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

[31] Microstructural evolution and mechanical properties in a Zn-Al eutectoid alloy processed by high-pressure torsion [J].

Cho, Tae-Seong ;

Lee, Han-Joo ;

Ahn, Byungmin ;

Kawasaki, Megumi ;

Langdon, Terence G. .

ACTA MATERIALIA, 2014, 72 :67-79

[32] Critical strain for mechanical alloying of Cu-Ag, Cu-Ni and Cu-Zr by high-pressure torsion [J].

Sun, Y. F. ;

Fujii, H. ;

Nakamura, T. ;

Tsuji, N. ;

Todaka, D. ;

Umemoto, M. .

SCRIPTA MATERIALIA, 2011, 65 (06) :489-492

[33] Microstructure Evolution and Mechanical Properties of Al-Zn-Mg-Cu-Zr Alloy of Heterogeneous Lamellar Structure Processed by High Pressure Torsion [J].

Xue Kemin ;

Wang Boxiaotian ;

Wu Guangshan ;

Yan Siliang ;

Li Ping .

RARE METAL MATERIALS AND ENGINEERING, 2021, 50 (09) :3125-3132

[34] Microstructure and mechanical properties of a biomedical β-type titanium alloy subjected to severe plastic deformation after aging treatment [J].

Yilmazer, H. ;

Niinomi, M. ;

Nakai, M. ;

Hieda, J. ;

Akahori, T. ;

Todaka, Y. .

MATERIALS INTEGRATION, 2012, 508 :152-+

[35] Characterization of microstructure and mechanical properties of Al-Cu-Mg-Ag-(Mn/Zr) alloy with high Cu:Mg [J].

Zhang, Jian Bo ;

Zhang, Yong An ;

Zhu, Bao Hong ;

Liu, Rui Qing ;

Wang, Feng ;

Liang, Qi Ming .

MATERIALS & DESIGN, 2013, 49 :311-317

[36] Structure and mechanical properties of Al-5%Mg-Sc-Zr alloy after cryogenic deformation [J].

Sitdikov, O. Sh. ;

Avtokratova, E. V. ;

Zagitov, R. R. ;

Krymskiy, S. V. ;

Latypova, O. E. ;

Markushev, M. V. .

RUSSIAN PHYSICS JOURNAL, 2024, 67 (10) :1501-1508

[37] Features of structural phase transformations in zirconium Cu-0.18% Zr alloy after high-pressure torsion and heating [J].

Dobatkin, S. V. ;

Janecek, M. ;

Bochvar, N. R. ;

Shangina, D. V. .

LETTERS ON MATERIALS-PIS MA O MATERIALAKH, 2014, 4 (01) :3-6

[38] Tensile deformation characteristics of a Cu - Ni - Si alloy containing trace elements processed by high-pressure torsion with subsequent aging [J].

Watanabe, Hikaru ;

Kunimine, Takahiro ;

Watanabe, Chihiro ;

Monzen, Ryoichi ;

Todaka, Yoshikazu .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2018, 730 :10-15

[39] Structure and mechanical properties of a Zr-1Nb alloy, obtained by the method of severe plastic deformation [J].

Stepanova, E. N. ;

Grabovetskaya, G. P. ;

Mishin, I. P. ;

Bulinko, D. Yu. .

MATERIALS TODAY-PROCEEDINGS, 2015, 2 (01) :365-369

[40] Approaching 1 GPa Ultra-High Tensile Strength in a Nanostructured Al-Zn-Mg-Cu-Zr-Sc Alloy Prepared by Severe Plastic Deformation [J].

Shen, Gaoliang ;

Li, Mingxi ;

Liu, Jiashuo ;

Zheng, Ruixiao ;

Xiang, Zhilei ;

Ma, Xiaozhao ;

Huang, Jingcun ;

Li, Jihao ;

Zhou, Zongyi ;

Chen, Ziyong .

ADVANCED ENGINEERING MATERIALS, 2024, 26 (12)

← 1 2 3 4 5 →