Sajadifar, Seyed VahidYapıcı, Güney Güven2015-11-022015-11-0220152075-4701http://hdl.handle.net/10679/1002https://doi.org/10.3390/met5031315This work presents the mechanical behavior modeling of commercial purity titanium subjected to severe plastic deformation (SPD) during post-SPD compression, at temperatures of 600-900 °C and at strain rates of 0.001-0.1 s−1. The flow response of the ultra-fine grained microstructure is modeled using the modified Johnson-Cook model as a predictive tool, aiding high temperature forming applications. It was seen that the model was satisfactory at all deformation conditions except for the deformation temperature of 600 °C. In order to improve the predictive capability, the model was extended with a corrective term for predictions at temperatures below 700 °C. The accuracy of the model was displayed with reasonable agreement, resulting in error levels of less than 5% at all deformation temperatures.engrestrictedAccessarticle531315132700036264490001210.3390/met5031315Severe plastic deformationTitaniumEqual channel angular extrusion/pressingHigh temperatureUltra-fine grainedJohnson-Cook model2-s2.0-84938220465