Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Combined model of dislocation motion with thermally activated and drag-dependent stages
Autore:
Hiratani, M; Nadgorny, EM;
Indirizzi:
Michigan Technol Univ, Dept Phys, Houghton, MI 49931 USA Michigan Technol Univ Houghton MI USA 49931 Phys, Houghton, MI 49931 USA
Titolo Testata:
ACTA MATERIALIA
fascicolo: 20, volume: 49, anno: 2001,
pagine: 4337 - 4346
SICI:
1359-6454(200112)49:20<4337:CMODMW>2.0.ZU;2-P
Fonte:
ISI
Lingua:
ENG
Soggetto:
LOW-TEMPERATURE PLASTICITY; SIMULATION; INERTIA;
Keywords:
metals; dislocations (mobility and theory); thermally activated processes; dynamic phenomena;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
35
Recensione:
Indirizzi per estratti:
Indirizzo: Nadgorny, EM Michigan Technol Univ, Dept Phys, Houghton, MI 49931 USA Michigan Technol Univ Houghton MI USA 49931 on, MI 49931 USA
Citazione:
M. Hiratani e E.M. Nadgorny, "Combined model of dislocation motion with thermally activated and drag-dependent stages", ACT MATER, 49(20), 2001, pp. 4337-4346

Abstract

A computational model is developed to study the effect of coupling of thermally activated and drag-dependent processes during dislocation motion through an array of obstacles in metals. The model explicitly includes three successive. reiterative stages typical of such motion: the thermally activated break-off from an equilibrium position accelerated drag-dependent motion;and the transition to the next equilibrium position controlled by the two previous stages. Calculation results are presented over a wide range of dislocation velocities, applied stresses and temperatures for a prototype f.c.c. metal close to copper. The presented model is also the first step for explaining quantitatively experimental findings regarding the effects of the SN transition on dislocation motion and plasticity in superconductors. (C) 2001 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/12/20 alle ore 13:03:48