Recrystallization Behaviour in Twin-Roll Continuous Cast Al-Fe-Ni Alloy

Abstract:

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Factors controlling the recrystallization of a continuous cast Al-Fe-Ni alloy were investigated by analyzing microstructure, grain structure, texture, and electron backscattering patterns. The texture of an as-rolled sample heated at 400°C was similar to that of a sample at the reduction ratio of 50% after intermediate annealing at 550°C. The as-rolled samples had a strong (213)[36-4] (S-type) orientation that was changed to a strong (130)[3-12] (QQ-type) orientation by heating at 400°C. This recrystallization looks like continuous recrystallization. Discontinuous recrystallization due to particle-stimulated nucleation is suppressed by the fine dispersion of Al-Fe-Ni-Si particles that form during casing and intermediate annealing, and stabilize the grain and subgrain structure. We think that a course initial grain structure and moderate level of strain level are the important factors promoting continuous recrystallization in this alloy.

Info:

Periodical:

Materials Science Forum (Volumes 519-521)

Edited by:

W.J. Poole, M.A. Wells and D.J. Lloyd

Pages:

1635-1640

DOI:

10.4028/www.scientific.net/MSF.519-521.1635

Citation:

A. Niikura, A. Kawahara, G. Kimura, T. Doko, "Recrystallization Behaviour in Twin-Roll Continuous Cast Al-Fe-Ni Alloy", Materials Science Forum, Vols. 519-521, pp. 1635-1640, 2006

Online since:

July 2006

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$35.00

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