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Author
dc.contributor.author
Groma, István 
Author
dc.contributor.author
M, Zaiser 
Author
dc.contributor.author
Ispánovity, Péter Dusán 
Availability Date
dc.date.accessioned
2016-10-10T09:11:30Z
Availability Date
dc.date.available
2016-10-10T09:11:30Z
Release
dc.date.issued
2016
Issn
dc.identifier.issn
2469-9950
uri
dc.identifier.uri
http://hdl.handle.net/10831/32425
Abstract
dc.description.abstract
Understanding the spontaneous emergence of dislocation patterns during plastic deformation is a long standing challenge in dislocation theory. During the past decades several phenomenological continuum models of dislocation patterning were proposed, but few of them (if any) are derived from microscopic considerations through systematic and controlled averaging procedures. In this paper we present a two-dimensional continuum theory that is obtained by systematic averaging of the equations of motion of discrete dislocations. It is shown that in the evolution equations of the dislocation densities diffusionlike terms neglected in earlier considerations play a crucial role in the length scale selection of the dislocation density fluctuations. It is also shown that the formulated continuum theory can be derived from an averaged energy functional using the framework of phase field theories. However, in order to account for the flow stress one has in that case to introduce a nontrivial dislocation mobility function, which proves to be crucial for the instability leading to patterning.hu_HU
Language
dc.language
Angol
Language
dc.language.iso
angolhu_HU
Contact information
dc.relation.ispartof
urn:issn:2469-9950
Title
dc.title
Dislocation patterning in a two-dimensional continuum theory of dislocationshu_HU
Type
dc.type
folyóiratcikk
Date Change
dc.date.updated
2016-10-03T09:50:56Z
Version
dc.description.version
megjelent változathu_HU
Language
dc.language.rfc3066
eng
Scope
dc.format.page
214110
Doi ID
dc.identifier.doi
10.1103/PhysRevB.93.214110
Wos ID
dc.identifier.wos
000378049700001
MTMT ID
dc.identifier.mtmt
3091092
Issue Number
dc.identifier.issue
21hu_HU
Journal
dc.identifier.jtitle
PHYSICAL REVIEW Bhu_HU
First Page
dc.identifier.spage
214110hu_HU
Volume Number
dc.identifier.volume
93hu_HU
access
dc.rights.access
hozzáférhetőhu_HU
Class
dc.type.genre
publikáció/alkotáshu_HU
Type
dc.type.resrep
tudományoshu_HU
Author
dc.contributor.inst
ELTE Természettudományi Kar Fizikai Intézet Anyagfizikai Tanszékhu_HU
Type
dc.type.type
folyóiratcikkhu_HU
Release Date
dc.description.issuedate
2016hu_HU
Author Details
dc.description.author
Groma, István : 10009023 (ELTE/TTK/Fiz_I/Anyagfizikai Tanszék)
Author Details
dc.description.author
Ispánovity, Péter Dusán : 10027552 (ELTE/TTK/Fiz_I/Anyagfizikai Tanszék)
department of Author
dc.contributor.institution
Eötvös Loránd Tudományegyetem
Author institution
dc.contributor.department
ELTE/TTK/Fiz_I/Anyagfizikai Tanszék
Author institution
dc.contributor.department
ELTE/TTK/Fiz_I/Anyagfizikai Tanszék
Author MTMT ID
dc.contributor.mtmtid
10009023
Author MTMT ID
dc.contributor.mtmtid
10027552
Uploader's email
dc.description.submitteremail
ispanovity@metal.elte.hu
Uploader Name
dc.description.submittername
Ispánovity Péter Dusán
ID Uploader
dc.identifier.submitter
10027552


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Dislocation patterning in a two-dimensional continuum theory of dislocations
 

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