Dynamic precipitation of Al-Zn alloy during rolling and accumulative roll bonding

被引：26
作者：
Liu, C. Y. [1 ,2 ]
Yu, L. [1 ]
Ma, M. Z. [2 ]
Liu, R. P. [2 ]
Ma, Z. Y. [3 ]
机构：
[1] Guilin Univ Technol, Key Lab New Proc Technol Nonferrous Met Mat, Minist Educ, Guilin 541004, Peoples R China
[2] Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Peoples R China
[3] Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China
来源：
PHILOSOPHICAL MAGAZINE LETTERS | 2015年 / 95卷 / 11期
关键词：
Al-Zn alloy; cold rolling; dynamic precipitation; hardening; SEVERE PLASTIC-DEFORMATION; HIGH-PRESSURE TORSION; MG-SI ALLOY; MECHANICAL-PROPERTIES; GRAIN-REFINEMENT; HIGH-STRENGTH; ARB PROCESS; DUCTILITY; SEGREGATION;
D O I：
10.1080/09500839.2015.1119322
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this study, cold rolling was performed on a binary Al-20wt%Zn alloy and dynamic precipitation identified for the first time in Al alloys under cold rolling. Zn clusters formed after application of 0.6 strain, and the Zn phase precipitated upon further increasing strain. Both grain refinement and rolling-induced defects are considered to promote Zn precipitation. The hardness of Al-Zn alloy initially increased with strain up to a strain of 2.9 and then decreased with increasing rolling strain. Dynamic precipitation greatly affects the strengthening mechanism of the rolled Al-Zn alloy under various strains.
引用
收藏
页码：539 / 546
页数：8
相关论文
共 22 条
[1]   Softening by severe plastic deformation and hardening by annealing of aluminum-zinc alloy: Significance of elemental and spinodal decompositions [J].
Alhamidi, Ali ;
Edalati, Kaveh ;
Horita, Zenji ;
Hirosawa, Shoichi ;
Matsuda, Kenji ;
Terada, Daisuke .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2014, 610 :17-27
[2]   A microstructure-based model for describing the material properties of Al-Zn alloys during high pressure torsion [J].
Borodachenkova, M. ;
Barlat, F. ;
Wen, W. ;
Bastos, A. ;
Gracio, J. J. .
INTERNATIONAL JOURNAL OF PLASTICITY, 2015, 68 :150-163
[3]   The effect of coarse second-phase particles and fine precipitates on microstructure refinement and mechanical properties of severely deformed Al alloy [J].
Gutierrez-Urrutia, I ;
Muñoz-Morris, MA ;
Morris, DG .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2005, 394 (1-2) :399-410
[4]   Effect of a duplex grain size on the tensile ductility of an ultra-fine grained Al-Mg alloy, AA5754, produced by asymmetric rolling and annealing [J].
Jin, H ;
Lloyd, DJ .
SCRIPTA MATERIALIA, 2004, 50 (10) :1319-1323
[5]   The achievement of high strength in an Al 6061 alloy by the application of cryogenic and warm rolling [J].
Kang, U. G. ;
Lee, H. J. ;
Nam, W. J. .
JOURNAL OF MATERIALS SCIENCE, 2012, 47 (22) :7883-7887
[6]   Synthesis of ultra high strength Al-Mg-Si alloy sheets by differential speed rolling [J].
Kim, W. J. ;
Wang, J. Y. ;
Choi, S. O. ;
Choi, H. J. ;
Sohn, H. T. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2009, 520 (1-2) :23-28
[7]   Nanostructural hierarchy increases the strength of aluminium alloys [J].
Liddicoat, Peter V. ;
Liao, Xiao-Zhou ;
Zhao, Yonghao ;
Zhu, Yuntian ;
Murashkin, Maxim Y. ;
Lavernia, Enrique J. ;
Valiev, Ruslan Z. ;
Ringer, Simon P. .
NATURE COMMUNICATIONS, 2010, 1
[8]   Microstructures and mechanical properties of Al/Zn composites prepared by accumulative roll bonding and heat treatment [J].
Liu, C. Y. ;
Zhang, B. ;
Yu, P. F. ;
Jing, R. ;
Ma, M. Z. ;
Liu, R. P. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2013, 580 :36-40
[9]   Superplastic deformation mechanism of an ultrafine-grained aluminum alloy produced by friction stir processing [J].
Ma, Z. Y. ;
Liu, F. C. ;
Mishra, R. S. .
ACTA MATERIALIA, 2010, 58 (14) :4693-4704
[10]   Softening of nanostructured Al-Zn and Al-Mg alloys after severe plastic deformation [J].
Mazilkin, A. A. ;
Straumal, B. B. ;
Rabkin, E. ;
Baretzky, B. ;
Enders, S. ;
Protasova, S. G. ;
Kogtenkova, O. A. ;
Valiev, R. Z. .
ACTA MATERIALIA, 2006, 54 (15) :3933-3939
123