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3D Discrete Dislocation Modelling of High Temperature Plasticity

SYSNO ASEP	0359091
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	3D Discrete Dislocation Modelling of High Temperature Plasticity
Author(s)	Záležák, Tomáš (UFM-A)_{RID, ORCID} Dlouhý, Antonín (UFM-A)_{RID, ORCID}
Source Title	Key Engineering Materials - ISSN 1013-9826 Roč. 465, - (2011), s. 115-118
Number of pages	4 s.
Action	MSMF /6./ Materials Structure and Micromechanics of Fracture
Event date	28.06.2010-30.06.2010
VEvent location	Brno
Country	CZ - Czech Republic
Event type	WRD
Language	eng - English
Country	CH - Switzerland
Keywords	discrete dislocation dynamics ; high temperature deformation ; meso-scale simulations of plasticity ; diffusion
Subject RIV	BE - Theoretical Physics
R&D Projects	OC 162 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
CEZ	AV0Z20410507 - UFM-A (2005-2011)
UT WOS	000291704700023
DOI	10.4028/www.scientific.net/KEM.465.115
Annotation	A 3D model is presented that addresses an evolution of flexible dislocation lines at high temperatures. The model is based on the linear theory of elasticity. A smooth dislocation line is approximated by a piecewise curve composed of short straight dislocation segments. Each dislocation segment is acted upon by a Peach-Koehler force due to a local stress field. All segment-segment interactions as well as an externally applied stress are considered. A segment mobility is proportional to the Peach-Koehler force, temperature-dependent factors control climb and glide motion of the segments. The potential of the model is demonstrated in simulations of simple high temperature processes including interactions of dislocations with secondary particles.
Workplace	Institute of Physics of Materials
Contact	Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485
Year of Publishing	2011

Number of the records: 1