Enhanced bake-hardening response of an Al-Mg-Si-Cu alloy with Zn addition

被引：48
|
作者：
Guo, M. X. [1 ]
Sha, G. [2 ]
Cao, L. Y. [1 ]
Liu, W. Q. [3 ]
Zhang, J. S. [1 ]
Zhuang, L. Z. [1 ]
机构：
[1] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China
[2] Nanjing Univ Sci & Technol, Sch Mat Sci & Engn, Nanjing 210094, Jiangsu, Peoples R China
[3] Shanghai Univ, Key Lab Microstruct, Shanghai 200444, Peoples R China
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2015年 / 162卷
基金：
中国国家自然科学基金;
关键词：
Alloys; Heat treatment; Differential scanning calorimetry (DSC); Mechanical properties; Microstructure; PRECIPITATION; MICROSTRUCTURE; BEHAVIOR; KINETICS;
D O I：
10.1016/j.matchemphys.2015.07.033
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This study reports that Zn addition greatly enhances the bake-hardening response of an Al-Mg-Si-Cu alloy. The pre-aged alloy exhibits a high strength increment of 135 MPa after paint baking. Differential scanning calorimetry, atom probe tomography and high-resolution transmission electron microscopy reveal that Zn addition and pre-aging have significant effects on the solute nanostructure formation. Zn atoms partition into solute clusters/GP zones, and reduce the activation energy of beta" precipitation in the alloy. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：15 / 19
页数：5
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