Effect of Nb and V in the Development of Texture and Plastic Strain Ratio in Low Carbon Microalloyed Steels Produced by A.S.T. Technology

Abstract:

The effects of Nb and V on the anisotropy and textures featuring the hot rolled low carbon microalloyed steels produced by A.S.T. (Arvedi Steel Technology) have been studied as a function of the final coiling temperatute Tcoiling. Mechanical properties and r-values for twelve steels have been determined through tensile tests performed on three main different directions: 0°, 45°, 90° to the rolling one. The samples have been analysed by EBSD (Electron Back Scattering Diffraction) to identify the textures developed during the process. The relations among the chemical composition of the steels (i.e. C, N, Nb, V contents), the mechanical properties, the temperature during the coiling operations, the textures and the formability properties have been pointed out.

• Periodical: Materials Science Forum (Volumes 500-501)
• Pages: 279-286
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.500-501.279
• Online since: November 2005
• Authors: Carlo Mapelli, Roberto Venturini, Antonio Guindani
• Keywords: Anisotropy, Coiling Temperature, Electron Backscatter Diffraction (EBSD), Mechanical Property, Niobium Microalloyed Steels, R-Values, Texture, Thin Slab Casting, Vanadium, Vanadium-Niobium

References

[1] T. Gladman: The Physical Metallurgy of Microalloyed Steels (Institute of Materials, Minerals and Mining, London 1997).

[2] A. Cracknell, N.J. Petch: Acta Metall. Vol. 3 (1955).

[3] F.B. Pickering, T. Gladman: Metallurgical Developments in Carbon Steels (Iron and Steel Institute, Special Report No. 81, 1963).

[4] ASM: Specialty Handbook: Carbon and Alloy Steels (ASM International, Material Park 1995).

[5] W.F. Hosford, R.M. Caddell: Metal Forming: mechanics and metallurgy (2nd edition, PTR Prentice Hall, 1993).

[6] M.A. Akoy, E.S. Kayali and H. Cimenoglu: ISIJ International Vol. 44 (2004), p.422.

[7] Y. Li, J. A. Wilson et al. : ISIJ International Vol. 44 (2004), p.1093.

[8] Standard ASTM E517-00, Standard Test Method for Plastic Strain Ratio r for Sheet Metal, (August 2000).

[9] W.B. Hutchinson, M. Hatherly: An introduction to texture in metals (Chameleon Press, London 1978).

[10] Ray R.K. et al: ISIJ International Vol. 34 (1994), p.27.

[11] T. Waterschoot, L. Kestens, and B.C. De Cooman: Metallurgical and Materials Transactions A Vol. 33A (2002), p.1091.

[12] U.F. Kocks, C.N. Tomé, H.R. Wenk: Texture and Anisotropy (Cambridge University Press, 2000).