Abstract
The hyperbolic-sine model is commonly used to describe the constitutional relation between the strain rate, temperature and the peak or steady-state stress. However, for the purpose of modeling of the hot deformation behavior, the strain should be taken into consideration. In this study, the hot deformation behavior of a high-Mn twinning-induced plasticity steel was studied by using isothermal compression tests conducted in the temperature range of 900 to 1150 °C and strain rate range of 0.001 to 20 s−1. Based on the hyperbolic-sine model, the constitutive equations of the steel were developed by using the flow stress data. The strain was introduced in the constitutive equations through the material constants α, n, Q and A. Comparison of the flow stresses based on the constitutive equations with those obtained from the tests suggests that the developed constitutive equations can give a precise modeling of the hot deformation behavior of the steel investigated.
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Di, H., Zhang, J., Wang, X. (2013). On the Constitutive Modeling of the Hot Deformation Behavior of a High-Mn Twinning-Induced Plasticity Steel. In: Marquis, F. (eds) Proceedings of the 8th Pacific Rim International Congress on Advanced Materials and Processing. Springer, Cham. https://doi.org/10.1007/978-3-319-48764-9_358
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DOI: https://doi.org/10.1007/978-3-319-48764-9_358
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-48586-7
Online ISBN: 978-3-319-48764-9
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