The dynamic evolution of microstructure and mechanical properties of an Al-Cu-Li alloy during multi-axial compression

被引：9

作者：

Lu, Yuan ^{[1
]}

Xu, Zhuoqing ^{[1
]}

Xu, Xiaochang ^{[1
]}

机构：

[1] Cent South Univ, Sch Mat Sci & Engn, Changsha 410083, Peoples R China

来源：

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2021年 / 14卷

关键词：

MAC; Al-Cu-Li alloy; Dynamic precipitation; Mechanical properties; NUCLEATION; PRECIPITATION; DEFORMATION; STRESS;

D O I：

10.1016/j.jmrt.2021.07.106

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A 2297 aluminum-lithium alloy was subjected to multi-axial compression (MAC) at 160 degrees C to obtain different cumulative strains. The room temperature tensile test, transmission electron microscopy and X-ray diffraction techniques were used to study the microstructural evolution and mechanical properties of Al-Cu-Li alloy. It was observed that the ultimate tensile strength was increased from 267 MPa to 480 MPa and the hardness was increased from 55 HV to 141 HV by high-density dislocations and precipitation phases. Due to the massive amount of precipitation occurring at dislocations and the subsequent high strain introduced to destroyed it, the size of the precipitates was effectively reduced, the fine precipitates delayed the strain localization, the alloy obtained high elongation (similar to 11.2 %). (C) 2021 The Author(s). Published by Elsevier B.V.

引用

页码：2513 / 2521

页数：9

共 37 条

[1] Strengthening mechanisms, deformation behavior, and anisotropic mechanical properties of Al-Li alloys: A review [J].

Abd El-Aty, Ali ;

Xu, Yong ;

Guo, Xunzhong ;

Zhang, Shi-Hong ;

Ma, Yan ;

Chen, Dayong .

JOURNAL OF ADVANCED RESEARCH, 2018, 10 :49-67

[2] Thermal stability of microstructure, mechanical properties, formability parameters and crystallographic texture in an Al-7075 alloy processed by accumulative roll bonding [J].

Alejandro Velazquez-Carrillo, Omar ;

Alfredo Garcia-Pastor, Francisco .

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T, 2021, 11 :2208-2220

[3] Partial dissolution of strengthening particles induced by equal channel angular pressing in an Al-Li-Cu alloy [J].

Cabibbo, Marcello .

MATERIALS CHARACTERIZATION, 2012, 68 :7-13

[4] MECHANISM OF AL2CULI (T1) NUCLEATION AND GROWTH [J].

CASSADA, WA ;

SHIFLET, GJ ;

STARKE, EA .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1991, 22 (02) :287-297

[5] Effect of cold rolling pre-deformation on microstructure and properties of V-1469 Al-Li alloy [J].

Chen, W. B. ;

Xiao, D. H. ;

Wu, M. D. ;

Huang, J. ;

Huang, L. P. ;

Liu, W. S. .

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T, 2020, 9 (05) :9675-9683

[6] Combinative hardening effects of precipitation in a commercial aged Al-Cu-Li-X alloy [J].

Chen, Zhongwei ;

Zhao, Kai ;

Fan, Li .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2013, 588 :59-64

[7] A comparison of the properties of SPD-processed AA-6061 by equal-channel angular pressing, multi-axial compressions/forgings and accumulative roll bonding [J].

Cherukuri, B ;

Nedkova, TS ;

Srinivasan, R .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2005, 410 :394-397

[8] Precipitation kinetics in a severely plastically deformed 7075 aluminium alloy [J].

Deschamps, A. ;

De Geuser, F. ;

Horita, Z. ;

Lee, S. ;

Renou, G. .

ACTA MATERIALIA, 2014, 66 :105-117

[9] High strength and good electrical conductivity in Cu-Cr alloys processed by severe plastic deformation [J].

Dobatkin, S. V. ;

Gubicza, J. ;

Shangina, D. V. ;

Bochvar, N. R. ;

Tabachkova, N. Y. .

MATERIALS LETTERS, 2015, 153 :5-9

[10] Atomic structure of T1 precipitates in Al-Li-Cu alloys revisited with HAADF-STEM imaging and small-angle X-ray scattering [J].

Donnadieu, P. ;

Shao, Y. ;

De Geuser, F. ;

Botton, G. A. ;

Lazar, S. ;

Cheynet, M. ;

de Boissieu, M. ;

Deschamps, A. .

ACTA MATERIALIA, 2011, 59 (02) :462-472

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