Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/102450
Title: Microstructure of 1469 aluminum alloy after severe plastic deformation and ion irradiation
Authors: Gushchina, N. V.
Ovchinnikov, V. V.
Makhin'Ko, F. F.
Kaigorodova, L. I.
Rasposienko, D. Yu.
Issue Date: 2020
Publisher: IOP Publishing Ltd
Citation: Microstructure of 1469 aluminum alloy after severe plastic deformation and ion irradiation / N. V. Gushchina, V. V. Ovchinnikov, F. F. Makhin'Ko, et al. — DOI 10.1088/1742-6596/1713/1/012019 // Journal of Physics: Conference Series. — 2020. — Vol. 1713. — Iss. 1. — 012019.
Abstract: The effect of accelerated Ar+ ion beams with an energy of 10 keV on the microstructure and phase composition in 1469 alloy (Al-Cu-Li-Ag-Mg-Zr-Sc) initially subjected to severe plastic deformation (SPD) has been investigated by transmission electron microscopy. Irradiation has been found to result in the formation of a predominantly recrystallized nanocrystalline or fully recrystallized submicrocrystalline structure in the alloy, depending on the ion fluence. The irradiation liquidates the banded structure found in the alloy after SPD. Therefore, the structural elements (nanofragments, nanograins, submicrocrystals) are distributed uniformly in the volume of the irradiated sample. In addition, irradiation increases the volume fraction and the size bimodality of heterogeneously-generated Т2-phase particles. The mechanism of nucleation and growth of excess phases has been proposed. The structure changes at a higher rate than it does during a long low-temperature annealing process, and structural changes are observed at a distance of ~200 μm from the surface, which considerably exceeds the projected ion range (~ 10 nm). © 2020 Institute of Physics Publishing. All rights reserved.
Keywords: ALUMINUM COPPER ALLOYS
ALUMINUM METALLOGRAPHY
COPPER METALLOGRAPHY
HIGH RESOLUTION TRANSMISSION ELECTRON MICROSCOPY
ION BEAMS
ION BOMBARDMENT
IONS
LITHIUM ALLOYS
LITHIUM METALLOGRAPHY
MAGNESIUM ALLOYS
MAGNESIUM METALLOGRAPHY
MICROSTRUCTURE
NANOCRYSTALS
PLASTIC COATINGS
PLASTIC DEFORMATION
RAPID SOLIDIFICATION
RECRYSTALLIZATION (METALLURGY)
SCANDIUM ALLOYS
SILVER ALLOYS
SILVER METALLOGRAPHY
TEMPERATURE
ZIRCALOY
ZIRCONIUM METALLOGRAPHY
BANDED STRUCTURES
IRRADIATED SAMPLES
LOW TEMPERATURE ANNEALING
NUCLEATION AND GROWTH
SEVERE PLASTIC DEFORMATIONS
STRUCTURAL ELEMENTS
STRUCTURE CHANGE
SUBMICROCRYSTALLINE STRUCTURES
NANOCRYSTALLINE ALLOYS
URI: http://hdl.handle.net/10995/102450
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85098748203
PURE ID: 20452895
263d5979-5ee8-4b81-8d9e-87adc06e93e2
ISSN: 17426588
DOI: 10.1088/1742-6596/1713/1/012019
metadata.dc.description.sponsorship: This work was supported in part by RFBR grant № 18-08-00942-а.
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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