Band Structure Formation in Metals Under Deformation

Gubernatorov, V. V.; Соколов, Б. К.; Sbitnev, A. K.; Vladimirov, L. R.; Gervasyeva, I.V.

doi:10.1155/tsm.32.41

Cited by 10 publications

(8 citation statements)

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“…Whereas in samples with low V ns an almost uniform laminar material flow is observed, in samples with high V ns (samples 9, 11 and 29) in regions where coarse particles accumulate the material flow becomes wave-like leading to the so-called ''crimping'' of the microstructure. It is known that crimping is caused by a non-uniform deformation in different layers of the material [26]. It is more prominent at 940°C where the wave amplitude is maximal (Fig.…”

Section: Microstructurementioning

confidence: 99%

Microstructure, texture and superconducting properties of Bi2212 ceramics, deformed by torsion under pressure

Imayev

Daminov

Reissner

et al. 2007

Physica C: Superconductivity and its Applications

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Section: Microstructurementioning

confidence: 99%

Microstructure, texture and superconducting properties of Bi2212 ceramics, deformed by torsion under pressure

Imayev

Daminov

Reissner

et al. 2007

Physica C: Superconductivity and its Applications

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“…In spite of the fact that folds on metallic surfaces are very interesting details of the surface deformation pattern, they did not attract much attention and were studied basically in relation to complex loading methods such as rolling (Gubernatorov et al, 1999a(Gubernatorov et al, , 1999b(Gubernatorov et al, , 2001Sokolov et al, 1995).…”

Section: Folds and Lipsmentioning

confidence: 99%

“…Many papers have been devoted to this subject especially in the field of geology (Williams et al, 1979;Huddleston, 1973;Bastida et al, 1999) while only few such papers can be found for metals (Gubernatorov, 1999a;Gubernatorov et al, 1999b;Sokolov et al, 1995). It is regrettable because folding is a frequent finding in fcc single crystals having [111] orientation with respect to the compression axis (Lychagin, 2006;Lychagin et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Macrosegmentation and strain hardening stages in copper single crystals under compression

Лычагин

Tarasov

Чумаевский

et al. 2015

International Journal of Plasticity

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“…with colleagues had called the reason for corrugating surface distortion of the material layers. They also show that the corrugation may be formed in a structurally homogeneous material (single crystal), that is, availability of basic stress concentrators is not a prerequisite [3]. This fact is explained by the loss of stability of the material layers, which occurs due to the presence of alternating stresses in the meso-level deformation under shear constrained.…”

Section: Introductionmentioning

confidence: 99%

The formation of a quasi-periodic surface profile by means of dislocation slip

Alfyorova

Лычагин

Soprunov

2017

J. Phys.: Conf. Ser.

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Abstract. This work presents the experimental results concerning the research of the morphology of the face-centered cubic (FCC) single crystals surface after compression deformation. Our aim is to identify the method of forming a quasiperiodic profile of single crystals with different crystal geometrical orientation. A set of modern methods as optical and confocal microscopy is applied. It is done to determine the morphology of surface parameters. The results show that the octahedral slip is an integral part of the formation of quasiperiodic profile surface and is starting with the initial strain. We present values of shear quantity directly in shear traces, meso-and macrobands and in shear tracks shift within them. The similarity of the process of surface profile forming at different levels of scale is given. Finally, we suppose that octahedral slip is the main way to form quasiperiodic deformation relief. We compare our results to published data and identify common regularities for various metal FCC single crystals with different deformation methods. The experimental results presented can be used for mathematical modeling of plastic deformation. IntroductionChanges in topology of solid surface after deformation are of interest to researchers from various branches of science for many years. The experimental data and results of mathematical models indicate that folding, wrinkling, extrusion and intrusion, checkerboard distribution regions, etc. are frequent and appear in a variety of load conditions. This process is typical for the poly-and single crystals, the folds can be observed in geology and metal forming. Folding being manifested in different ways of deformation, it has various manifestations and can be initiated as a slip and twinning.The results of finite element modeling of the emergence of roughness during plastic deformation of polycrystalline aluminum are given in article [1]. Results showed that texture samples and the direction of strain influence the formation of roughness. There are "ribbed ridging profiles" and the surface of the "orange peel shape". The paper also indicates that the Taylor factor affects the type of roughness. Article [2] represents the experimental data which show that the size and orientation of the grain influence roughness during plastic deformation. The results were obtained by the example of polycrystalline aluminum alloys. In all cases, there is a quasi-periodic surface profile after the deformation.The series of works by Gubernatorov V.V. with colleagues had called the reason for corrugating surface distortion of the material layers. They also show that the corrugation may be formed in a structurally homogeneous material (single crystal), that is, availability of basic stress concentrators is

show abstract

Band Structure Formation in Metals Under Deformation

Abstract: The study of the specific features of the flow of different metal layers at the deformation zone during rolling suggests that a regular banded structure of the material is determined by corrugation of some of its layers subject to strain.

Cited by 10 publications

References 0 publications

Microstructure, texture and superconducting properties of Bi2212 ceramics, deformed by torsion under pressure

Microstructure, texture and superconducting properties of Bi2212 ceramics, deformed by torsion under pressure

Macrosegmentation and strain hardening stages in copper single crystals under compression

The formation of a quasi-periodic surface profile by means of dislocation slip

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