An Analysis of the Forgeability of Ti-10V-2Fe-3Al β Titanium alloy using a combined Estrin Mecking and Avrami Material Constitutive Model

A constitutive model was developed to predict the high temperature sub-transus flow behavior of a metastable β Ti-10V-2Fe-3Al alloy, and its applicability for industrial scale forging process has been evaluated using finite element simulation. Cylindrical samples extracted from cogged billet alloy after recrystallisation treatment were subjected hot compression tests at temperatures ranging 720 °C 780 with an increment 15 under varying strain rates 0.025 0.2 s−1. The curves exhibited work hardening followed by dynamic recovery softening beyond equivalent peak stress. Formation low angle grain boundaries within prior grains phase observed contribute softening. based on Estrin Mecking Avrami methods minimised number material constants, data derived tests. successfully verified deformation behaviour measured in region interest. implemented into package as user subroutine billets during open die processes validated experimental trials. fairly good predictive capability more than 95% convergence achieved, confirming suitability predicting forgeability forging.