Open AccessEffect on Corrosion Property of Si in Mg-Al-RE Magnesium Alloy
Author(s) -
Yufeng Jiao,
Yunhui Dou,
Ming Hu,
Jie Zhang,
Lili He,
Xia Chun-yan,
Jianbo Sun,
Jinghuai Zhang
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1649/1/012028
Subject(s) - corrosion , materials science , alloy , metallurgy , eutectic system , magnesium alloy , magnesium , microstructure , grain boundary , 6111 aluminium alloy , polarization (electrochemistry) , phase (matter) , chemistry , organic chemistry
Magnesium and magnesium alloys’ corrosion property is very terrible, Which limits the use of Magnesium and magnesium alloys. Thus, study the corrosion behavior and mechanism is important to improve the development of magnesium alloys’ industry. The study of Mg-Al-RE alloy(AE44, AE44-0.3Si) in simulating seawater with SEM, XRD, weight loss method, hydrogen evolution method, EIS, polarization curve and so on. We can know the microstructure, component and behavior of corrosion electrochemistry. Based on these data discuss corrosion mechanism. The results show as follows: AE44 alloy has terrible corrosion property in simulating seawater; AE44-0.3Si alloy by adding Si in AE44 alloy, Si eutectic react with Mg generates the second phase--Mg 2 Si phase. Mg 2 Si phase clustered at grain boundary or around grain boundary, which has mutual effect with dislocation, improve the corrosion property of Mg-Al-RE Alloy.