Retention of the ‹001› Fiber Texture for Fe-Si Electric Motor Steels


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The ideal sheet texture for electric motor steels, the λ fiber, with 〈001〉 normal to the rolling plane, that can be produced by directional solidification, is largely lost by the required heavy rolling reduction and recrystallization needed to produce thin motor laminations. However by two successive light rolling reductions, followed in each case by recrystallization, the desired texture was largely recovered. Taylor and finite element modeling supported the hypothesis for this successful processing: the low Taylor factor of the λ fiber grains. Although starting from similar grain sizes, the second light deformation produced a much larger recrystallized grain size than did the first light deformation. This result suggests that a lower average Taylor factor in the structure before deformation, resulting in lower stored energy, can increase the recrystallized grain size.



Edited by:

P. B. Prangnell and P. S. Bate




R. D. Doherty et al., "Retention of the ‹001› Fiber Texture for Fe-Si Electric Motor Steels", Materials Science Forum, Vol. 550, pp. 497-502, 2007

Online since:

July 2007




[1] N.P. Goss: Transaction of the Metallurgical Society of AIME, Vol. 23 (1935), p.511.

[2] K. Honda, S. Kaya: Sci. Rep. Tohoku Univ., Vol. 15 (1926), p.721.

[3] A.D. Rollett, M.L. Storch, E.J. Hilinski, S.R. Goodman: Metall. Mater. Trans. A, Vol. 32A (2001), p.1.

[4] N. Tesla: A New System of Alternating Current Motors and Transformers, (AIEE, USA 1888).

[5] H.J. Fisher, J.L. Walter: Transaction of the Metallurgical Society of AIME, Vol. 224 (1962), p.1271.

[6] T. Yonamine, F.J.G. Landgraf: Approaching (100)〈0vw〉 by Rolling Directionally Solidified Silicon Steel (16th Soft Magnetic Materials Conference, Germany 2003, p.131).

DOI: 10.1002/srin.200506039

[7] I.L. Dillamore, P.L. Morris, C.J.E. Smith, W.B. Hutchinson: Proc. R. Soc. Lon. A, Vol. 329 (1972), p.405 and I.L. Dillamore, C.J.E. Smith, T.W. Watson: Metal Sci., Vol. 1 (1968), p.193.

[8] P.A. Beck, P.R. Sperry: J. App. Physic, Vol. 21 (1950), p.150.

[9] Y. Inokuti, R.D. Doherty: Texture of Crystalline Solids, Vol. 2 (1977), p.143.

[10] S. Panchanadeeswaran, R.D. Doherty and R. Becker: Acta Mater., Vol. 44 (1996), p.1233.

[11] S.R. Kalidindi, A. Bhattacharyya, R.D. Doherty: Proc. R. Soc. Lond. A, Vol. 460 (2004), p. (1935).

[12] F.J. Humphreys, M. Hatherly: Recrystallization and Related Annealing Phenomena (Pergamon Press, Oxford 1995).

[13] R.D. Doherty, D.A. Hughes, F.J. Humphreys, J.J. Jonas, D. Juul Jensen, M.E. Kassner, W.E. King, T.R. McNelley, H.J. McQueen, A.D. Rollett: Mater. Sci. Eng. A, Vol. A238 (1997), p.219.

DOI: 10.1016/s1369-7021(98)80046-1

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