Effects of thermomechanical processing on production of Al-Zn-Mg-Cu alloy plate

被引：28

作者：

Deng, Yunlai ^{[1
,2
]}

Zhang, Yunya

Wan, Li

Zhang, Xinming ^{[2
]}

机构：

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

[2] Cent S Univ, Minist Educ, Key Lab Nonferrous Met Mat Sci & Engn, Changsha 410083, Hunan, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2012年 / 554卷

关键词：

Microanalysis; Aluminum alloys; Thermomechanical processing; Phase transformation; Recrystallization; BOUNDARY DISTRIBUTIONS; RECRYSTALLIZATION; MICROSTRUCTURES; EVOLUTION; BEHAVIOR; TEXTURES;

D O I：

10.1016/j.msea.2012.05.102

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

An Al-7.81Zn-1.81Mg-1.62Cu alloy was subjected to a kind of thermomechanical processing involving solution annealing, quenching, pre-precipitation and warm rolling, with the aim of finding a new efficient way to prevent recrystallization in Al-Zn-Mg-Cu (7XXX) series alloys. On the basis of information on the microstructures from optical metallography (OM) and transmission electron microscopy (TEM), and on the textures from orientation distribution functions (ODFs), we learn that during subsequent solution treatment, appropriate nano/submicron-scale MgZn2 particles, which are precipitated in the thermomechanical processing, inhibit the migration of grain/sub-grain boundaries, and do not induce particle stimulated nucleation (PSN), thus leading to a remarkable decrease in the recrystallized fraction. Suitable thermomechanical processing produced an ultimate tensile strength of 528 MPa and yield strength of 459 MPa, as well as good intergranular corrosion (IGC) resistance. (c) 2012 Elsevier B.V. All rights reserved.

引用

页码：33 / 40

页数：8

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