Modeling the Effect of Surface Energy on Stressed Grain Growth in Cubic Polycrystalline Bodies

• Main Authors: M., Jamshidian, P., Thamburaja, T., Rabczuk
• Format: Article
• Language: English
• Published: Elsevier Ltd 2016
• Subjects: TJ Mechanical engineering and machinery
• Online Access: http://umpir.ump.edu.my/id/eprint/11573/1/Modeling%20the%20Effect%20of%20Surface%20Energy%20On%20Stressed%20Grain%20Growth%20In%20Cubic%20Polycrystalline%20Bodies.pdf; http://umpir.ump.edu.my/id/eprint/11573/; http://dx.doi.org/10.1016/j.scriptamat.2015.11.005
• Institution: Universiti Malaysia Pahang

A recently-developed constitutive theory of stressed grain growth is augmented to include the effect of excess surface energy via a surface effect state variable. The new constitutive theory is implemented into a coupled finite-element and phase-field computational framework. Through three-dimensional simulations, the new constitutive model is shown to be capable of predicting the experimental data of the annealing-induced texture transition in polycrystalline copper thin films of different thicknesses attached to a polyimide substrate. Our simulations show that the grain growth driving force arising from the through-film thickness grain boundary curvature plays a prominent role in such a transitional behavior.