|About this Abstract
||Materials Science & Technology 2019
||Controlled Synthesis, Processing, and Applications of Structural and Functional Nanomaterials
||Phase-field Modeling of Self-organization in Physical Vapor-deposited Alloy Films with Coherent Elastic Misfit
||Rahul Raghavan, Kumar Ankit
|On-Site Speaker (Planned)
Elastic interactions arising from a difference of lattice spacing between two coherent phases have a strong influence on the phase separation behavior of alloys. It is known that these elastic interactions may accelerate, slow down or even stop the phase separation process. However, our understanding of the role of misfit strains in modulating the phase-separated morphologies in vapor deposited films is currently limited. Here, we develop a phase-field model which incorporates the multiphysics of interface capillarity and coherency strains to computationally simulate the nanostructural evolution in vapor deposited films. We analyze the influence of lattice mismatch, deposition rate, and temperature on the film morphology. Insights gained from our computations will demonstrate the model's viability in predicting experimentally observed morphologies and supplement our understanding of the competing nature of phase separation and lattice strains.
||Definite: At-meeting proceedings