Grain Refinement Mechanisms of Plain C-Mn Steel by Super Short Interval Multi-Pass Rolling in Stable Austenite Region

Kaori Miyata; Masayuki Wakita; S. Fukushima; Toshiro Tomida

doi:10.4028/www.scientific.net/MSF.638-642.3406

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HomeMaterials Science ForumMaterials Science Forum Vols. 638-642Grain Refinement Mechanisms of Plain C-Mn Steel by...

Grain Refinement Mechanisms of Plain C-Mn Steel by Super Short Interval Multi-Pass Rolling in Stable Austenite Region

Abstract:

One of noble grain refinement methods to attain ferrite grain size of around 1m in plain C-Mn steel has been so-called super short interval multi-pass rolling (SSMR) process, which is characterized by finish-rolling above Ae3, extreme short interpass time and then rapid cooling. The transformation mechanisms are demonstrated by the microstructural observation of an fcc Ni-Fe model alloy and C-Mn steels. In the Ni-Fe alloy hot-rolled by SSMR, equiaxed and cellar array of dislocation walls with low and high angle misorientations are observed in shear directions without recrystallization. The average spacing between the dislocation walls in the Ni-Fe alloy is in good agreement with the ferrite grain size of the C-Mn steel by SSMR process. On the other hand, in the C-Mn steel quenched to bypass ferrite transformation, the fine ferrite nuclei have been identified along intra-granular shear directions in the quenched martensite. It is concluded that the dislocation substructure in heavily deformed austenite by SSMR process have high potency as inherited ferrite nucleation

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Materials Science Forum (Volumes 638-642)

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3406-3411

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.638-642.3406

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Online since:

January 2010

Authors:

Kaori Miyata, Masayuki Wakita, S. Fukushima, Toshiro Tomida

Keywords:

C-Mn Steel, Ferrite Transformation, Grain Refinement, Multi-Pass Rolling, Ni-Fe Alloy

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References

[1] E.O. Hall: Proc. Phy. Soc., 64B (1951), 747.

Google Scholar

[2] N.J. Petch: J. Iron Steel Inst., 174 (1953), 174.

Google Scholar

[3] T. Maki: Proc. of 7th ICTP, (2002), Yokohama, 1.

Google Scholar

[4] N. Tsuji, N. Kamikawa, and R. Ueji: Iron Steel, 40 (2005), Supplement, 85.

Google Scholar

[5] R. Priestner: Thermomechanical Processing of Microalloed Austenire, ed. By A.J. DeArdo, G.A. Rats, and P.J. Wary, TMS-AIME, Warrendale, PA, (1891), 455.

Google Scholar

[6] H. Yada, Y. Matsuura, and T. Senuma: Proc. Int. Conf. Martensitic Transformation, JIM, Sendai, (1986), 515.

Google Scholar

[7] R.D. Hodgson, M.R. Hickson, and R.K. Gibbs: Mater. Sci. Forum, 284-286 (1998), 63.

Google Scholar

[8] Y. Adachi, T. Tomida, and S. Hinotani: ISIJ Int., 40(2007), S194.

Google Scholar

[9] K. Miyata, M. Wakita, S. Fukushima, M. Eto, T. Sasaki, and T. Tomida: Mater. Sci. Forum, 539-543(2007), 4698.

DOI: 10.4028/www.scientific.net/msf.539-543.4698

Google Scholar

[10] T. Tomida, N. Imai, K. Miyata, S. Fukushima, M. Yoshida, M. Wakita, M. Etou, T. Sasaki, Y. Haraguchi, and Y. Okada: ISIJ Int. 48(2008), 1148-1157.

DOI: 10.2355/isijinternational.48.1148

Google Scholar

[11] M. Kiuchi: Proc. 1st Symp. on PROTEUS-PJ, NEDO, Tokyo, Japan, (2004), 1.

Google Scholar

[12] P.J. Huley, B.C. Middle, and P.D. Hodgson: Proc. Thermomechnical Processing of Steels. IOM Communications, London, UK, (2000).

Google Scholar