Bi-Velocity Phase Field Method

Bartek Wierzba; Marek Danielewski; Andrzej Nowotnik; Jan Sieniawski

doi:10.4028/www.scientific.net/DDF.333.83

Paper Titles

Anisotropy of Hydrogen Diffusivity in ZnO
p.39

Diffusion Processes in Early Stages of Precipitation in Mg-Gd and Mg-Tb Alloys
p.51

Design and Development of Nb-W-Mo Alloy Membrane for Hydrogen Separation and Purification
p.61

Calculating of Diffusion Profiles in Ternary Systems Using Effective Interdiffusion Coefficients of Components
p.73

Bi-Velocity Phase Field Method
p.83

The Influence of Yttrium on Kinetics and Mechanism of Chromia Scale Growth on Fe-Cr-Ni Base Steels
p.91

Magnetically Controlled Grain Boundary Migration and Microstructure Evolution in Zn
p.101

Microstructure and Mechanical Properties of Directionally Solidified Unmodified and Ni-Modified Sn-0.7wt%Cu Lead-Free Solder Alloy
p.107

Diffusion of Particles Adsorbed on a Patchwise Surface
p.117

HomeDefect and Diffusion ForumDefect and Diffusion Forum Vol. 333Bi-Velocity Phase Field Method

Bi-Velocity Phase Field Method

Abstract:

In this paper we couple the bi-velocity with the phase field method. It deals with: (1) the different mobility of the components in the two-phase zone; (2) nonzero steps of molar volumes for each component from phase to phase and (3) the composition dependent interdiffusion coefficients. The method allows to determine the average stress field during the diffusion process, the kinetics of the reactions and estimate the entropy production. The paper presents the numerical computations of diffusion in th eNiAlCr system. The results can serve as a basis in designing gradient coatings of extended life time.