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Article: Non-planar dislocations: 3D models and thermally-activated glide processes
Title | Non-planar dislocations: 3D models and thermally-activated glide processes |
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Authors | |
Keywords | Atomistic simulation Dislocation Plasticity Strength |
Issue Date | 2005 |
Publisher | Elsevier SA. The Journal's web site is located at http://www.elsevier.com/locate/msea |
Citation | Materials Science And Engineering A, 2005, v. 400-401 n. 1-2 SUPPL., p. 25-36 How to Cite? |
Abstract | In recent years, there has been a renewed interest in studying the cross-slip of screw dislocations in the simple face-centred cubic (FCC) structure. This paper serves to address parallel developments in modelling the cross-slip of screw dislocations in the body-centred cubic (BCC) structure and the ordered L12 structure. In the latter two cases, the dislocation cores have non-planar spreading offering high intrinsic Peierls stresses. The flow behaviours of these materials, such as the non-Schmid behaviour and temperature-dependence of flow stress, are largely due to the behaviours of single dislocations. 3D atomistic modelling of the minimum-energy path for the glide processes in these cases is performed with an aim to reconcile with experimentally determined activation energies for slip. © 2005 Elsevier B.V. All rights reserved. |
Persistent Identifier | http://hdl.handle.net/10722/76025 |
ISSN | 2023 Impact Factor: 6.1 2023 SCImago Journal Rankings: 1.660 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
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dc.contributor.author | Ngan, AHW | en_HK |
dc.date.accessioned | 2010-09-06T07:16:53Z | - |
dc.date.available | 2010-09-06T07:16:53Z | - |
dc.date.issued | 2005 | en_HK |
dc.identifier.citation | Materials Science And Engineering A, 2005, v. 400-401 n. 1-2 SUPPL., p. 25-36 | en_HK |
dc.identifier.issn | 0921-5093 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/76025 | - |
dc.description.abstract | In recent years, there has been a renewed interest in studying the cross-slip of screw dislocations in the simple face-centred cubic (FCC) structure. This paper serves to address parallel developments in modelling the cross-slip of screw dislocations in the body-centred cubic (BCC) structure and the ordered L12 structure. In the latter two cases, the dislocation cores have non-planar spreading offering high intrinsic Peierls stresses. The flow behaviours of these materials, such as the non-Schmid behaviour and temperature-dependence of flow stress, are largely due to the behaviours of single dislocations. 3D atomistic modelling of the minimum-energy path for the glide processes in these cases is performed with an aim to reconcile with experimentally determined activation energies for slip. © 2005 Elsevier B.V. All rights reserved. | en_HK |
dc.language | eng | en_HK |
dc.publisher | Elsevier SA. The Journal's web site is located at http://www.elsevier.com/locate/msea | en_HK |
dc.relation.ispartof | Materials Science and Engineering A | en_HK |
dc.subject | Atomistic simulation | en_HK |
dc.subject | Dislocation | en_HK |
dc.subject | Plasticity | en_HK |
dc.subject | Strength | en_HK |
dc.title | Non-planar dislocations: 3D models and thermally-activated glide processes | en_HK |
dc.type | Article | en_HK |
dc.identifier.openurl | http://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0921-5093&volume=400-401&spage=25&epage=36&date=2005&atitle=Non-planar+dislocations:+3D+models+and+thermally-activated+glide+processes | en_HK |
dc.identifier.email | Ngan, AHW:hwngan@hkucc.hku.hk | en_HK |
dc.identifier.authority | Ngan, AHW=rp00225 | en_HK |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/j.msea.2005.03.049 | en_HK |
dc.identifier.scopus | eid_2-s2.0-21644469918 | en_HK |
dc.identifier.hkuros | 116337 | en_HK |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-21644469918&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 400-401 | en_HK |
dc.identifier.issue | 1-2 SUPPL. | en_HK |
dc.identifier.spage | 25 | en_HK |
dc.identifier.epage | 36 | en_HK |
dc.identifier.isi | WOS:000230681900006 | - |
dc.publisher.place | Switzerland | en_HK |
dc.identifier.scopusauthorid | Ngan, AHW=7006827202 | en_HK |
dc.identifier.issnl | 0921-5093 | - |