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100 _a20170404a2012 k y0engy50 ba
101 1 _aeng
102 _aRU
135 _aarcn ---uucaa
181 0 _ai
182 0 _ab
200 1 _aLocal structural transformations in the fcc lattice in various contact interaction. Molecular dynamics study
_fS. G. Psakhie [et al.]
203 _aText
_celectronic
300 _aTitle screen
320 _a[References: p. 154 (23 tit.])
330 _aThe work is a molecular dynamics study of the peculiarities of local structural transformations in a copper crystallite at the atomic level in contact interaction of various types: shear loading of perfectly conjugate surfaces, local shear loading and nanoindentation. Interatomic interaction is described in the framework of the embedded atom method. It is shown that initial accommodation of the loaded crystallite proceeds through local structural transformations giving rise to higher-rank defects such as dislocations, stacking faults, interfaces, etc. In further plastic deformation, the structural defects propagate from the contact zone to the crystallite bulk. The egress of structural defects to a free surface causes deformation of the model crystallite. The deformation pattern can evolve, depending on the loading conditions, with a change in crystallographic orientation of the crystallite near the contact zone, generation of misoriented nano-sized regions, and eventually formation of a stable nanostructural state. The obtained results allow conceptually new understanding of the nature of defect generation in a crystalline structure during the nucleation and development of plastic deformation in loaded materials.
333 _aРежим доступа: по договору с организацией-держателем ресурса
461 _tPhysical Mesomechanics
_d1998-
463 _tVol. 15, iss. 3
_v[P. 147-154]
_d2012
610 1 _aтруды учёных ТПУ
610 1 _aэлектронный ресурс
610 1 _aпластическая деформация
610 1 _aмолекулярная динамика
701 1 _aPsakhie
_bS. G.
_cphysicist
_chead of laboratory, Advisor to the rector, head of Department, Tomsk Polytechnic University, doctor of physico-mathematical Sciences
_f1952-
_gSergey Grigorievich
_2stltpush
_3(RuTPU)RU\TPU\pers\33038
701 1 _aZolnikov
_bK. P.
701 1 _aDmitriev
_bA. I.
_cphysicist
_cengineer of Tomsk Polytechnic University, doctor of physical and mathematical sciences
_f1972-
_gAndrey Ivanovich
_2stltpush
_3(RuTPU)RU\TPU\pers\35822
701 1 _aKryzhevich
_bD. S.
701 1 _a· Nikonov
_bA. Yu.
712 0 2 _aНациональный исследовательский Томский политехнический университет (ТПУ)
_bИнститут физики высоких технологий (ИФВТ)
_bКафедра физики высоких технологий в машиностроении (ФВТМ)
_h2087
_2stltpush
_3(RuTPU)RU\TPU\col\18687
801 2 _aRU
_b63413507
_c20170404
_gRCR
856 4 _uhttp://dx.doi.org/10.1134/S1029959912020026
942 _cCF