@article{Dong2025, 
author = {Xiaorui Dong and Min Zha and Dawei Wang and Siqing Wang and Yajie Yang and Hailong Jia},
title = {Enhancing corrosion resistance of Mg-Al-Mn-Ca-Y dilute alloy via novel core-shell structured Al8Mn4Y-Al2Ca and controllable solute segregation},
year = {2025},
journal = {Journal of Magnesium and Alloys},
volume = {13},
number = {1},
pages = {172-192},
keywords = {Mg-Al-Mn-based alloys, Core-shell structure, Solute segregation, Corrosion behavior, Protective film},
url = {https://www.sciopen.com/article/10.1016/j.jma.2023.10.009},
doi = {10.1016/j.jma.2023.10.009},
abstract = {A novel core-shell structured Al8Mn4Y-Al2Ca phase and controllable solute-segregation are elaborately designed in dilute Mg-0.6Al-0.5Mn-0.1Ca-0.1Y alloy (wt.%), via incomplete peritectic transformation during twin-roll casting. When soaked in 3.5 wt.% NaCl solution, Al2Ca shell with a low electrochemical potential prevents direct contact of noble Al8Mn4Y with Mg matrix, mitigating the micro-galvanic corrosion and meanwhile accelerating the formation of uniform corrosion film. Thereafter, solute (Al, Ca)-segregation motivates the formation of heterogeneous multilayered corrosion product films, enhancing corrosion resistance and even achieving self-healing upon long-term corrosion. Notably, the dilute Mg alloy exhibits a corrosion rate as low as 0.22 ± 0.05 mm·y−1.}
}