Title
Phase-Field Investigation Of Multicomponent Diffusion In Single-Phase And Two-Phase Diffusion Couples
Keywords
Computation; Interdiffusion; Microstructure; Multi-component diffusion; Phase field modeling; Thermodynamics; Zero flux planes
Abstract
Interdiffusion in hypothetical ternary single-phase and two-phase diffusion couples are examined using a phase-field model by numerically solving the nonlinear Cahn-Hilliard and Ginz-burg-Landau equations. For diffusion couples assembled with a regular single-phase solution, constant chemical mobilities were used to examine the development of concentration profiles including uphill diffusion and zero-flux plane. Zero-flux plane for a component was observed to develop for a diffusion couple at the composition that corresponds to the activity of that component in one of the terminal alloys. Experimental thermodynamic parameters and composition-dependent chemical mobilities were used to examine the morphological evolution of the interphase boundary in solid-to-solid, two-phase diffusion couples. Instability at the interphase boundary was introduced initially (t = 0) by a small compositional fluctuation at the diffuse interface, and its evolution varied largely as a function of terminal alloys and related composition-dependent chemical mobility. © ASM International.
Publication Date
12-1-2006
Publication Title
Journal of Phase Equilibria and Diffusion
Volume
27
Issue
6
Number of Pages
676-683
Document Type
Article; Proceedings Paper
Personal Identifier
scopus
DOI Link
https://doi.org/10.1361/154770306X153738
Copyright Status
Unknown
Socpus ID
33845774298 (Scopus)
Source API URL
https://api.elsevier.com/content/abstract/scopus_id/33845774298
STARS Citation
Mohanty, R. R. and Sohn, Y., "Phase-Field Investigation Of Multicomponent Diffusion In Single-Phase And Two-Phase Diffusion Couples" (2006). Scopus Export 2000s. 8120.
https://stars.library.ucf.edu/scopus2000/8120