Effect of Non-Isothermal Aging on the Mechanical Properties and Corrosion Resistance of 2A12 Aluminum Alloy

被引：2
作者：
Yang, Jie [1 ]
Liu, Hongfeng [1 ]
Zeng, Tao [2 ]
Li, Shuai [1 ]
Liu, Zhongying [1 ]
Wu, Tingting [1 ]
Gu, Dongdong [1 ]
机构：
[1] North China Univ Water Resources & Elect Power, Sch Mech Engn, Zhengzhou 450045, Peoples R China
[2] Dalian Univ Technol, Sch Mat Sci & Engn, Dalian 116024, Peoples R China
来源：
MATERIALS | 2023年 / 16卷 / 11期
关键词：
non-isothermal aging; mechanical properties; corrosion properties; ZR ALLOY; BEHAVIOR; STRENGTH;
D O I：
10.3390/ma16113921
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 effect of linear non-isothermal aging and composite non-isothermal aging on the mechanical properties and corrosion resistance of 2A12 aluminum alloy was investigated. Optical microscopy (OM) and scanning electron microscopy (SEM) equipped with energy-dispersive spectroscopy (EDS) were used to study the microstructure and intergranular corrosion morphology, and the precipitates were analyzed using X-ray diffraction (XRD) and transmission electron microscopy (TEM). The results showed that the mechanical properties of 2A12 aluminum alloy were improved by both non-isothermal aging techniques due to the formation of an S ' phase and a point S '' phase in the alloy matrix. Linear non-isothermal aging resulted in better mechanical properties than composite non-isothermal aging. However, the corrosion resistance of the 2A12 aluminum alloy was reduced after non-isothermal aging due to the transformation of matrix precipitates and grain boundary precipitates. The corrosion resistance of the samples followed the order: annealed state > linear non-isothermal aging > composite non-isothermal aging.
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页数：17
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