Screening of mesodefect stress fields by ensemble of moving dislocations and misorientation regions formation during plastic deformation of metals

Sarafanov G.F., Perevezentsev V.N.
Received: 01 March 2011; Revised: 15 March 2011; Accepted: 24 March 2011
This paper is written in Russian
Citation: G.F. Sarafanov, V.N. Perevezentsev. Screening of mesodefect stress fields by ensemble of moving dislocations and misorientation regions formation during plastic deformation of metals. Letters on Materials, 2011, 1(1) 19-24
BibTex   DOI: 10.22226/2410-3535-2011-1-19-24

Abstract

The results of analytical studies of self-consistent dynamics of a dislocation ensemble in mesodefects (junction disclination, disclination dipole, planar mesodefect) elastic fields are presented. It is shown that mesodefects elastic fields disturb laminar flow of dislocations and course formation of increased dislocation charge density regions. Such redistribution of dislocations effectively screen mesodefect elastic fields, essentially decrease the energy of system and creates the preconditions for the formation of misoriented regions – broken sub-boundaries along the lines of dislocation charge extremum.

References (19)

1.
V.V. Rybin. Large plastic deformations and fracture ofmetals. M.: Metallurgia; 1986. (in Russian)
2.
R.Z. Valiev, M.J. Zehetbauer, Y. Estrin, H.W. Höppel,Y. Ivanisenko, H. Hahn, at all. Advanced EngineeringMaterials 9, 527 (2007).
3.
T.G. Langdon. Journal of Materials Science. 42, 3388(2007).
4.
A.A. Zisman, V.V. Rybin. Acta Mater. 4, 403 (1996).
5.
V.V. Rybin, A.A. Zisman, N.Yu. Zolotorevsky. Acta Met.Mater. 41, 2211 (1993).
6.
V.V. Rybin. Problems of material science,1, 5 (2003).
7.
V.I. Vladimirov, A.E. Romanov. Phys.Stat.Sol. (a). 20,3114 (1978).
8.
M.Yu. Gutkin, K.N. Mikaelyan, A.E. Romanov, KlimanekP. Phys.Stat.Sol. (a). 193, 35 (2002).
9.
A.E. Romanov, A.L. Kolesnikova. Progress in MaterialsScience. 54,740 (2009).
10.
G.F. Sarafanov. Physics of the Solid State.39, 1403 (1997).
11.
G.F. Sarafanov, V.N. Perevezentsev. Technical PhysicsLetters 31, 936 (2005).
12.
G.F.Sarafanov, V.N. Perevezentsev. Physics of the SolidState. 49, 1867 (2007).
13.
V.N. Perevezentsev, G.F. Sarafanov. Problems of materialsscience. 4, 246 (2007).
14.
G.F.Sarafanov, V.N. Perevezentsev. Physics of the SolidState. 51, 2309 (2009).
15.
J.G. Hirth, J. Lothe. Theory of dislocations. McGraw-Hill;New-York; 1968.
16.
G.F.Sarafanov, V.N. Perevezentsev. Technical PhysicsLetters. 35, 302 (2009).
17.
G.F. Sarafanov, V.N. Perevezentsev. Technical PhysicsLetters, 33, 400 (2007).
18.
V.N. Perevezentsev, G.F. Sarafanov. Mater. Sci. Eng (a).503, 137 (2009).
19.
G.F. Sarafanov, V.N. Perevezentsev, Y.V. Svirina. TechnicalPhysics. 54, 549 (2009).

Cited by (3)

1.
Невский С.А., Сарычев В.Д., Комиссарова И.А., Громов В.Е., Вестник Тамбовского университета. Серия: Естественные и технические науки 18(4-2), 1848-1849 (2013).
2.
Невский С.А., Сарычев В.Д., Громов В.Е., Вестник Российской академии естественных наук. Западно-Сибирское отделение, 120-128 (2013).
3.
Старостенков М.Д., отчет о НИР  № Ор 14-32-50295\14 от 02.09.2014 (Министерство образования и науки РФ) .