A material model is suggested, suitable for modelling the mechanical behaviour of aluminium sections, from directly after the extrusion and throughout the on-line quenching to room temperature. An experimental procedure is detailed, whereby all material parameters in the model can be determined by a single test. In the test, the specimen is subjected to a carefully prescribed load history in tension and compression during continuous cooling. Material parameters are determined for the AIMgSi alloy AA6060. Finally, the model is compared with conventional plasticity and viscoplasticity, and found to give much better accuracy.
Issue Section:
Technical Papers
1.
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2.
Ja¨rvstra¨t, N., and Tjo̸tta, S., 1995 “A Process Model for On-Line Quenching of Aluminium Extrusions,” accepted for publication in Metallurgical and Materials Transactions.
3.
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4.
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McCormick
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,” Acta Metallurgica et Materialia
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6.
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A.
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1991
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1988
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.
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