Paper Titles

Modelling Strain Induced Precipitation of Niobium Carbonitride during Multipass Deformation of Austenite
p.3

A New Model for Interpass Softening Based on the Strain Hardening Rate Prior to Unloading
p.15

A New Frontier in Microalloying: Advanced High Strength, Coated Sheet Steels
p.27

Grain Refinement in Steels through Thermomechanical Processing
p.39

Thin Slab Direct Rolling of Microalloyed Steels
p.49

High Performance Bainitic Steels
p.63

Precipitation of Microalloy Carbo-Nitrides Prior, during and after γ/α Transformation
p.75

New Microalloyed Steel Applications for the Automotive Sector
p.87

Microalloying of Cold-Formable Multi Phase Steel Grades
p.97

HomeMaterials Science ForumMaterials Science Forum Vols. 500-501Grain Refinement in Steels through...

Grain Refinement in Steels through Thermomechanical Processing

Article Preview

Abstract:

The development of ultrafine grained microstructures in steels has received considerable attention in recent times. In many cases the aim is to produce high strength structural steels with minimal alloying. It is well established that for an equiaxed ferrite with a uniform dispersion of second phase, both the strength and toughness will be markedly improved if the grain size can be reduced to 1-2 µm, from the typical range of 5-10 µm. Means of achieving this through dynamic strain induced transformation are examined here, following a brief overview of some of the key issues encountered when attempting to refine the austenite in existing mill configurations. A number of deformation microstructure maps are developed to aid the discussion.

You might also be interested in these eBooks

Microalloying for New Steel Processes and Applications

Info:

Periodical:

Materials Science Forum (Volumes 500-501)

Pages:

39-48

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.500-501.39

Citation:

Cite this paper

Online since:

November 2005

Authors:

Peter Hodgson, Hossein Beladi, Matthew R. Barnett

Keywords:

Dynamic Strain-Induced Transformation, Recrystallization, Ultrafine Grained Steel

Export:

RIS, BibTeX

Price:

Permissions:

Request Permissions

[1] F.H. Samuel, S. Yue, J.J. Jonas and K.R. Barnes: ISIJ Inter., Vol. 30 (1990), p.216.

[2] R. Kaspar, J.S. Disti and O. Pawelski: Steel Research, Vol. 59 (1988), p.421.

[3] R. Kaspar, P. Flüp and O. Pawelski: Steel Research, Vol. 60 (1989), p.566.

[4] G.L. Kelly and P.D. Hodgson: in J. J. Jonas Symposium, Thermomechanical Processing of Steel (CIM, Montreal, Canada 2000), p.335.

[5] R. Priestner and A. K. Ibraheem: Mater. Sci. Technol., Vol. 16 (2000), p.1267.

[6] M. Niikura, Y. Hagiwara, K. Nagai, K. Tsuzaki and S. Takaki: in Inter. Symp. on Ultrafine Grained Steels (Fukuoka, Japan 2001), p.26.

[7] T. Yokota, K. Sato and M. Niikura: in Inter. Symp. on Ultrafine Grained Steels (Fukuoka, Japan 2001), p.116.

[8] A. Najafi-Zadeh, J.J. Jonas and S. Yue: Metall. Trans. A, Vol. 23 (1992), p.2607.

[9] J. Baczynski and J.J. Jonas: Metall. Trans. A, Vol. 29 (1998), p.447.

[10] N. Tsuji, Y. Satio and T. Maki: in Recrystallization 99 (JIM, Tsukuba, Japan 1999), p.253.

[11] R. Pandi and S. Yue: ISIJ Inter., Vol. 34 (1994), p.270.

[12] R. Ueji, N. Tsuji, Y. Minamino and Y. Koizumi: Acta Mater., Vol. 50 (2002), p.4177.

[13] N. Tsuji, R. Ueji, Y. Minamino and Y. Saito: Scri. Mater., Vol. 46 (2002), p.305.

[14] L. Storojeva, R. Kaspar and D. Ponge: ISIJ Inter., Vol. 44 (2004), p.1211.

[15] R. Song, D. Ponge, D. Raabe and R. Kaspar: Acta Mater., Vol. 53 (2005), p.845.

[16] J.H. Beynon, R. Gloss and P.D. Hodgson: Mater. Forum, Vol. 16 (1992), p.37.

[17] M.R. Hickson, R.K. Gibbs and P.D. Hodgson: ISIJ Inter., Vol. 39 (1999), p.1176.

[18] H. Beladi, G.L. Kelly, A. Shokouhi and P.D. Hodgson: Mater. Sci. Eng. A, Vol. 367 (2004), p.152.

[19] W-Y. Choo, K.K. Um, J.S. Lee, D.H. Seo and J. K. Choi: in Inter. Symp. on Ultrafine Grained Steels (Fukuoka, Japan 2001), p.2.