采用XRD、SEM、EBSD、TEM、EDS以及三维组织重构方法系统研究原位Be元素的Ti基非晶复合材料Ti47Zr19Cu5V12Be17(摩尔分数，%)中晶体相的形态、尺寸、成分和体积分数，并采用STEM?EELS证明Be元素仅仅分布在非晶基体中。在此基础上，准确地得到了晶体相和非晶基体的化学成分分别为 Ti62.4Zr18.4Cu2.6V16.6和Ti28.3Zr19.7Cu8V6.4Be37.6(摩尔分数，%)，相应的体积分数分别为61.5%和38.5%，该结果对设计原位含Be非晶复合材料具有重要的指导意义。
Themorphologies, sizes, compositions and volume fractions of dendritic phases ininsituTi-based metallic glass matrix composites (MGMCs) containing beryllium(Be)with the nominal composition of Ti47Zr19Cu5V12Be17(mole fraction,%)were investigatedusing XRD, SEM, EBSD, TEM, EDS and three-dimensional reconstruction method. Moreover, visualized at the nanoscale, Be distribution is confirmed to be only present in the matrix usingscanning transmission electron microscopy?electron energy loss spectroscopy (STEM?EELS). Based on these findings,it has been obtained that the accurate chemical compositionsare Ti28.3Zr19.7Cu8V6.4Be37.6(mole fraction,%)forglass matrixandTi62.4Zr18.4Cu2.6V16.6(mole fraction,%)forthe dendritic phases, and the volume fractions are 38.5% and 61.5%, respectively. It is believed that the results are of particular importance for thedesigning of Be-containing MGMCs.
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