Abstract
In present study, the flow behaviour and constitutive equation of Thixocast A356 Al alloy has been studied using hot compression test at 450°C, 500°C, 540°C under the strain rates of 0.0001 sec−1, 0.0005 sec−1, 0.001 sec−1, 0.01 sec−1. The compression flow curves exhibited an initial sharp increase with strain followed by a moderate work-hardening behaviour. The maximum stress was decreased as the strain rate reduced and the temperature increased. At the lowest examined temperature (450°C) and the highest applied strain rate (0.01 sec−1), a flow softening behaviour was observed. This was attributed to the morphological changes of the present precipitates.
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Haghshenas, M., Zarei-Hanzaki, A., Fatemi-Varzaneh, S.M. et al. Hot deformation behaviour of Thixocast A356 aluminum alloy during compression at elevated temperature. Int J Mater Form 1 (Suppl 1), 1001–1005 (2008). https://doi.org/10.1007/s12289-008-0227-5
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DOI: https://doi.org/10.1007/s12289-008-0227-5