Martensite Midrib in an Fe-1C-17Cr Stainless Steel

Abstract:

An Fe-1.0C-17Cr (wt.%) stainless steel was subjected to subzero treatment to investigated the structure of martensite midrib. The midrib region appeared in the thin plate and lenticular martensites have been observed detailed by TEM. The TEM result reveals that the transformations of thin plate martensite and lenticular martensite are initiated at the same midrib region. The former keeps the lattice-invariant deformation mode of twinning during subsequent growth, whereas the latter combines both twinning and slip modes. Midrib region is a preferential position for carbide precipitations after tempering. M₃C and M₂₃C₆ carbide were found in this alloy, and related to the ferrite by Bagaryatsky OR and K-S OR, respectively.

• Periodical: Solid State Phenomena (Volumes 172-174)
• Pages: 67-72
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.172-174.67
• Online since: June 2011
• Authors: Jer Ren Yang, Hsin Yi Lee, Hung Wei Yen, Hsiao Tzu Chang
• Keywords: Lenticular Martensite, Martensite Midrib, Stainless Steel (SS), TEM, Thin Plate Martensite

References

[1] T. Maki, S. Shimooka and I. Tamura: Metall. Trans. Vol. 2 (1971), p.2944.

[2] K. Shimizu and Z. Nishiyama: Metall. Trans. Vol. 3 (1972), p.1055.

[3] R.L. Patterson and C.M. Wayman: Acta Metall. Vol. 14 (1966), p.347.

[4] K. Shimizu, M. Oka and C.M. Wayman: Acta Metall. Vol. 19 (1971), p.1.

[5] T. Kakeshita, K. Shimizu, T. Maki and I. Tamura: Scripta Metall. Vol. 14 (1980), p.1067.

[6] K. Shimizu, M. Oka and C.M. Wayman: Acta Metall. Vol. 18 (1970), p.1005.

[7] A. Shibata, S. Morito, T. Furuhara and T. Maki: Scripta Mater. Vol. 53 (2005), p.597.

[8] T.N. Durlu: J. Mater. Sci. Lett. Vol. 16 (1997), p.1307.

[9] A. Shibata, T. Murakami, S. Morito, T. Furuhara and T. Maki: Mater. Trans. Vol. 49 (2008), p.1242.

[10] A. Shibata, S. Morito, T. Furuhara and T. Maki: Acta Mater. Vol. 57 (2009), p.483.