Microstructure and Texture Evolution in a Cold-Rolled High Mn Steel with Microadditions of Ti and Nb

Abstract:

The aim of this work was the microstructure and texture analysis of a deformed via cold-rolling 24.5Mn-3.5Si-1.5Al-Ti-Nb TWIP/TRIP type steel. It was found, that during cold plastic deformation a phase transformation of austenite into martensite takes place. The transformation progress was confirmed by the microscopic investigations. The texture of austenite is characterized by a limited α₁=||RD fibre and the γ=||ND fibre. The texture of austenite changed with increasing deformation rate. In the texture of deformed austenite the strongest orientation is the {110} Goss orientation, which belongs to the α=||ND orientation fibre. During cold plastic deformation γ→ε and γ→ε→α’ phase transformations as well as the deformation of γ, ε and α’ phases are taking place in the steel. The formed ε phase (hexagonal structure) also possesses a distinct texture.

• Periodical: Solid State Phenomena (Volumes 203-204)
• Pages: 71-76
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.203-204.71
• Online since: June 2013
• Authors: Sławomir Kołodziej, Joanna Kowalska, Wiktoria Ratuszek, Wojciech Ozgowicz, Krzysztof Chruściel
• Keywords: Austenite, Deformation, High-Manganese Steel, Martensite, Microstructure, Texture, Transformation, TRIP Effect

References

[1] D. Barbier, N. Gey, S. Allain, N. Bozzolo, M. Humbert: Mater. Sci. Eng. A vol. 500 (2009), p.196

[2] S. Allain, J.P. Chateau , O. Bouaziz, S. Migot, N. Guelton: Mater. Sci. Eng. A vol. 387-389 (2004), p.158

[3] L. Remy, A. Pineau, Mater. Sci. Eng vol. 28 (1977), p.99–107

[4] G. Frommeyer, U. Brüx, P. Neumann, ISIJ Int. vol. 43 (2003), p.438–446

[5] Grajcar, M. Opiela, G. Fojt-Dymara: Arch. Civ. Mech. Eng. vol. IX, No. 3 (2009), p.49

[6] L.A. Dobrzański, W. Borek, M. Ondrula: J. Achiev. Mater. Manufac. Eng. vol. 53/2 (2012), p.59

[7] D. Zamani, A. Najafizadeh, H. Monajati, G. Razavi: Inter. Journ. Appl. Phys. Math. vol. 1, no. 3 (2011) p.195

[8] M. Koyama, T. Sawaguchi, T. Lee, C.S. Lee, K. Tsuzaki: Mater. Sci. Eng. A vol.528 (2011), p.7310

[9] S. Kołodziej, J. Kowalska, W. Ratuszek, K. Chruściel, W. Ozgowicz, A. Grajcar: XXXIX Szkoła Inżynierii Materiałowej, Kraków-Krynica, (2011), p.61

[10] Y. Lü, B. Hutchinson, D.A. Molodov, G. Gottstein: Acta Mater. vol. 58 (2010), p.3079

[11] A.A. Saleh, E.V. Pereloma, A.A. Gazder: Mater. Sci. Eng. A vol. 528 (2011), p.4537

[12] F. Lecroisey and A. Pineau, Metal. Trans., 1972, Vol.3, p.387