CAJ | 학술논문

针对单一镁合金耐蚀性差的问题，利用液固复合法制备了Mg／Al双金属复合材料，采用光学显微镜（ OM）、扫描电镜（SEM）、能谱分析（EDS）以及X 射线衍射（XRD）对材料界面组织和相组成进行了分析。试验结果表明：当以AZ91D为浇注金属，浇注温度为660～680℃时，炉冷、双金属AZ91D和Zl105可获得良好的冶金结合界面；合金界面共分为5个明显区域，镁合金基体侧为Mg基固溶体和Mg17 Al12，铝合金基体侧为铝基固溶体和Al3 Mg2，界面中间区域则为Al3 Mg2和弥散析出的中间相Mg2 Si。
침대단일미합금내식성차적문제，이용액고복합법제비료Mg／Al쌍금속복합재료，채용광학현미경（ OM）、소묘전경（SEM）、능보분석（EDS）이급X 사선연사（XRD）대재료계면조직화상조성진행료분석。시험결과표명：당이AZ91D위요주금속，요주온도위660～680℃시，로랭、쌍금속AZ91D화Zl105가획득량호적야금결합계면；합금계면공분위5개명현구역，미합금기체측위Mg기고용체화Mg17 Al12，려합금기체측위려기고용체화Al3 Mg2，계면중간구역칙위Al3 Mg2화미산석출적중간상Mg2 Si。
In order to solve the problem of poor corrosion resistance of the single magnesium material, the Mg/Al bimetal composite was prepared by the liquid-solid compound processing method.The interface and phase constitu-ents of this composite were analyzed by optical microscope ( OM) , scanning electron microscope ( SEM) , energy dispersive spectrometer (EDS), and Xr-ay diffraction (XRD).The test results indicated that AZ91D and ZL105 can combine well when AZ91D is used as the molten metal.This is achieved by setting pouring temperature in the range from 660℃to 680℃and then cooling in the furnace.There are five new phase layers in the interface transi-tion zone:the Mg-based layer is composed of solid solution of Mg and Mg17 Al12 , the Al-based layer is composed of solid solution of Al and Al3 Mg2 , and in the middle of layer there are Mg2 Al3 and precipitated middle phased Mg2 Si.