Distribution of Be in a Ti-Based Bulk Metallic Glass Composite Containing B-Ti

作     者：L.Zhang W.Q.Li Z.W.Zhu H.M.Fu H.Li Z.K.Li H.W.Zhang A.M.Wang H.F.Zhang L. Zhang W.Q. Li Z.W. Zhu H.M. Fu H. Li Z.K. Li H.W. Zhang A.M. Wang H.F. Zhang

作者机构：Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences 110016 Shenyang China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2017年第33卷第7期

页      面：708-711页

核心收录：

学科分类：0817[工学-化学工程与技术] 0806[工学-冶金工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 0802[工学-机械工程] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：support from the National Natural Science Foundation of China (Nos. 51434008, U1435204, and 51531005) the China’s Manned Space Station Project (Mission No.: TGJZ800-2-RW024) the Shuangchuang Project of Jiangsu Province, China 

主　　题：Bulk metallic glass(BMG) Metallic glass composite Beryllium Quasi equilibrium 

摘      要：In order to obtain a glassy matrix during quenching, Be is often selected as a constituent of the compositions of Ti/Zr-based bulk metallic glass composites（BMGCs）. The in situ formed β phase in Be-bearing BMGCs was reported to be Be-free. However, a thorough investigation of the distribution of Be in BMGCs is still missing to date. In this work, the distribution of Be in a Ti_（47.5）Zr_（33）Cu_（5.8）Co_3Be_（12.5）（at.%） BMGC was studied by the secondary ion mass spectrometry（SIMS） and the electron energy loss spectroscopy（EELS）.It is found that Be almost totally dissolves in the glassy matrix, but a very weak intensity of Be in β phase is still detectable by SIMS, and the content of Be in β-Ti is estimated to be about 0.3 at.%. Based on the recently established two-phase quasi-equilibrium of BMGCs, the distinct solubility of Be in the glassy matrix and in β-Ti has been explained.