Microstructure and Corrosion Properties of Duplex-Structured Extruded Mg-6Li-4Zn-xMn Alloys

作     者：Minmin Li Zhe Qin Yan Yang Xiaoming Xiong Gang Zhou Xiaofei Cui Bin Jiang Xiaodong Peng Fusheng Pan Minmin Li;Zhe Qin;Yan Yang;Xiaoming Xiong;Gang Zhou;Xiaofei Cui;Bin Jiang;Xiaodong Peng;Fusheng Pan

作者机构：National Engineering Research Center for Magnesium AlloysChongqing UniversityChongqing400044China State Key Laboratory of Mechanical TransmissionsCollege of Materials Science and EngineeringChongqing UniversityChongqing400044China International Joint Laboratory for Light Alloys(MOE)College of Materials Science and EngineeringChongqing UniversityChongqing400044China 

出 版 物：《Acta Metallurgica Sinica(English Letters)》 (金属学报（英文版）)

年 卷 期：2022年第35卷第5期

页      面：867-878页

核心收录：

学科分类：08[工学] 0806[工学-冶金工程] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：financially supported by the National Key Research and Development Program of China(No.2016YFB0700403) the Chongqing Research Program of Basic Research and Frontier Technology(Nos.cstc2019jcyj-msxmX0306 and cstc2019jcjy-msxmX0539) the National Natural Science Foundation of China(No.52171104) the fundamental Research funds for Central Universities(No.2021CDJJMRH-001) the 111 Project(No.B16007)by the Ministry of Education and the State Administration of Foreign Experts Affairs of China。 

主　　题：Mg-Li alloys Microstructure Extruded Corrosion resistance property 

摘      要：The extruded Mg-6 Li-4 Zn-xMn(x=0,0.4,0.8,1.2 wt%)alloys were prepared,and the microstructure of the test alloys was investigated by optical microscopy,scanning electron microscopy and transmission electron microscopy.The corrosion properties were determined by electrochemical measurements and immersion measurements in 3.5%NaCl solution.The results indicate that the extruded Mg-6 Li-4 Zn-xMn alloys are mainly composed ofα-Mg phase,β-Li phase,Mn precipitates and some intermetallic compounds(MgLi_(2)Zn).With the addition of Mn,stable corrosion products were formed on the surface of the test alloy,which can effectively inhibit further corrosion progress and improve the corrosion resistance.Mg-6 Li-4 Zn-1.2 Mn alloy exhibits the best corrosion resistance,attributed to grain refinement,the improvement of the stability of corrosion product film and uniform distribution of fine second phases.