Effect of Precipitated Phases on Corrosion of Mg95.8Gd3Zn1Zr0.2Alloy with Long-Period Stacking Ordered Structure
来源期刊：Acta Metallurgica Sinica2016年第1期
论文作者：Xi-Mei Zong Dan Wang Wei Liu Kai-Bo Nie Chun-Xiang Xu Jin-Shan Zhang
文章页码：32 - 38
摘 要：The microstructure of the precipitated phases of Mg95.8Gd3Zn1Zr0.2 alloys with long-period stacking ordered structure before and after heat treatment is discussed.The corrosion properties of the as-cast（F）,solid-solution（T4） and aging-treated（T6） alloys in 1%NaCl solution are studied.The hydrogen evolution and electrochemical measurements display that the as-cast Mg95.8Gd3Zn1Zr0.2 alloy with the continuous network eutectic phase exhibits the greatest corrosion resistance,while T6 sample with some needle-like phases and the particle phases is the worst among the three alloys.It is proposed to be mainly related to the amount,composition,microstructure and distribution of the precipitated phases.
Xi-Mei Zong1,2,3，Dan Wang1,2，Wei Liu1,2，Kai-Bo Nie1,2，Chun-Xiang Xu1,2，Jin-Shan Zhang1,2
1. College of Materials Science and Engineering,Taiyuan University of Technology2. Shanxi Key Laboratory of Advanced Magnesium-Based Materials3. Department of Chemistry,Taiyuan Normal University
摘 要：The microstructure of the precipitated phases of Mg95.8Gd3Zn1Zr0.2 alloys with long-period stacking ordered structure before and after heat treatment is discussed.The corrosion properties of the as-cast（F）,solid-solution（T4） and aging-treated（T6） alloys in 1%NaCl solution are studied.The hydrogen evolution and electrochemical measurements display that the as-cast Mg95.8Gd3Zn1Zr0.2 alloy with the continuous network eutectic phase exhibits the greatest corrosion resistance,while T6 sample with some needle-like phases and the particle phases is the worst among the three alloys.It is proposed to be mainly related to the amount,composition,microstructure and distribution of the precipitated phases.
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