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Article: A universal relation for the stress dependence of activation energy for slip in body-centered cubic crystals
Title | A universal relation for the stress dependence of activation energy for slip in body-centered cubic crystals |
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Authors | |
Keywords | Physics engineering |
Issue Date | 1999 |
Publisher | American Institute of Physics. The Journal's web site is located at http://jap.aip.org/jap/staff.jsp |
Citation | Journal of Applied Physics, 1999, v. 86 n. 3, p. 1236-1244 How to Cite? |
Abstract | By analyzing experimental data in the literature, the activation energy H for slip in body-centered cubic metals is found to approximately obey the simple relation H≈0.1 μb3(1 - t)2, where t is the applied stress normalized by the zero-temperature Peierls stress, μ is the 〈111〉 shear modulus, and b the 1/2〈111〉 Burgers vector. Such universal relation is explained by analyzing the activation processes of kink-pair generation and expansion along threefold screw dislocations using the generalized Peierls-Nabarro model [A. H. W. Ngan, J. Mech. Phys. Solids 45, 903 (1997)]. The model also predicts qualitatively the general form of the orientation dependence of Peierls stress at zero temperature. © 1999 American Institute of Physics. |
Persistent Identifier | http://hdl.handle.net/10722/43028 |
ISSN | 2023 Impact Factor: 2.7 2023 SCImago Journal Rankings: 0.649 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
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dc.contributor.author | Ngan, AHW | en_HK |
dc.contributor.author | Zhang, HF | en_HK |
dc.date.accessioned | 2007-03-23T04:37:12Z | - |
dc.date.available | 2007-03-23T04:37:12Z | - |
dc.date.issued | 1999 | en_HK |
dc.identifier.citation | Journal of Applied Physics, 1999, v. 86 n. 3, p. 1236-1244 | - |
dc.identifier.issn | 0021-8979 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/43028 | - |
dc.description.abstract | By analyzing experimental data in the literature, the activation energy H for slip in body-centered cubic metals is found to approximately obey the simple relation H≈0.1 μb3(1 - t)2, where t is the applied stress normalized by the zero-temperature Peierls stress, μ is the 〈111〉 shear modulus, and b the 1/2〈111〉 Burgers vector. Such universal relation is explained by analyzing the activation processes of kink-pair generation and expansion along threefold screw dislocations using the generalized Peierls-Nabarro model [A. H. W. Ngan, J. Mech. Phys. Solids 45, 903 (1997)]. The model also predicts qualitatively the general form of the orientation dependence of Peierls stress at zero temperature. © 1999 American Institute of Physics. | en_HK |
dc.format.extent | 137737 bytes | - |
dc.format.extent | 40924 bytes | - |
dc.format.extent | 310 bytes | - |
dc.format.mimetype | application/pdf | - |
dc.format.mimetype | application/pdf | - |
dc.format.mimetype | text/plain | - |
dc.language | eng | en_HK |
dc.publisher | American Institute of Physics. The Journal's web site is located at http://jap.aip.org/jap/staff.jsp | en_HK |
dc.relation.ispartof | Journal of Applied Physics | en_HK |
dc.rights | Copyright 1999 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Journal of Applied Physics, 1999, v. 86 n. 3, p. 1236-1244 and may be found at https://doi.org/10.1063/1.370877 | - |
dc.subject | Physics engineering | en_HK |
dc.title | A universal relation for the stress dependence of activation energy for slip in body-centered cubic crystals | en_HK |
dc.type | Article | en_HK |
dc.identifier.openurl | http://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0021-8979&volume=86&issue=3&spage=1236&epage=1244&date=1999&atitle=A+universal+relation+for+the+stress+dependence+of+activation+energy+for+slip+in+body-centered+cubic+crystals | en_HK |
dc.identifier.email | Ngan, AHW:hwngan@hkucc.hku.hk | en_HK |
dc.identifier.authority | Ngan, AHW=rp00225 | en_HK |
dc.description.nature | published_or_final_version | en_HK |
dc.identifier.doi | 10.1063/1.370877 | en_HK |
dc.identifier.scopus | eid_2-s2.0-0006205829 | en_HK |
dc.identifier.hkuros | 48987 | - |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-0006205829&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 86 | en_HK |
dc.identifier.issue | 3 | en_HK |
dc.identifier.spage | 1236 | en_HK |
dc.identifier.epage | 1244 | en_HK |
dc.identifier.isi | WOS:000081458800012 | - |
dc.publisher.place | United States | en_HK |
dc.identifier.scopusauthorid | Ngan, AHW=7006827202 | en_HK |
dc.identifier.scopusauthorid | Zhang, HF=7409198080 | en_HK |
dc.identifier.issnl | 0021-8979 | - |