Self-organization of plastic deformation and deformation relief in FCC single crystals; Mechanics of Materials; Vol. 117

Self-organization of plastic deformation and deformation relief in FCC single crystals

Bibliographic Details
Parent link:Mechanics of Materials
Vol. 117.— 2018.— [P. 202–213]
Main Author: Alferova (Alfyorova) E. A. Ekaterina Aleksandrovna
Corporate Authors: Национальный исследовательский Томский политехнический университет Инженерная школа новых производственных технологий Отделение материаловедения, Национальный исследовательский Томский политехнический университет (ТПУ) Юргинский технологический институт (филиал) (ЮТИ) Кафедра технологии машиностроения (ТМС)
Other Authors: Lychagin D. V. Dmitry Vasilievich
Summary:Title screen
The purpose of this article is to present patterns for various types of deformation relief formed by octahedral slip, ways of its self-organization and its ability for stress relaxation. The article shows quantitatively that with the scale-up of the structural element of the deformation relief in the sequence of “shear traces, mesobands, macrobands, folds”, the deformation becomes more inhomogeneous at their joints. At the same time, self-organization of deformation within the area occupied by one type of relief occurs in such a way that inhomogeneity of deformation within the occupied area decreases, and deformation in any local area tends to the average deformation on the face. The research shows that deformation relief formed on the crystal surface by octahedral slip releases stress at the meso and macro levels. It is shown that self-organization of shear traces into pack slip band, meso and macro bands reduces local stresses at the place of their formation as compared to the zone occupied by the shear traces. Estimated calculations showed that the difference in the rate of local strain between different types of structural elements of relief increased by about 40%. It is shown that the development of the quasiperiodic profile of the crystal surface upon plastic deformation occurs in terms of the Asaro-Tiller-Grinfeld instability. The critical wavelengths of surface perturbations ?c are calculated for structural elements of the various relief types.
Режим доступа: по договору с организацией-держателем ресурса
Language:English
Published: 2018
Subjects:
электронный ресурс
труды учёных ТПУ
деформация
нестабильность
релаксация
пластичность
Online Access:https://doi.org/10.1016/j.mechmat.2017.11.011
Format: Electronic Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=657663

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