Abstract
The definition of high temperature models of materials is crucial to perform simulations of hot sheet metal forming processes, especially in the case of incremental sheet metal forming processes. In this research work, the behavior of the Ti6Al4V alloy has been studied by means of tensile tests in a wide range of temperatures. After this, the validity of four classical constitutive models has been analyzed: Johnson-Cook (J-C), modified Johnson-Cook (mod J-C), Fields-Backofen (F-B) and modified Arrhenius (mod-Arr). It has been concluded that the modified Arrhenius model gets the best fit, but, however, it is not fully valid due to its difficulty to respond to the phenomena of material softening at high temperature.
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