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Titolo:
Calculation of thermodynamic quantities of metals and alloys by the statistical moment method
Autore:
Hung, VV; Masuda-Jindo, K; Tam, PD; Nishitani, SR;
Indirizzi:
Hanoi Natl Pedag Univ, Hanoi, Vietnam Hanoi Natl Pedag Univ Hanoi Vietnam noi Natl Pedag Univ, Hanoi, Vietnam Tokyo Inst Technol, Dept Mat Sci & Engn, Yokohama, Kanagawa 2268503, JapanTokyo Inst Technol Yokohama Kanagawa Japan 2268503 anagawa 2268503, Japan Kyoto Univ, Dept Mat Sci & Engn, Kyoto 6068501, Japan Kyoto Univ Kyoto Japan 6068501 Dept Mat Sci & Engn, Kyoto 6068501, Japan
Titolo Testata:
JOURNAL OF PHASE EQUILIBRIA
fascicolo: 4, volume: 22, anno: 2001,
pagine: 400 - 405
SICI:
1054-9714(200108)22:4<400:COTQOM>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
ANHARMONIC CRYSTALS; CU-AU; SYSTEMS; AG;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
21
Recensione:
Indirizzi per estratti:
Indirizzo: Masuda-Jindo, K Hanoi Natl Pedag Univ, Hanoi, Vietnam Hanoi Natl Pedag Univ Hanoi Vietnam niv, Hanoi, Vietnam
Citazione:
V.V. Hung et al., "Calculation of thermodynamic quantities of metals and alloys by the statistical moment method", J PH EQUIL, 22(4), 2001, pp. 400-405

Abstract

The thermodynamic properties of metals and alloys are studied using the moment method in the statistical dynamics, which allows us to take into account the anharmonicity of thermal lattice vibrations and size mismatch of constituent atoms, going beyond the quasi-harmonic approximation. Within the fourth-order moment approximation, the free energy and equilibrium lattice spacing of the binary alloys are given explicitly in terms of the effective pair potentials and the second- and fourth-order vibrational constants. Thelong-range order (LRO) parameter eta and order-disorder transition temperatures (ODTs) T-c of binary alloys are obtained by solving the explicit transcendental equations. The numerical calculations of thermodynamic quantities for Cu3Au and beta -CuZn alloys show that the inclusion of the anharmonicity of lattice vibration plays an essentially important role in determiningthe phase stabilities of metals and alloys.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/12/20 alle ore 05:37:52