title: Phase-field-crystal study of solute trapping.
abstract: In this study we have incorporated two time scales into the phase-field-crystal model of a binary alloy to explore different solute trapping properties as a function of crystal-melt interface velocity. With only diffusive dynamics, we demonstrate that the segregation coefficient, K as a function of velocity for a binary alloy is consistent with the model of Kaplan and Aziz where K approaches unity in the limit of infinite velocity. However, with the introduction of wavelike dynamics in both the density and concentration fields, the trapping follows the kinetics proposed by Sobolev [Phys. Lett. A 199, 383 (1995)], where complete trapping occurs at a finite velocity.
authors.affiliation: Department of Materials Science and Engineering and Brockhouse Institute for Materials Research, McMaster University, 1280 Main Street West, Hamilton, Canada L8S-4L7.
authors.forename: Harith
authors.initials: H
authors.lastname: Humadi
authors.forename: Jeffrey J
authors.initials: JJ
authors.lastname: Hoyt
authors.forename: Nikolas
authors.initials: N
authors.lastname: Provatas
mesh_terms: D000497:Alloys / Q000737:chemistry*; D003198:Computer Simulation; D003460:Crystallization / Q000379:methods*; D008956:Models, Chemical; D008958:Models, Molecular; D012995:Solubility; D012996:Solutions / Q000737:chemistry*
chemical_list: D000497:Alloys; D012996:Solutions