Corrosion Behavior of Semi-Solid Formed Mg–Zn–Zr–Nd Alloy
Hao SunKey Laboratory of Lightweight Structural Materials Liaoning Province, Northeastern UniversityZhanyong ZhaoSchool of Materials Science and Engineering, North University of ChinaZhi WangSchool of Materials Science and Engineering, Shenyang University of TechnologyWeirong LiDongguan EONTEC Co. LtdJiangwei YuKey Laboratory of Lightweight Structural Materials Liaoning Province, Northeastern UniversityFei GaoKey Laboratory of Lightweight Structural Materials Liaoning Province, Northeastern UniversityMinghui CaiKey Laboratory of Lightweight Structural Materials Liaoning Province, Northeastern UniversityYanfang LiEngineering Research Center of Continuous Extrusion, Dalian Jiaotong UniversityGiyasov Shukhrat IskandarovichDepartment of Urology, Tashkent Medical AcademyDi TieDongguan EONTEC Co. Ltd
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Аннотация
An as-cast Mg–6Zn–0.9Zr–0.9Nd (mass%) alloy was isothermally heat treated to form semi-solid microstructure, and its corrosion behaviors before and after heat treatment were revealed. During the isothermal heat treatment, the microstructure transformed into homogenous spheroidized structure, and the liquid phase presented network-shaped morphology. The electrochemical results showed that there is no passivation behavior and obvious local corrosion in the semi-solid formed alloy, and homogeneous general corrosion is the primary corrosion form. The network-shaped liquid phase prevented the flow of corrosion media between solid phases, and therefore inhibited the formation of pitting corrosion.
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