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

被引：0

作者：

L. I. Kaigorodova

D. Yu. Rasposienko

V. G. Pushin

V. P. Pilyugin

S. V. Smirnov

机构：

[1] Russian Academy of Sciences,Institute of Metal Physics, Ural Branch

[2] Russian Academy of Sciences,Institute of Machine Science, Ural Branch

来源：

The Physics of Metals and Metallography | 2015年 / 116卷

关键词：

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

D O I：

暂无

中图分类号：

学科分类号：

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：9

共 50 条

[21] Structure and properties of Mg-Al-Ca alloy after severe plastic deformation
Dobatkin, S. V.
Estrin, Y.
Rokhlin, L. L.
Popov, M. V.
Lapovok, R.
Dobatkina, T. V.
Timofeev, V. N.
Nikitina, N. I.
[J]. NANOMATERIALS BY SEVERE PLASTIC DEFORMATION IV, PTS 1 AND 2, 2008, 584-586 : 559 - 564
[22] Influence of severe plastic deformation on aging effect of Al-Zn-Mg-Cu-Zr alloy
Stolyarov, VV
Latysh, VV
Shundalov, VA
Salimonenko, DA
Islamgaliev, RK
Valiev, RZ
[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1997, 234 : 339 - 342
[23] Microstructural Evolution and Mechanical Properties in Superlight Mg-Li Alloy Processed by High-Pressure Torsion
Su, Qian
Xu, Jie
Li, Yugiao
Yoon, Jae Ik
Shan, Debin
Guo, Bin
Kim, Hyoung Seop
[J]. MATERIALS, 2018, 11 (04):
[24] Age-hardening of an Al-Li-Cu-Mg alloy (2091) processed by high-pressure torsion
Lee, Seungwon
Horita, Zenji
Hirosawa, Shoichi
Matsuda, Kenji
[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2012, 546 : 82 - 89
[25] INFLUENCE OF HIGH-PRESSURE TORSION ON MECHANICAL PROPERTIES AND MICROSTRUCTURAL EVOLUTION IN 2197 Al-Li ALLOY
Yuan, Yuan
Lu, Huimin
Li, Xuguang
[J]. LIGHT METALS 2012, 2012, : 407 - 411
[26] Microstructural evolution and mechanical properties in a Zn-Al eutectoid alloy processed by high-pressure torsion
Cho, Tae-Seong
Lee, Han-Joo
Ahn, Byungmin
Kawasaki, Megumi
Langdon, Terence G.
[J]. ACTA MATERIALIA, 2014, 72 : 67 - 79
[27] Critical strain for mechanical alloying of Cu-Ag, Cu-Ni and Cu-Zr by high-pressure torsion
Sun, Y. F.
Fujii, H.
Nakamura, T.
Tsuji, N.
Todaka, D.
Umemoto, M.
[J]. SCRIPTA MATERIALIA, 2011, 65 (06) : 489 - 492
[28] Microstructure and mechanical properties of a biomedical β-type titanium alloy subjected to severe plastic deformation after aging treatment
Yilmazer, H.
Niinomi, M.
Nakai, M.
Hieda, J.
Akahori, T.
Todaka, Y.
[J]. MATERIALS INTEGRATION, 2012, 508 : 152 - +
[29] Features of structural phase transformations in zirconium Cu-0.18% Zr alloy after high-pressure torsion and heating
Dobatkin, S. V.
Janecek, M.
Bochvar, N. R.
Shangina, D. V.
[J]. LETTERS ON MATERIALS-PIS MA O MATERIALAKH, 2014, 4 (01): : 3 - 6
[30] Structure and mechanical properties of a Zr-1Nb alloy, obtained by the method of severe plastic deformation
Stepanova, E. N.
Grabovetskaya, G. P.
Mishin, I. P.
Bulinko, D. Yu.
[J]. MATERIALS TODAY-PROCEEDINGS, 2015, 2 (01) : 365 - 369

← 1 2 3 4 5 →