@article{Cabrera_Al Omar_Prado_1997, title={Simulation of the hot flow behaviour of a médium carbón microalloyed steel. Part 3. Constitutive equations}, volume={33}, url={https://revistademetalurgia.revistas.csic.es/index.php/revistademetalurgia/article/view/849}, DOI={10.3989/revmetalm.1997.v33.i4.849}, abstractNote={According to the part 1 of this work the constitutive equations of the hot flow behaviour of a commercial microalloyed steel have been obtained. For this purpose, the uniaxial hot compression tests described in the part 2 were employed. Tests were carried out over a range of 5 orders of magnitude in strain rate and 300 °C of temperature. Experimental results are compared with the theoretical model introduced in the first part of this study. It is concluded that deviations between experimental and theoretical curves are lower than 10 %. It is shown that the classical hiperbolic sine constitutive equation described accurately the experimental behaviour provided that stresses are normalized by the Young’s modulus and strain rates by the self-diffusion coefficient. An internal stress must also be introduced in the latter equation when the initial grain size is fine enough.}, number={4}, journal={Revista de Metalurgia}, author={Cabrera, J. M. and Al Omar, A. and Prado, J. M.}, year={1997}, month={Aug.}, pages={215–228} }