Effect of heating rate on recrystallization of twin roll cast aluminum

Naiyu Sun; Burton R. Patterson; Jaakko P. Suni; Roger D. Doherty; Hasso Weiland; Puja Kadolkar; Craig A. Blue; Gregory B. Thompson

doi:10.1007/s11661-007-9367-3

Effect of heating rate on recrystallization of twin roll cast aluminum

Naiyu Sun
, Burton R. Patterson
, Jaakko P. Suni
, Roger D. Doherty
, Hasso Weiland
, Puja Kadolkar
, Craig A. Blue
, Gregory B. Thompson

National Security Sciences Directorate

Research output: Contribution to journal › Article › peer-review

26 Scopus citations

Abstract

The effect of heating rate on precipitation and recrystallization behavior in twin roll cast (TRC) AA3105 has been investigated by three different means: conventional air furnace, controlled infrared, and lead bath heating. Experimental results showed that as-recrystallized grain size decreased and became more equiaxed as the annealing heating rate increased. These results were explained via time-temperature-transformation (TTT) curves for both dispersoid precipitation and recrystallization. With the faster heating rate, recrystallization could occur before precipitation of Mn present in the unhomogenized TRC samples. At a heating rate of 50 °C/s, the material underwent grain growth after recrystallization at 500 °C. No sign of grain growth was observed in materials annealed with lower heating rates, 3 °C/s, 0.5 °C/s, and 0.01 °C/s, due to greater dispersoid precipitation.

Original language	English
Pages (from-to)	165-170
Number of pages	6
Journal	Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume	39
Issue number	1
DOIs	https://doi.org/10.1007/s11661-007-9367-3
State	Published - Jan 2008

Funding

The authors gratefully acknowledge research funding by the Department of Energy Grant No. DE-FC36-02ID14401 and the support from the Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Industrial Technologies, Advanced Industrial Materials Program, under Contract No. DE-AC05-00OR22725 with UT–Battelle, LLC.

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title = "Effect of heating rate on recrystallization of twin roll cast aluminum",

abstract = "The effect of heating rate on precipitation and recrystallization behavior in twin roll cast (TRC) AA3105 has been investigated by three different means: conventional air furnace, controlled infrared, and lead bath heating. Experimental results showed that as-recrystallized grain size decreased and became more equiaxed as the annealing heating rate increased. These results were explained via time-temperature-transformation (TTT) curves for both dispersoid precipitation and recrystallization. With the faster heating rate, recrystallization could occur before precipitation of Mn present in the unhomogenized TRC samples. At a heating rate of 50 °C/s, the material underwent grain growth after recrystallization at 500 °C. No sign of grain growth was observed in materials annealed with lower heating rates, 3 °C/s, 0.5 °C/s, and 0.01 °C/s, due to greater dispersoid precipitation.",

author = "Naiyu Sun and Patterson, \{Burton R.\} and Suni, \{Jaakko P.\} and Doherty, \{Roger D.\} and Hasso Weiland and Puja Kadolkar and Blue, \{Craig A.\} and Thompson, \{Gregory B.\}",

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T1 - Effect of heating rate on recrystallization of twin roll cast aluminum

AU - Sun, Naiyu

AU - Patterson, Burton R.

AU - Suni, Jaakko P.

AU - Doherty, Roger D.

AU - Weiland, Hasso

AU - Kadolkar, Puja

AU - Blue, Craig A.

AU - Thompson, Gregory B.

PY - 2008/1

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N2 - The effect of heating rate on precipitation and recrystallization behavior in twin roll cast (TRC) AA3105 has been investigated by three different means: conventional air furnace, controlled infrared, and lead bath heating. Experimental results showed that as-recrystallized grain size decreased and became more equiaxed as the annealing heating rate increased. These results were explained via time-temperature-transformation (TTT) curves for both dispersoid precipitation and recrystallization. With the faster heating rate, recrystallization could occur before precipitation of Mn present in the unhomogenized TRC samples. At a heating rate of 50 °C/s, the material underwent grain growth after recrystallization at 500 °C. No sign of grain growth was observed in materials annealed with lower heating rates, 3 °C/s, 0.5 °C/s, and 0.01 °C/s, due to greater dispersoid precipitation.

AB - The effect of heating rate on precipitation and recrystallization behavior in twin roll cast (TRC) AA3105 has been investigated by three different means: conventional air furnace, controlled infrared, and lead bath heating. Experimental results showed that as-recrystallized grain size decreased and became more equiaxed as the annealing heating rate increased. These results were explained via time-temperature-transformation (TTT) curves for both dispersoid precipitation and recrystallization. With the faster heating rate, recrystallization could occur before precipitation of Mn present in the unhomogenized TRC samples. At a heating rate of 50 °C/s, the material underwent grain growth after recrystallization at 500 °C. No sign of grain growth was observed in materials annealed with lower heating rates, 3 °C/s, 0.5 °C/s, and 0.01 °C/s, due to greater dispersoid precipitation.

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Effect of heating rate on recrystallization of twin roll cast aluminum

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