摘要
采用显微组织观察、EDS分析、失重实验和电化学测试研究了固溶和固溶-时效WE43合金的腐蚀性能。结果表明,通过热处理改变基体中第二相,可得到不同腐蚀性能,固溶-时效试样经0和6 h浸泡后的腐蚀速率高于固溶处理试样的腐蚀速率,然而在浸泡24h后腐蚀速率低于固溶处理试样。镁合金在腐蚀过程中,腐蚀速率先减小后增大。通过建立数学模型解释第二相对腐蚀性能的影响,以及腐蚀速率随时间改变的原因。
Microstructure analysis, EDS analysis, mass loss experiment and electrochemical test were used to detect the corrosion performance of WE43 alloy after solution and solution-aging treatment. The result shows that heat treatment changes the second phase in the matrix to obtain different corrosion properties. The corrosion rate of solution-aging samples immersed for 0 and 6 h is higher than that of solution samples, and lower than that of solution sample immersed for 24 h. It is also found that during the corrosion process of WE43 alloy, the corrosion rate decreases first and then increases. Mathematical model was used to explain the relationship between the second phase and corrosion performance, and the reason why the corrosion rate changes with time.
作者
贺龙朝
荆磊
余森
于振涛
He Longchao;Jing Lei;Yu Sen;Yu Zhentao(College of Materials Science and Engineering,Northeastern University,Shenyang 110819,China;Northwest Institute for Nonferrous Metal Research,Xian 710016,China;College of Chemistry and Materials Science,Jinan University,Guangzhou 510632,China)
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2022年第2期484-490,共7页
Rare Metal Materials and Engineering
基金
National Natural Science Foundation of China (2020ZDLGY1)。
