Structure and mechanical properties of aging Al-Li-Cu-Zr-Sc-Ag alloy after severe plastic deformation by high-pressure torsion

被引：12

作者：

Kaigorodova, L. I. ^{[1
]}

Rasposienko, D. Yu. ^{[1
]}

Pushin, V. G. ^{[1
]}

Pilyugin, V. P. ^{[1
]}

Smirnov, S. V. ^{[2
]}

机构：

[1] Russian Acad Sci, Inst Met Phys, Ural Branch, Ekaterinburg 620990, Russia

[2] Russian Acad Sci, Inst Machine Sci, Ural Branch, Ekaterinburg 620049, Russia

来源：

PHYSICS OF METALS AND METALLOGRAPHY | 2015年 / 116卷 / 04期

基金：

俄罗斯基础研究基金会;

关键词：

severe plastic deformation; high-pressure torsion; aging; recrystallization; supersaturated solid solution decomposition; nanocrystalline structure; boundaries; phase; grain dislocations; vacancies; microhardness; STABILITY; BEHAVIOR; PHASE;

D O I：

10.1134/S0031918X15040080

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The structural and phase transformations have been studied in aging commercial aluminum-lithium alloy Al-1.2 Li-3.2 Cu-0.09 Zr-0.11 Sc-0.4 Ag-0.3 Mg in the as-delivered state and after severe plastic deformation by torsion for 1, 5 and 10 revolutions under a high pressure of 4 GPa. Deformation-induced nanofragmentation and dynamic recrystallization have been found to occur in the alloy. The degree of recrystallization increases with deformation. Nanofragmentation and recrystallization processes are accompanied by the deformation-induced decomposition of solid solution and changes in both the nucleation mechanism of precipitation and the phase composition of the alloy. The influence of a nanostructured nanophase state of the alloy on its mechanical properties (microhardness, plasticity, elastic modulus, and stiffness) is discussed.

引用

页码：346 / 355

页数：10

共 50 条

[1] Structure and mechanical properties of aging Al-Li-Cu-Zr-Sc-Ag alloy after severe plastic deformation by high-pressure torsion
L. I. Kaigorodova
D. Yu. Rasposienko
V. G. Pushin
V. P. Pilyugin
S. V. Smirnov
The Physics of Metals and Metallography, 2015, 116 : 346 - 355
[2] Structure of aging Al-Li-Cu-Zr-Sc-Ag alloy after severe plastic deformation and long-term storage
Kaigorodova, L. I.
Rasposienko, D. Yu.
Pushin, V. G.
Pilyugin, V. P.
Smirnov, S. V.
PHYSICS OF METALS AND METALLOGRAPHY, 2015, 116 (11) : 1108 - 1115
[3] Effect of annealing on the structure and properties of Al-Li-Cu-Zr-Sc-Ag alloy subjected to severe plastic deformation
Kaigorodova, L. I.
Rasposienko, D. Yu.
Pushin, V. G.
Pilyugin, V. P.
Smirnov, S. V.
PHYSICS OF METALS AND METALLOGRAPHY, 2015, 116 (09) : 932 - 941
[4] Influence of Severe Plastic Deformation on the Structure and Properties of Al-Li-Cu-Mg-Zr-Sc-Zn Alloy
Kaigorodova, L. I.
Rasposienko, D. Yu.
Pushin, V. G.
Pilyugin, V. P.
Smirnov, S. V.
PHYSICS OF METALS AND METALLOGRAPHY, 2018, 119 (02) : 161 - 168
[5] Influence of Severe Plastic Deformation on the Structure and Properties of Al–Li–Cu–Mg–Zr–Sc–Zn Alloy
L. I. Kaigorodova
D. Yu. Rasposienko
V. G. Pushin
V. P. Pilyugin
S. V. Smirnov
Physics of Metals and Metallography, 2018, 119 : 161 - 168
[6] Effect of annealing on the structure and properties of Al–Li–Cu–Zr–Sc–Ag alloy subjected to severe plastic deformation
L. I. Kaigorodova
D. Yu. Rasposienko
V. G. Pushin
V. P. Pilyugin
S. V. Smirnov
The Physics of Metals and Metallography, 2015, 116 : 932 - 941
[7] Structure of aging Al–Li–Cu–Zr–Sc–Ag alloy after severe plastic deformation and long-term storage
L. I. Kaigorodova
D. Yu. Rasposienko
V. G. Pushin
V. P. Pilyugin
S. V. Smirnov
The Physics of Metals and Metallography, 2015, 116 : 1108 - 1115
[8] Effect of Annealing on the Structure and Properties of the Aging Al-Li-Cu-Mg-Zr-Sc-Zn Alloy Subjected to Megaplastic Strain
Kaigorodova, L. I.
Rasposienko, D. Yu.
Pushin, V. G.
Pilyugin, V. P.
Smirnov, S. V.
PHYSICS OF METALS AND METALLOGRAPHY, 2019, 120 (02) : 157 - 163
[9] Effect of Annealing on the Structure and Properties of the Aging Al–Li–Cu–Mg–Zr–Sc–Zn Alloy Subjected to Megaplastic Strain
L. I. Kaigorodova
D. Yu. Rasposienko
V. G. Pushin
V. P. Pilyugin
S. V. Smirnov
Physics of Metals and Metallography, 2019, 120 : 157 - 163
[10] Structural and Phase Transformations in Al-Li-Cu-Mg-Zr-Sc-Zn Alloy upon Storage after Megaplastic Deformation
Kaigorodova, L. I.
Rasposienko, D. Yu.
Pushin, V. G.
Pilyugin, V. P.
PHYSICS OF METALS AND METALLOGRAPHY, 2019, 120 (12) : 1200 - 1206

← 1 2 3 4 5 →