Special rotational deformation effect on the emission of dislocations from a crack tip in deformed nanocrystalline solids

Fang, QH; Feng, H; Liu, YW; Lin, S; Zhang, N

Special rotational deformation effect on the emission of dislocations from a crack tip in deformed nanocrystalline solids

Fang, QH Feng, H Liu, YW Lin, S Zhang, N

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Publication Type:: Journal Article
Citation:: International Journal of Solids and Structures, 2012, 49 (11-12), pp. 1406 - 1412
Issue Date:: 2012-06-01

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Field	Value	Language
dc.contributor.author	Fang, QH	en_US
dc.contributor.author	Feng, H	en_US
dc.contributor.author	Liu, YW	en_US
dc.contributor.author	Lin, S	en_US
dc.contributor.author	Zhang, N https://orcid.org/0000-0001-6408-0044	en_US
dc.date.issued	2012-06-01	en_US
dc.identifier.citation	International Journal of Solids and Structures, 2012, 49 (11-12), pp. 1406 - 1412	en_US
dc.identifier.issn	0020-7683	en_US
dc.identifier.uri	http://hdl.handle.net/10453/114906
dc.description.abstract	The interaction between the special rotational deformation and the crack in deformed nanocrystalline ceramics and metals is investigated by the complex variable method. We have theoretically described the effects of the disclination quadrupole produced by the special rotational deformation on the emission of lattice dislocations from the crack tip. The complex form expressions of the stress field and the force field are divided. The critical stress intensity factors for the first dislocation emission are calculated. The influence of the disclination strength, the grain size (the quadrupole arms), the location of the disclinations and the angle between the crack plane and one of the quadrupole arms, as well as the crack length on the critical stress intensity factors is discussed in detail. And the results show that, the special rotational deformation has great influence on the dislocation emission from the crack tip. © 2012 Elsevier Ltd. All rights reserved.	en_US
dc.relation.ispartof	International Journal of Solids and Structures	en_US
dc.relation.isbasedon	10.1016/j.ijsolstr.2012.02.026	en_US
dc.subject.classification	Mechanical Engineering & Transports	en_US
dc.title	Special rotational deformation effect on the emission of dislocations from a crack tip in deformed nanocrystalline solids	en_US
dc.type	Journal Article
utslib.citation.volume	11-12	en_US
utslib.citation.volume	49	en_US
utslib.for	0912 Materials Engineering	en_US
utslib.for	0913 Mechanical Engineering	en_US
utslib.for	09 Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Mechanical and Mechatronic Engineering
utslib.copyright.status	closed_access
pubs.issue	11-12	en_US
pubs.publication-status	Published	en_US
pubs.volume	49	en_US

Abstract:

The interaction between the special rotational deformation and the crack in deformed nanocrystalline ceramics and metals is investigated by the complex variable method. We have theoretically described the effects of the disclination quadrupole produced by the special rotational deformation on the emission of lattice dislocations from the crack tip. The complex form expressions of the stress field and the force field are divided. The critical stress intensity factors for the first dislocation emission are calculated. The influence of the disclination strength, the grain size (the quadrupole arms), the location of the disclinations and the angle between the crack plane and one of the quadrupole arms, as well as the crack length on the critical stress intensity factors is discussed in detail. And the results show that, the special rotational deformation has great influence on the dislocation emission from the crack tip. © 2012 Elsevier Ltd. All rights reserved.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/114906