) ;
  • Jeon, Sun-Ho (POSCO Technical Research Laboratory) ;
  • Chin, Kwang-Guen (POSCO Technical Research Laboratory) ;
  • Oh, Chang-Seok (Korea Institute of Materials Science) ;
  • Kim, Young-Woon (Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University)
  • Received : 2013.03.17
  • Accepted : 2013.03.20
  • Published : 2013.03.30
Download PDF
⟨ Previous Next ⟩

Abstract

Phase transformation by the Mn-deprivation was observed in the high-Mn twinning-induced plasticity-aided steel. Mn-depletion was induced by the formation of Mn-O oxide during the dew-point control process at temperature above $-20^{\circ}C$, which changed austenitic parent phase to multi-grained ferrite. Mixture of Al-O, Al-Mn-Si-O oxides were observed at the grain boundaries of transformed ferrite.

Keywords

References

  1. Gavriljuk V G, Tyshchenko A I, Razumov O N, Petrov Y N, Shanina B D, and Berns H (2006) Corrosion-resistant analogue of Hadfield steel. Mat. Sci. Eng. A 420, 47-54. https://doi.org/10.1016/j.msea.2006.01.066
  2. Grassel O, Kruger L, Frommeyer G, and Meyer L W (2000) High strength Fe-Mn-(Al, Si) TRIP/TWIP steels development--properties-application. Int. J. Plasticity 16, 1391-1409. https://doi.org/10.1016/S0749-6419(00)00015-2
  3. Hadfield H A (1956) Manganese Steel (Olver and Bald, London).
  4. Huin D, Flauder P, and Leblond J B (2005) Numerical simulation of internal oxidation of steels during annealing treatments. Oxid. Met. 64, 131-167. https://doi.org/10.1007/s11085-005-5718-x
  5. Li X S, Baek S I, Oh C S, Kim S J, and Kim Y W (2008) Dew-point controlled oxidation of Fe-C-Mn-Al-Si-Cu transformation-induced plasticity-aided steels. Scripta Mater. 59, 290-293. https://doi.org/10.1016/j.scriptamat.2008.03.025
  6. Mintz B, p. 551, Galvatech 2001: proceedings of the 5th International Conference on Zinc and Zinc Alloy Coated Steel Sheet, June 26-28, 2001, Brussels, Belgium /editor: Marcel Lamberights.
  7. Oikawa H (1983) Lattice diffusion of substitutional elements in iron and iron-base solid solutions. Technol. Rep. Tohoku. Univ. 48, 7-77.
  8. Sato A, Soma K, Chishima E, and Mori T (1982) Shape memory effect in $Y^{\rightarrow}_{\leftarrow}{\epsilon}$ transformation in Fe-30Mn-1Si alloy. Acta Matall. 30, 1177-1183. https://doi.org/10.1016/0001-6160(82)90011-6
  9. Tomota Y, Strum M, and Morris J W (1987) The relationship between toughness and microstructure in Fe-high Mn binary alloys. Metall. Trans. A 18, 1073-1081. https://doi.org/10.1007/BF02668556
  10. Tong W P, Tao N R, Wang Z B, Lu J, and Lu K (2003) Nitriding iron at lower temperatures. Science 299, 686-688. https://doi.org/10.1126/science.1080216