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Intercritical Annealing Behaviour of an Ultrafine Grained C-Mn Steel Obtained by Hot Torsion Deformation

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Abstract:

Several studies concerning ferrite grain refinement have been developed in recent the last years due to the recognised influence of such microstructures on steels properties. This work was focused on the evaluation of the microstructure and mechanical properties of an ultrafine grained CMn steel obtained by hot torsion deformation and intercritical annealing. After 5 min soaking at 900 and 1200°C, the samples of low carbon steel were quenched and then reheated. Hot torsion deformation was conducted at temperatures of 700 or 740°C. The torsion schedule consisted of 7 isothermal passes leading to a total true strain of ≈1 and generating an ultrafine and inhomogeneous microstructure with grain sizes of the order of 1-m, formed by strain-induced dynamic transformation (SIDT). The samples were heated up to 800oC and held for 1, 2 and 3 h. A more homogeneous microstructure and ferrite grain size were obtained after annealing The microhardness tests showed the reduction in hardness with the increase in annealing time. They also highlighted the effects of the ferrite grain size and the volume fractions of the microstructure constituents.

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Periodical:

Materials Science Forum (Volume 550)

Pages:

471-476

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.550.471

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Online since:

July 2007

Authors:

G. Azevedo, Ronaldo Barbosa, Elena V. Pereloma, Dagoberto Brandão Santos

Keywords:

Intercritical Annealing, Torsion Testing, Ultra-Fine Ferrite

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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References

[1] R.Z. Valiev, A.V. Korznikov, R.R. Mulyukov, Mat. Sci. & Eng. A, Vol. A168 (1993), p.141.

Google Scholar

[2] Y. Saito, H. Utsunomiya, N. Tsuji, T. Sakai, Acta Mat. Vol. 47 (1999), p.579.

Google Scholar

[3] R. Ueji, N. Tsuji, Y. Saito, Y. Minamino, ISUGS 2001, Fukuoka, Japan. p.222.

Google Scholar

[4] P.C. M Rodrigues, R. K. Brzuszek, D. B. Santos, ISUGS 2001 Fukuoka, Japan. p.138.

Google Scholar

[5] P.J. Hurley, B.C. Muddle, P.D. Hodgson, Met. and Mat. Trans. A, Vol. 33A (2002), p.2985.

Google Scholar

[6] J.W. Bowden, F.H. Samuel, J.J. Jonas, Met. and Mat. Trans. A, Vol. 22A (1991), p.2947.

Google Scholar

[7] L.N. Pussegoda, J.J. Jonas, ISIJ International, Vol. 31 (1991), p.278.

Google Scholar

[8] L.P. Karjalainen, T.M. Maccagno, J.J. Jonas, ISIJ Intern. Vol. 35 (1995), p.1523.

Google Scholar

[9] A.B. Cota, R. Barbosa and D.B. Santos, J. of Mat. Proc. Tech. Vol. 100 (2000), p.156.

Google Scholar

[10] S.B. Davenport, D.N. Hanlon, S. Van Der Zwaag. Scripta Mat. Vol. 46 (2002), p.413.

Google Scholar

[11] K.W. Andrews, JISI, vol. 203 (1965), p.721.

Google Scholar

[12] ASTM E562-83.

Google Scholar

[13] G. Azevedo, R. Barbosa, E.V. Pereloma, D.B. Santos, Mat. Science and Eng. A, Vol. 402 (2005), p.98.

Google Scholar

[14] R. Bengochea, B. López, I. Gutierrez, Met. and Mat. Trans., Vol. 29A (1998), p.417.

Google Scholar

[15] G.L. Kelly, P.D. Hodgson, 42nd MWSP Conf. Proc., Vol. 38, Toronto, Canada (2000), p.515.

Google Scholar

[16] Y. Choi , W. Y. Choo, D. Kwon, Scripta Mat., Vol. 45 (2001), p.1401.

Google Scholar

[17] H. Beladi, G. L. Kelly, A. Shokouhi, P. D. Hodgson. Mat. Science and Eng. A, Vol. 367 (2004), p.152.

Google Scholar

[18] M. Zhao, T. Hanamura, H. Qiu, K. Nagai, K. Yang., Scripta Mater., Vol. 54 (2006), p.1385.

Google Scholar

[19] S. Takaki, K. Kawasaki, Y. Kimura, J. of Mat. Proc. Technol, Vol. 117 (2001) p.359.

Google Scholar

[20] T. Hayashi, M. Saito, K. Tsuzaki, K. Nagai, 4th International Conference On Recrystallization And Related Phenomena (Rex'99). Conf. Proc. JIM, Tsukuba, Japan (1999) p.333.

Google Scholar

[21] N. Tsuji, R. Ueji, Y. Minamino, Y. Saito, Scripta Mat., Vol. 46 (2002), p.305.

Google Scholar

[22] I.B. Timokhina, J.J. Jonas, E.V. Pereloma., ISIJ Int. 45 (2005), p.867.

Google Scholar