Catalogo Articoli (Spogli Riviste)
OPAC HELP
Titolo: A micromechanical model of phase boundary movement during solidsolid phase transformations
Autore: Fischer, FD; Oberaigner, ER;
 Indirizzi:
 Montan Univ, Inst Mech, A8700 Leoben, Austria Montan Univ Leoben Austria A8700 niv, Inst Mech, A8700 Leoben, Austria
 Titolo Testata:
 ARCHIVE OF APPLIED MECHANICS
fascicolo: 23,
volume: 71,
anno: 2001,
pagine: 193  205
 SICI:
 09391533(200103)71:23<193:AMMOPB>2.0.ZU;2O
 Fonte:
 ISI
 Lingua:
 ENG
 Soggetto:
 CUALNI; NUCLEATION; KINETICS;
 Keywords:
 phase transformation; driving force; moving boundary;
 Tipo documento:
 Article
 Natura:
 Periodico
 Settore Disciplinare:
 Engineering, Computing & Technology
 Citazioni:
 23
 Recensione:
 Indirizzi per estratti:
 Indirizzo: Fischer, FD Montan Univ, Inst Mech, Fronz Josef Str 18, A8700 Leoben, Austria Montan Univ Fronz Josef Str 18 Leoben Austria A8700 Austria



 Citazione:
 F.D. Fischer e E.R. Oberaigner, "A micromechanical model of phase boundary movement during solidsolid phase transformations", ARCH APPL M, 71(23), 2001, pp. 193205
Abstract
Understanding the kinetics of phase boundary movement is of major concern in e.g. martensitic transformation in related engineering applications. Themain goal of this paper is to develop such kinetics on the basis of thermodynamic principles at the material microlevel. After a short literature survey in the introduction, the jump condition and thermodynamic force on the interface are discussed based on laws of conservation and thermodynamics. This leads to a relation for the driving force of the transformation front. In particular, the propagating front of a phasetransforming sphere within an elasticplastic medium is considered. Due to density change, which is implicitly expressed in the transformation volume strain, strains and accompanying stresses are induced which hamper the propagation and influence the transformation kinetics. Together with the latent heat, the heat due to plastic dissipation occurs as a source term in the heat conduction equation. Since kinetics are influenced by temperature, the heat conduction equation and the kinetics equation are coupled. Using Green's function techniques, an integral equation is derived and solved numerically. The results of a parameter study are discussed.
ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 14/07/20 alle ore 12:47:59