Abstract
Iron–aluminium alloys display promising physical and mechanical properties. In this study, the effects of strain, strain rate and temperature on an Fe–8% Al were investigated. Hot torsion tests were performed in the temperature range 900–1100°C and strain rate range 0.1–10s−1. In this alloy, two types of dynamic recrystallization may operate during hot deformation: at high temperature and high strain rate, this alloy undergoes discontinuous dynamic recrystallization, whereas at lower temperature and strain rate, continuous dynamic recrystallization occurs.
Highlights
Iron–aluminium alloys display promising physical and mechanical properties
Hot torsion tests were performed in the temperature range 900–1100 °C and strain rate range 0.1–10 sÀ1
Two types of dynamic recrystallization may operate during hot deformation: at high temperature and high strain rate, this alloy undergoes discontinuous dynamic recrystallization, whereas at lower temperature and strain rate, continuous dynamic recrystallization occurs
Summary
Iron–aluminium alloys display promising physical and mechanical properties. In this study, the effects of strain, strain rate and temperature on an Fe–8% Al were investigated. In order to characterize the mechanisms occurring during dynamic recrystallization of the hot deformed Fe–8% Al alloy, hot torsion tests were performed in a direction involving a negative shear and under argon atmosphere to reduce the oxidation phenomena, within the temperature range 900–1100 °C and strain rate range 0.1–10 sÀ1.
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