Accumulation of Defects under Plastic Deformation of Polycrystalline Copper-Based Alloys; Physics of the Solid State; Vol. 64, iss. 11

Accumulation of Defects under Plastic Deformation of Polycrystalline Copper-Based Alloys

Bibliografske podrobnosti
Parent link:Physics of the Solid State
Vol. 64, iss. 11.— 2022.— [P. 561-566]
Korporativna značnica: Национальный исследовательский Томский политехнический университет Школа базовой инженерной подготовки Отделение естественных наук
Drugi avtorji: Trishkina L. I. Lyudmila Iljinichna, Cherkasova T. V. Tatyana Viktorovna, Solovjev A. N., Cherkasov V. N.
Izvleček:Title screen
The paper presents the experimental investigation of the role of the size factor in the formation of the defect structure of metallic materials. The objects of study were polycrystalline FCC Cu–Al and Cu–Mn solid solutions with average grain sizes of 10–240 µm. The dislocation structure of foil samples subjected to various deformations at room temperature was studied by TEM. We measured the scalar dislocation density (?), the density of geometrically necessary dislocations (GND) (?g), the density of statistically stored dislocations (SSD) (?s), the curvature-torsion of the crystal lattice (?), and some other parameters. The effect of the grain size of the dislocation substructure on its parameters has been quantitatively studied. The sources of curvature-torsion ? of the crystal lattice were determined from electron microscopic images. We measured ? in the alloys under study from different sources and its change with distance (x) from the source for alloys with fixed grain size and degree of deformation. The change in the average value of curvature-torsion from all sources with the degree of deformation is considered.
Режим доступа: по договору с организацией-держателем ресурса
Jezik:angleščina
Izdano: 2022
Teme:
электронный ресурс
труды учёных ТПУ
metals
alloys
deformation
grain size
crystal structure defects
dislocation density
curvature-torsion of the crystal lattice
металлы
сплавы
деформации
кристаллическая структура
Online dostop:https://doi.org/10.1134/S1063783422110129
Format: Elektronski Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=669370
Opis
Izvleček:Title screen
The paper presents the experimental investigation of the role of the size factor in the formation of the defect structure of metallic materials. The objects of study were polycrystalline FCC Cu–Al and Cu–Mn solid solutions with average grain sizes of 10–240 µm. The dislocation structure of foil samples subjected to various deformations at room temperature was studied by TEM. We measured the scalar dislocation density (?), the density of geometrically necessary dislocations (GND) (?g), the density of statistically stored dislocations (SSD) (?s), the curvature-torsion of the crystal lattice (?), and some other parameters. The effect of the grain size of the dislocation substructure on its parameters has been quantitatively studied. The sources of curvature-torsion ? of the crystal lattice were determined from electron microscopic images. We measured ? in the alloys under study from different sources and its change with distance (x) from the source for alloys with fixed grain size and degree of deformation. The change in the average value of curvature-torsion from all sources with the degree of deformation is considered.
Режим доступа: по договору с организацией-держателем ресурса
DOI:10.1134/S1063783422110129

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