Improved bake-hardening response of Al-Zn-Mg-Cu alloy through pre-aging treatment

被引：104
|
作者：
Lee, Yun-Soo [1 ]
Koh, Dong-Hyeon [1 ,2 ]
Kim, Hyoung-Wook [1 ,3 ]
Ahn, Yong-Sik [2 ]
机构：
[1] Korea Inst Mat Sci, Metall Mat Div, Chang Won 51508, South Korea
[2] Pukyong Natl Univ, Dept Mat Sci & Engn, Busan 48547, South Korea
[3] Korea Univ Sci & Technol, Dept Adv Mat Engn, Daejeon 34113, South Korea
来源：
SCRIPTA MATERIALIA | 2018年 / 147卷
关键词：
Aluminum alloys; Pre-aging; Precipitation; Mechanical properties; ALUMINUM-ALLOYS; SI ALLOY; MECHANICAL-PROPERTIES; PRECIPITATION KINETICS; BEHAVIOR; STRENGTH; MICROSTRUCTURE; DEFORMATION; SHEET;
D O I：
10.1016/j.scriptamat.2017.12.030
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The effect of pre-aging treatment on the bake-hardening response of an Al-Zn-Mg-Cu alloy was investigated. It was determined that pre-aging immediately after quenching is an effective method to form stabilized Guinier-Preston zones, which can act as precursors to form the metastable eta' phase, and then improve the bake-hardening response. Al-Zn-Mg-Cu alloy sheets pre-aged at 120 degrees C for 30 min retained high ductility, similar to that of their natural-aged condition, and demonstrated high strength after bake-hardening treatment. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：45 / 49
页数：5
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