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Texture Evolution in Invar® Deformed by Asymmetrical Rolling

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Abstract:

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.

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Periodical:

Materials Science Forum (Volume 550)

Pages:

551-556

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.550.551

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Online since:

July 2007

Authors:

Sorphal Chhann, Denis Solas, Anne Laure Etter, Richard Penelle, Thierry Baudin

Keywords:

Asymmetrical Rolling, Invar®, Recrystallization, Texture

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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