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Article: Mobility of screw dislocations in BCC crystals: A review on modelling methods
Title | Mobility of screw dislocations in BCC crystals: A review on modelling methods |
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Authors | |
Keywords | Bcc Metals Dislocations Mechanical Properties Simulations |
Issue Date | 2000 |
Publisher | Taylor & Francis Ltd. The Journal's web site is located at http://www.tandf.co.uk/journals/titles/10020071.asp |
Citation | Progress In Natural Science, 2000, v. 10 n. 10, p. 728-729 How to Cite? |
Abstract | This article reviews the methods employed in modelling the various aspects of mobility of screw dislocations in the body-centred cubic (BCC) structure. The behaviour of straight dislocation cores at 0 K has been well-understood following the application of traditional 2-D atomistic simulation in the past few decades. Kink-pair activation at non-zero temperatures has been classically treated by Volteira-type line tension models, but these have been superseded in recent years by a semi-continuum approach based on the Peierls-Nabarro framework. The use of 3-D atomistic simulation techniques in studying kink-pair related problems is also emerging. There is now the prospect that engineering-oriented phenomena such as brittle-to-ductile transition and the strain-rate sensitivity of deformation textures in BCC metals can be investigated at a more fundamental level involving dislocation core behaviour. |
Persistent Identifier | http://hdl.handle.net/10722/156765 |
ISSN | 2023 Impact Factor: 4.8 2023 SCImago Journal Rankings: 1.025 |
References |
DC Field | Value | Language |
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dc.contributor.author | Ngan, AHW | en_US |
dc.date.accessioned | 2012-08-08T08:43:52Z | - |
dc.date.available | 2012-08-08T08:43:52Z | - |
dc.date.issued | 2000 | en_US |
dc.identifier.citation | Progress In Natural Science, 2000, v. 10 n. 10, p. 728-729 | en_US |
dc.identifier.issn | 1002-0071 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/156765 | - |
dc.description.abstract | This article reviews the methods employed in modelling the various aspects of mobility of screw dislocations in the body-centred cubic (BCC) structure. The behaviour of straight dislocation cores at 0 K has been well-understood following the application of traditional 2-D atomistic simulation in the past few decades. Kink-pair activation at non-zero temperatures has been classically treated by Volteira-type line tension models, but these have been superseded in recent years by a semi-continuum approach based on the Peierls-Nabarro framework. The use of 3-D atomistic simulation techniques in studying kink-pair related problems is also emerging. There is now the prospect that engineering-oriented phenomena such as brittle-to-ductile transition and the strain-rate sensitivity of deformation textures in BCC metals can be investigated at a more fundamental level involving dislocation core behaviour. | en_US |
dc.language | eng | en_US |
dc.publisher | Taylor & Francis Ltd. The Journal's web site is located at http://www.tandf.co.uk/journals/titles/10020071.asp | en_US |
dc.relation.ispartof | Progress in Natural Science | en_US |
dc.subject | Bcc Metals | en_US |
dc.subject | Dislocations | en_US |
dc.subject | Mechanical Properties | en_US |
dc.subject | Simulations | en_US |
dc.title | Mobility of screw dislocations in BCC crystals: A review on modelling methods | en_US |
dc.type | Article | en_US |
dc.identifier.email | Ngan, AHW:hwngan@hkucc.hku.hk | en_US |
dc.identifier.authority | Ngan, AHW=rp00225 | en_US |
dc.description.nature | link_to_subscribed_fulltext | en_US |
dc.identifier.scopus | eid_2-s2.0-21244441968 | en_US |
dc.identifier.hkuros | 58578 | - |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-21244441968&selection=ref&src=s&origin=recordpage | en_US |
dc.identifier.volume | 10 | en_US |
dc.identifier.issue | 10 | en_US |
dc.identifier.spage | 728 | en_US |
dc.identifier.epage | 729 | en_US |
dc.publisher.place | United Kingdom | en_US |
dc.identifier.scopusauthorid | Ngan, AHW=7006827202 | en_US |
dc.identifier.issnl | 1002-0071 | - |