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2011 | 9 | 4 | 1090-1095
Tytuł artykułu

On the core width and Peierls stress of bubble rafts dislocations within the framework of modified Peierls-Nabarro model

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Using Foreman’s method, the core structure and Peierls stress of dislocations in bubble rafts have been investigated within the framework of the modified Peierls-Nabarro (P-N) model in which the discrete lattice effect is taken into account. The core width obtained from the modified P-N model is much wider than that from the P-N model owing to the discrete lattice effect. It is found that the core width of dislocation increases with a decrease of the bubble radius. The elastic strain energy associated with the discrete effect is considered while calculating the Peierls stress. The new expression of the Peierls stress obtained in this paper is not explicitly dependent on the particular form of the restoring force law, which is only related to the core structure parameter and can be used expediently to predict the Peierls stress of dislocations. The Peierls stress decreases rapidly with the decrease of the bubble radius.
Słowa kluczowe
Wydawca

Czasopismo
Rocznik
Tom
9
Numer
4
Strony
1090-1095
Opis fizyczny
Daty
wydano
2011-08-01
online
2011-04-30
Twórcy
autor
  • Department of Physics and Institute for Structure and Function, Chongqing University, Chongqing, 400044, P. R. China
autor
  • Department of Physics and Institute for Structure and Function, Chongqing University, Chongqing, 400044, P. R. China
autor
  • Department of Physics and Institute for Structure and Function, Chongqing University, Chongqing, 400044, P. R. China
autor
  • Department of Physics and Institute for Structure and Function, Chongqing University, Chongqing, 400044, P. R. China
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_s11534-010-0146-1
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