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Titolo:
Equilibrium at stationary solid-liquid interface during phase-field modeling of alloy solidification
Autore:
Kim, WT; Kim, SG; Lee, JS; Suzuki, T;
Indirizzi:
Chongju Univ, Ctr Noncrystalline Mat, Chongju 360764, South Korea Chongju Univ Chongju South Korea 360764 Mat, Chongju 360764, South Korea Chongju Univ, Dept Phys, Chongju 360764, South Korea Chongju Univ Chongju South Korea 360764 hys, Chongju 360764, South Korea Kunsan Natl Univ, Dept Mat Sci & Engn, Kunsan 573360, South Korea Kunsan Natl Univ Kunsan South Korea 573360 n, Kunsan 573360, South Korea Univ Tokyo, Dept Met, Tokyo 113, Japan Univ Tokyo Tokyo Japan 113Univ Tokyo, Dept Met, Tokyo 113, Japan
Titolo Testata:
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
fascicolo: 4, volume: 32, anno: 2001,
pagine: 961 - 969
SICI:
1073-5623(200104)32:4<961:EASSID>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
CRYSTAL-GROWTH; BINARY-ALLOYS; KINETICS; TRANSITIONS; COMPUTATION; DIFFUSION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
22
Recensione:
Indirizzi per estratti:
Indirizzo: Kim, WT Chongju Univ, Ctr Noncrystalline Mat, Chongju 360764, South Korea Chongju Univ Chongju South Korea 360764 ngju 360764, South Korea
Citazione:
W.T. Kim et al., "Equilibrium at stationary solid-liquid interface during phase-field modeling of alloy solidification", MET MAT T A, 32(4), 2001, pp. 961-969

Abstract

The phase-field parameters (coefficient of gradient energy and double-wellpotential height) were obtained for a binary solid-liquid (SL) interface with a finite thickness (thin interface). The parameters were compared with those obtained at a sharp interface condition in order to test the maintenance of equilibrium condition at a stationary SL interface. The phase-field parameters determined at the thin interface condition account for the chemical energy contribution to the interface energy. They reproduce the interface energy, interface thickness, and capillary effect during phase-field calculation at a wide interface thickness range, even though there still exists interface thickness limitation. The phase-field parameters at the sharp interface ignore the chemical energy contribution to the interface energy. When the interface thickness is small enough, the parameters generate the same interface energy and interface thickness as the corresponding input values since the chemical energy contribution increases with increasing interface thickness. However, regardless of interface models, the equilibrium shape of solid particles embedded in a liquid, obtained from the phase-field equation with different interface anisotropy constants, is in good agreement with theoretical two-dimensional (2-D) prediction. This is due to the equilibrium shape of solid particles being dependent only on anisotropy constant.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 20/01/20 alle ore 05:19:29