Achieving high strength-ductility properties of wire-arc additive manufactured Al-Mg-Sc aluminum alloy via friction stir processing post-treatment and high temperature aging treatment

被引：12
作者：
Cui, Jiayuan [1 ]
Guo, Xinpeng [2 ]
Hao, Shuai [1 ]
Guo, Xuming [1 ]
Xu, Rongzheng [1 ]
机构：
[1] Shenyang Aerosp Univ, Sch Mat Sci & Engn, Shenyang 110136, Peoples R China
[2] Univ Wollongong, Sch Mech Mat & Mechatron & Biomed Engn, Wollongong, NSW 2522, Australia
来源：
MATERIALS LETTERS | 2023年 / 350卷
关键词：
Wire -arc additive manufacturing; Al-Mg-Sc alloy; Friction stir processing post -treatment; High temperature aging treatment; Microstructure refinement; Mechanical property;
D O I：
10.1016/j.matlet.2023.134913
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this study, the high strength-ductility properties of wire-arc additive manufactured (WAAM) Al-Mg-Sc aluminum alloy were achieved by friction stir processing post-treatment (FSPPT) and high temperature aging treatment (HTAT). The FSPPT significantly refined the microstructure and eliminated porosity defects, which the average grain size was about 2.4 +/- 0.2 mu m in stirring zone (SZ). There was no obvious growth in grain size after HTAT and the average grain size was about 2.7 +/- 0.4 mu m in SZ. Many fine secondary Al3(Sc,Zr) phases were precipitated. Compared to WAAM sample, the average ultimate tensile strength (UTS), yield strength (YS) and elongation (EL) of FSPPT + HTAT sample increased by 57.9%, 54.7% and 205.9%, respectively.
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页数：6
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