Effect of Combined Addition of La and Sm on Mechanical Properties, Microstructure Evolution, and Electrochemical Behavior of Mg-3Zn-1Mn/Sn-0.5Ca Alloy
The effects of the composite addition of La and Sm elements on the microstructural evolution, mechanical properties, and electrochemical behaviors of Mg-3Zn-1Mn/Sn-0.5Ca (wt.%) alloys are systematically investigated. The findings reveal that the Mg-3Zn-1Mn-0.5Ca alloy exhibits excellent ductility, a...
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2024-11-01
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| author | Ke Hu Shuanghai Li Junjie Huang Xiaoming Guo Tingting Tian Xiao Liu Zheng Jia |
| author_facet | Ke Hu Shuanghai Li Junjie Huang Xiaoming Guo Tingting Tian Xiao Liu Zheng Jia |
| author_sort | Ke Hu |
| collection | DOAJ |
| description | The effects of the composite addition of La and Sm elements on the microstructural evolution, mechanical properties, and electrochemical behaviors of Mg-3Zn-1Mn/Sn-0.5Ca (wt.%) alloys are systematically investigated. The findings reveal that the Mg-3Zn-1Mn-0.5Ca alloy exhibits excellent ductility, achieving 26% elongation, whereas the Mg-3Zn-1Sn-0.5Ca alloy demonstrates good comprehensive mechanical properties. The addition of La and Sm results in a degree of grain refinement in both alloys and significantly bolsters the strength of the Mg-3Zn-1Mn-0.5Ca alloy, but it has a less pronounced effect on the mechanical properties of the Mg-3Zn-1Sn-0.5Ca alloy. Furthermore, the addition of La-Sm significantly improves the corrosion resistance of both alloys. Electrochemical impedance spectroscopy (EIS) analysis reveals that all four alloys form a double-capacitance loop morphology in 3.5% NaCl, indicating the formation of a protective film during the corrosion process. Among them, the Mg-3Zn-1Mn-0.5Ca-1La-0.5Sm alloy exhibits the largest capacitance loop radius, which is consistent with its polarization curve, indicating the best corrosion resistance. At the corrosion potential of −1.382V, the corrosion current is 8.97 μA·cm<sup>−2</sup>. |
| format | Article |
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| issn | 2075-4701 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | MDPI AG |
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| spelling | doaj-art-92914a58df5a44f7a8fe6b52462803562025-08-20T02:48:01ZengMDPI AGMetals2075-47012024-11-011411125210.3390/met14111252Effect of Combined Addition of La and Sm on Mechanical Properties, Microstructure Evolution, and Electrochemical Behavior of Mg-3Zn-1Mn/Sn-0.5Ca AlloyKe Hu0Shuanghai Li1Junjie Huang2Xiaoming Guo3Tingting Tian4Xiao Liu5Zheng Jia6School of Materials Science and Engineering, Guangdong Ocean University, Yangjiang Campus, Yangjiang 529500, ChinaSchool of Materials Science and Engineering, Guangdong Ocean University, Yangjiang Campus, Yangjiang 529500, ChinaSchool of Materials Science and Engineering, Guangdong Ocean University, Yangjiang Campus, Yangjiang 529500, ChinaSchool of Materials Science and Engineering, Guangdong Ocean University, Yangjiang Campus, Yangjiang 529500, ChinaSchool of Materials Science and Engineering, Guangdong Ocean University, Yangjiang Campus, Yangjiang 529500, ChinaCollege of Marine Equipment and Mechanical Engineering, Jimei University, Xiamen 361021, ChinaCollege of Mechanical Engineering, Shenyang University, Shenyang 110044, ChinaThe effects of the composite addition of La and Sm elements on the microstructural evolution, mechanical properties, and electrochemical behaviors of Mg-3Zn-1Mn/Sn-0.5Ca (wt.%) alloys are systematically investigated. The findings reveal that the Mg-3Zn-1Mn-0.5Ca alloy exhibits excellent ductility, achieving 26% elongation, whereas the Mg-3Zn-1Sn-0.5Ca alloy demonstrates good comprehensive mechanical properties. The addition of La and Sm results in a degree of grain refinement in both alloys and significantly bolsters the strength of the Mg-3Zn-1Mn-0.5Ca alloy, but it has a less pronounced effect on the mechanical properties of the Mg-3Zn-1Sn-0.5Ca alloy. Furthermore, the addition of La-Sm significantly improves the corrosion resistance of both alloys. Electrochemical impedance spectroscopy (EIS) analysis reveals that all four alloys form a double-capacitance loop morphology in 3.5% NaCl, indicating the formation of a protective film during the corrosion process. Among them, the Mg-3Zn-1Mn-0.5Ca-1La-0.5Sm alloy exhibits the largest capacitance loop radius, which is consistent with its polarization curve, indicating the best corrosion resistance. At the corrosion potential of −1.382V, the corrosion current is 8.97 μA·cm<sup>−2</sup>.https://www.mdpi.com/2075-4701/14/11/1252Mg-3Zn-1Mn/Sn-0.5Ca alloyelectrochemical behaviormicrostructure evolutionmechanical propertiesextrusion |
| spellingShingle | Ke Hu Shuanghai Li Junjie Huang Xiaoming Guo Tingting Tian Xiao Liu Zheng Jia Effect of Combined Addition of La and Sm on Mechanical Properties, Microstructure Evolution, and Electrochemical Behavior of Mg-3Zn-1Mn/Sn-0.5Ca Alloy Metals Mg-3Zn-1Mn/Sn-0.5Ca alloy electrochemical behavior microstructure evolution mechanical properties extrusion |
| title | Effect of Combined Addition of La and Sm on Mechanical Properties, Microstructure Evolution, and Electrochemical Behavior of Mg-3Zn-1Mn/Sn-0.5Ca Alloy |
| title_full | Effect of Combined Addition of La and Sm on Mechanical Properties, Microstructure Evolution, and Electrochemical Behavior of Mg-3Zn-1Mn/Sn-0.5Ca Alloy |
| title_fullStr | Effect of Combined Addition of La and Sm on Mechanical Properties, Microstructure Evolution, and Electrochemical Behavior of Mg-3Zn-1Mn/Sn-0.5Ca Alloy |
| title_full_unstemmed | Effect of Combined Addition of La and Sm on Mechanical Properties, Microstructure Evolution, and Electrochemical Behavior of Mg-3Zn-1Mn/Sn-0.5Ca Alloy |
| title_short | Effect of Combined Addition of La and Sm on Mechanical Properties, Microstructure Evolution, and Electrochemical Behavior of Mg-3Zn-1Mn/Sn-0.5Ca Alloy |
| title_sort | effect of combined addition of la and sm on mechanical properties microstructure evolution and electrochemical behavior of mg 3zn 1mn sn 0 5ca alloy |
| topic | Mg-3Zn-1Mn/Sn-0.5Ca alloy electrochemical behavior microstructure evolution mechanical properties extrusion |
| url | https://www.mdpi.com/2075-4701/14/11/1252 |
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