Peculiarities of Strengthening of Al–Cu–Zr Alloy Structured by Severe Plastic Deformation

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Peculiarities of Strengthening of Al–Cu–Zr Alloy Structured by Severe Plastic Deformation. / Orlova, T. S.; Sadykov, D. I.; Murashkin, M. Yu; Kazykhanov, V. U.; Enikeev, N. A.

в: Physics of the Solid State, Том 63, № 12, 12.2021, стр. 1744-1756.

Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование

Author

Orlova, T. S. ; Sadykov, D. I. ; Murashkin, M. Yu ; Kazykhanov, V. U. ; Enikeev, N. A. / Peculiarities of Strengthening of Al–Cu–Zr Alloy Structured by Severe Plastic Deformation. в: Physics of the Solid State. 2021 ; Том 63, № 12. стр. 1744-1756.

BibTeX

@article{638671c3d4064204b266399811c74d93,

title = "Peculiarities of Strengthening of Al–Cu–Zr Alloy Structured by Severe Plastic Deformation",

abstract = "Abstract: The effect of small copper additives on the microstructure and physical and mechanical properties of an ultrafine-grained Al–1.47Cu–0.34Zr (wt %) alloy structured by high pressure torsion after preliminary annealing at a temperature of 375°C for 140 h is investigated. As a result of processing, high values of strength characteristics are achieved (nominal yield stress of 430 MPa, ultimate strength of 574 MPa) at an acceptable level of electrical conductivity (46.1% IACS) and plasticity (elongation to failure ~5%). Taking into account the micro-structural parameters determined using X-ray diffraction analysis and transmission electron microscopy, an analysis of the acting strengthening mechanisms providing such a high strength is carried out. It is shown that Cu plays a key role in strengthening. The addition of copper contributes to significant grain refinement and, as a result, increases grain boundary strengthening. In addition, doping with copper leads to significant additional strengthening (~130 MPa) in ultrafine-grained alloy, which is not typical for a coarse-grained state. The most probable reasons for this strengthening can be the segregation of Cu at grain boundaries and the formation of Cu nanoclusters.",

keywords = "aluminum alloys, electrical conductivity, microstructure, severe plastic deformation, strengthening mechanisms",

author = "Orlova, {T. S.} and Sadykov, {D. I.} and Murashkin, {M. Yu} and Kazykhanov, {V. U.} and Enikeev, {N. A.}",

note = "Publisher Copyright: {\textcopyright} 2021, Pleiades Publishing, Ltd.",

year = "2021",

month = dec,

doi = "10.1134/S1063783421100280",

language = "English",

volume = "63",

pages = "1744--1756",

journal = "Physics of the Solid State",

issn = "1063-7834",

publisher = "МАИК {"}Наука/Интерпериодика{"}",

number = "12",

}

RIS

TY - JOUR

T1 - Peculiarities of Strengthening of Al–Cu–Zr Alloy Structured by Severe Plastic Deformation

AU - Orlova, T. S.

AU - Sadykov, D. I.

AU - Murashkin, M. Yu

AU - Kazykhanov, V. U.

AU - Enikeev, N. A.

PY - 2021/12

Y1 - 2021/12

N2 - Abstract: The effect of small copper additives on the microstructure and physical and mechanical properties of an ultrafine-grained Al–1.47Cu–0.34Zr (wt %) alloy structured by high pressure torsion after preliminary annealing at a temperature of 375°C for 140 h is investigated. As a result of processing, high values of strength characteristics are achieved (nominal yield stress of 430 MPa, ultimate strength of 574 MPa) at an acceptable level of electrical conductivity (46.1% IACS) and plasticity (elongation to failure ~5%). Taking into account the micro-structural parameters determined using X-ray diffraction analysis and transmission electron microscopy, an analysis of the acting strengthening mechanisms providing such a high strength is carried out. It is shown that Cu plays a key role in strengthening. The addition of copper contributes to significant grain refinement and, as a result, increases grain boundary strengthening. In addition, doping with copper leads to significant additional strengthening (~130 MPa) in ultrafine-grained alloy, which is not typical for a coarse-grained state. The most probable reasons for this strengthening can be the segregation of Cu at grain boundaries and the formation of Cu nanoclusters.

AB - Abstract: The effect of small copper additives on the microstructure and physical and mechanical properties of an ultrafine-grained Al–1.47Cu–0.34Zr (wt %) alloy structured by high pressure torsion after preliminary annealing at a temperature of 375°C for 140 h is investigated. As a result of processing, high values of strength characteristics are achieved (nominal yield stress of 430 MPa, ultimate strength of 574 MPa) at an acceptable level of electrical conductivity (46.1% IACS) and plasticity (elongation to failure ~5%). Taking into account the micro-structural parameters determined using X-ray diffraction analysis and transmission electron microscopy, an analysis of the acting strengthening mechanisms providing such a high strength is carried out. It is shown that Cu plays a key role in strengthening. The addition of copper contributes to significant grain refinement and, as a result, increases grain boundary strengthening. In addition, doping with copper leads to significant additional strengthening (~130 MPa) in ultrafine-grained alloy, which is not typical for a coarse-grained state. The most probable reasons for this strengthening can be the segregation of Cu at grain boundaries and the formation of Cu nanoclusters.

KW - aluminum alloys

KW - electrical conductivity

KW - microstructure

KW - severe plastic deformation

KW - strengthening mechanisms

UR - http://www.scopus.com/inward/record.url?scp=85121504540&partnerID=8YFLogxK

U2 - 10.1134/S1063783421100280

DO - 10.1134/S1063783421100280

M3 - Article

AN - SCOPUS:85121504540

VL - 63

SP - 1744

EP - 1756

JO - Physics of the Solid State

JF - Physics of the Solid State

SN - 1063-7834

IS - 12

ER -

ID: 97615835