Quantitative Phase-Field Crystal Modeling of Solid-Liquid Interfaces for FCC Metals

Abstract

This work deals with the quantification and application of the modified two-mode phase-field crystal model (M2PFC; Asadi and Asle Zaeem, 2015) for face-centered cubic (FCC) metals at their melting point. The connection of M2PFC model to the classical density functional theory is explained in this article. M2PFC model in its dimensionless form contains three parameters (two independent and one dependent) which are determined using an iterative procedure based on the molecular dynamics and experimental data. The quantification process and computer simulations are performed for Ni and Al as two case studies. The quantitative M2PFC models are used in series of numerical simulations to determine the two-phase FCC-liquid coexisting and the bulk properties at the melting points of Ni and Al. The calculated and predicted properties are the expansion in melting, elastic constants, solid-liquid interface free energy, and surface anisotropy, which are also compared with their available experimental or computational counterparts in the literature.

Department(s)

Materials Science and Engineering

Research Center/Lab(s)

Center for High Performance Computing Research

Keywords and Phrases

Aluminum; Computation Theory; Density Functional Theory; Free Energy; Liquids; Melting Point; Molecular Dynamics; Nickel; Phase Transitions; Solidification; Bulk Properties; Face-Centered Cubic; Face-Centered-Cubic (Fcc) Metals; Phase Field Crystal Model; Phase-Field Crystals; Solid-Liquid Interfaces; Surface Anisotropy; Three Parameters; Phase Interfaces

International Standard Serial Number (ISSN)

0927-0256

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2017 Elsevier B.V., All rights reserved.

Publication Date

01 Feb 2017

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