Abstract. Integrated computational materials engineering (ICME) links physics-based models to predict performance of materials based on their processing history. The recrystallization phase field model is developed and parameterized for commercially pure titanium. Stored energy and nucleation of dislocation-free grains are added into a phase field grain-growth model. A two-dimensional simulation of recrystallization in titanium at 800°C was performed; the recrystallized volume fraction was measured from the simulated microstructures. Fitting the recrystallized volume fraction to the Avrami equation gives the time exponent n as 1.8 and the annealing time to reach 50% recrystallization (t0.5) as 71 s. As expected, the microstructure evolves faster when driven by stored energy than when driven by grain boundary energy.
IntroductionIntegrated computational materials engineering (ICME) is crucial in advancing material design and optimization. Linking models together will enable simulated parametric studies across length scales, incorporating microstructure into larger-scale component analysis. For example, simulations of static recrystallization are needed for the processing history of metals to be used in microstructural mechanical behavior simulations. As such, successful ICME requires accurate physics-based simulations that predict realistic microstructures.When metals undergo plastic deformation, a network of dislocations is formed within the microstructure. Increasing the applied stress provides an additional driving force for dislocation motion and creates more dislocations. The increased dislocation density results in a stored energy (f stored ) within the microstructure, which is approximated as [1]
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