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A Criterion for Conventional Dynamic Recrystallization: Application to Magnesium Alloys

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Abstract:

An analytical approximation for the steady state dynamic recrystallized grain size is combined with a simple nucleation criterion to assess the propensity for dynamic recrystallization. In line with observation, the criterion predicts dynamic recrystallization in 99.9995% pure Al but not in material 99.5% pure. It also agrees with the observation that zone refined ferrite can display dynamic recrystallization at high temperatures and low strain rates but not at lower hot working temperatures. The criterion is applied here to common wrought magnesium alloys to argue that conventional dynamic recrystallization is expected under "normal" hot working conditions.

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Periodical:

Materials Science Forum (Volume 550)

Pages:

369-374

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.550.369

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Online since:

July 2007

Authors:

Matthew R. Barnett, Aiden G. Beer

Keywords:

Dynamic Recrystallization (DRX), Hot Working, Magnesium Alloy, Nucleation

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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