Miral Verma¹, Rajdip Mukherjee¹; ¹Indian Institute of Technology Kanpur

In this work, a 3-dimensional phase-field model is proposed to simulate grain growth behavior in porous materials. Grain growth in porous materials depends upon the interaction between the grain boundary and pores. The interaction is affected by parameters such as pore size, shape and orientation. The surface energy anisotropy in pore can contribute towards polygonal shapes of pores which significantly changes the dragging force. In polycrystalline solid, pore shape is also dependent upon the surface mobility at pore-grain interface. In the present model, pores are not assumed to be stationary, so with sufficient surface mobility pore attachment and detachment and pore coalescence are also possible. Moreover, we are using active parameter tracking (APT) algorithm which allows us to simulate a large number of grains for better statistics without increasing further memory consumption or computational time.