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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 11    No. 3    June 2001

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Recrystallization model for
hot-rolling of 5182 aluminum alloy
ZHANG Hui(张  辉), PENG Da-shu(彭大暑),
YANG Li-bin(杨立斌), MENG Li-ping(孟力平)

Department of Materials Science and Engineering,
Central South University, Changsha 410083, P.R.China

Abstract:A recrystallization model for hot-rolling of 5182 aluminum alloy was presented by means of the fractional softening during double interval deformation. It is found that the recrystallization rate depends on strain rate more sensitively than deformation temperature, and the time for full recrystallization is very short as strain rate is greater than 1 s-1. Using the recrystallization—time—temperature curves, the desirable hot rolled microstructure can be obtained by controlling the rolling speed, temperature and cooling rate before cooling during the last pass in reversing mill.

 

Key words: 5182 aluminum alloy; hot-rolling; recrystallization; modeling; microstructure control

ISSN 1672-7029
CN 43-1423/U

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