Microstructural Evolution in Elastically-stressed Solids: A Phase-field Simulation

R Sankarasubramanian

doi:10.14429/dsj.61.651

R Sankarasubramanian Scientist

DOI: https://doi.org/10.14429/dsj.61.651

Keywords: Microstructural evolution, phase-field simulation, elastic stress effect, simulation, microstructures

Abstract

Simulation of microstructures under different processing conditions is important for fine- tuning the processing window as well as to understand the mechanisms. Phase field simulation has gained importance for problems with diffuse interfaces. Since in this simulation, thermodynamic driving forces (chemical as well as non-chemical) and kinetic constraints have been naturally incorporated, it has the potential to simulate microstructures under different processing and service conditions. In this paper, DMRL's initiatives on using phase field simulations to understand microstructural evolution in both the phase separating and precipitating model systems have been presented. The influence of misfit stresses on the morphology of microstructures has been described. Output from actual thermodynamic calculations can be combined with these simulations to study systems of technological importance.

Defence Science Journal, 2011, 61(4), pp.383-393, DOI:http://dx.doi.org/10.14429/dsj.61.651

Author Biography

R Sankarasubramanian, Scientist

Dr R. Sankarasubramanian completed his integrated ME and PhD from the Department of Metallurgy, Indian Institute of Science, Bengaluru, in 1994 and 2000, respectively. Presently, he is working as Scientist D at the Defence Metallurgical Research Laboratory (DMRL) and his research interest is multi-scale materials modelling and simulation.