The Impact of the Dislocation Density, Lattice and Impurity Friction on the Dynamics of Expansion of a Dislocation Loop in FCC Metals
| Parent link: | Key Engineering Materials: Scientific Journal Vol. 712 : Advanced Materials for Technical and Medical Purpose (AMTMP 2016).— 2016.— [P. 390-393] |
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| مؤلف مشترك: | |
| مؤلفون آخرون: | , , , , , |
| الملخص: | Title screen The study of the role of various factors in plastic behavior of materials is carried out using a mathematical model that takes into account fundamental properties of deformation defects in a crystal lattice based on the continuum theory of dislocations. Calculations were performed for copper, nickel, aluminum, and lead using a specialized software system Dislocation Dynamics of Crystallographic Slip. It has been shown that a decrease in the density of dislocations from 1012 m{-2} to 1011 m{-2} leads to an increase in the dislocation path in 10-16 times, and the maximum velocity in 1.5-2 times in copper and nickel, by nearly 20% in aluminum, and practically remains unchanged in lead. A decrease in the lattice and impurity friction from 2 MPa to 0.1 MPa leads to a linear increase in the path and the maximum velocity of the dislocation by 10-25%. Режим доступа: по договору с организацией-держателем ресурса |
| منشور في: |
2016
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| سلاسل: | Modeling and Computational Procedures |
| الموضوعات: | |
| الوصول للمادة أونلاين: | http://dx.doi.org/10.4028/www.scientific.net/KEM.712.390 |
| التنسيق: | الكتروني فصل الكتاب |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=651375 |
| الملخص: | Title screen The study of the role of various factors in plastic behavior of materials is carried out using a mathematical model that takes into account fundamental properties of deformation defects in a crystal lattice based on the continuum theory of dislocations. Calculations were performed for copper, nickel, aluminum, and lead using a specialized software system Dislocation Dynamics of Crystallographic Slip. It has been shown that a decrease in the density of dislocations from 1012 m{-2} to 1011 m{-2} leads to an increase in the dislocation path in 10-16 times, and the maximum velocity in 1.5-2 times in copper and nickel, by nearly 20% in aluminum, and practically remains unchanged in lead. A decrease in the lattice and impurity friction from 2 MPa to 0.1 MPa leads to a linear increase in the path and the maximum velocity of the dislocation by 10-25%. Режим доступа: по договору с организацией-держателем ресурса |
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| DOI: | 10.4028/www.scientific.net/KEM.712.390 |