Influence of Retrogression and Reaging Treatment on Microstructure and Microhardness of the 3A21/7075 Aluminum Alloy Cladding Material

被引：5
作者：
Hu, Ming [1 ,2 ]
Ren, Xiaoxue [1 ]
Sun, Jianbo [1 ,2 ]
Zhang, Yunlong [1 ,2 ]
机构：
[1] Jiamusi Univ, Coll Mat Sci & Engn, Jiamusi 154007, Heilongjiang, Peoples R China
[2] Met Wear Resistant Mat & Surface Technol Engn Res, Dept Educ, Jiamusi 154007, Heilongjiang, Peoples R China
来源：
INTERNATIONAL JOURNAL OF PHOTOENERGY | 2021年 / 2021卷
关键词：
STRESS-CORROSION-CRACKING; MECHANICAL-PROPERTIES; EVOLUTION; BEHAVIOR; TEXTURE; SLIP;
D O I：
10.1155/2021/6647271
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The 7075 aluminum alloy was an important structural material in the field of aeronautics and astronautics. With the development of this field, the requirements for its comprehensive properties were increasing. A novel casting method, the impact jet solid-liquid compound casting, was adopted to fabricate the 3A21/7075 aluminum alloy cladding material. Retrogression and reaging (RRA) treatment was further applied to the 3A21/7075 aluminum alloy cladding material in order to investigate the influence of RRA on microstructure and microhardness of the 3A21/7075 aluminum alloy cladding material. Then, the electron backscattered diffraction (EBSD) technique and the transmission electron microscope (TEM) together with the energy dispersive spectrometer (EDS) and the hardness test were utilized to analyze the influence of RRA treatment on microstructure and hardness of the 3A21/7075 aluminum alloy cladding material. The research results showed the 3A21/7075 aluminum alloy cladding material had better deformability. The amount of fine and dispersed phases precipitated in grains was in favor of improving the comprehensive mechanical properties of the 3A21/7075 aluminum alloy cladding material. This research might provide data and a theoretical approach for the engineering application of the 3A21/7075 aluminum alloy cladding material.
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页数：9
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