Texture Evolution in Invar® Deformed by Asymmetrical Rolling


Article Preview

Asymmetrical rolling, in which the circumferential velocities of the working rolls are different, is a method to impose shear deformation and in turn shear deformation texture to sheet through the thickness. The Invar® alloy has been deformed by asymmetrical rolling with a 84% thickness reduction. The texture of the deformed and annealed alloy was measured by X-ray diffraction at different levels through the thickness: upper side- middle- down side, with unidirectional rolling. The deformed texture is a copper type texture but the components were rotated about 5-7° around the Transverse Direction (TD) axis as compared to the ideal position of these components in the pole figure representation. During recrystallization, the rolling components (brass {011}<112>,copper {112}<111>, aluminum {123}<634>) decrease quickly whereas the cube component {001}<100> is preferentially developed after a short annealing time. However, the rolling components do not disappear completely after complete recrystallization (120 minutes annealing). As a consequence the final texture contains a high cube component and rolling components.



Edited by:

P. B. Prangnell and P. S. Bate




S. Chhann et al., "Texture Evolution in Invar® Deformed by Asymmetrical Rolling", Materials Science Forum, Vol. 550, pp. 551-556, 2007

Online since:

July 2007




[1] H. Goa, S.C. Ramalingam, G.C. Barber, G. Chen, J. Matter Proc. Technol., Vol. 124 (2002), p.178.

[2] J. Markowski, H. Dyja, M. Knapiński, A. Kawałek, J. Matter. Proc Technol., Vol. 138 (2003), p.183.

[3] Y. Hwang, G. Tzan, Int. J. Mech. Sci., Vol. 39 (1997), p.289.

[4] R. Shivpuri, P.C. Chen, C.W. Lau, Int. J. Mech. Sci., Vol. 30 (1988), p.625.

[5] A.B. Richelsen, Int. J. Mech. Sci., Vol. 39 (1997), p.1199.

[6] Z.Y. Jiang, H.T. Zhu, A.K. Tieu, J. Matter Proc. Technol., Vol. 162 (2005), p.512.

[7] A. Kawałek, J. Matter Proc. Technol., Vol. 155 (2004), p. (2033).

[8] H.S. Lee, D.N. Lee, Int. J. Mech. Sci., Vol. 43 (2001), p. (1997).

[9] O. Engler, Acta Mater., Vol. 48 (2000), p.4827.

[10] K. -H. Kim, D.N. Lee, Acta Mater., Vol. 49 (2001), p.2583.

[11] S. Zaefferer, T. Baudin, R. Penelle, Acta Mater., Vol. 49 (2001), p.1105.

[12] F. Julliard, Etude des mécanismes de recristallisation dans l'Invar®, Thèse Université Paris XI, Orsay, (2001).

[13] K. Pawlik, Phys. Stat. Sol. (b), Vol. 134 (1986), p.477.