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

被引：23
|
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
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