Interfacial Reaction and Microstructure Evolution of the Matrix in Mo-coated SiC Fiber Reinforced Ti6A14V Composite

摘要：

Ti6Al4V matrix composites reinforced by Chinese SiC fibers with Mo coating as interfacial modification coating was prepared and thermally exposed at 900℃ for up to 100 h. Microstructure of the interface and the matrix in the composite was investigated with the help of scanning electron microscopy, energy dispersive spectroscopy and transaction electron microscopy. The results show that the interfacial reactions and elemental diffusion occur between the columnar Mo coating and Ti6Al4V matrix for the asprepared samples,resulting in β-Ti,lα(Ti) and 2α(Ti) from the Mo coating to the Ti6Al4V, respectively. However, reaction products Ti5Si3 and TiC would be formed in the interfacial region of the samples after thermally exposure. Furthermore, the interfacial formation mechanism was discussed.

关键词： SiC fiber Mo coating titanium matrix composite interfacial reaction phase transformation

作者: X. Luo Y. Q. Yang Q. Sun Y. J. Yu G. M. Zhao W. Zhang

作者单位: School of Materials Science and Engineering, North-western Polytechnical University, Xian 710072, China

会议类型: 国际会议

会议名称: The 12th World Conference Titanium(第十二届世界钛会 Ti-2011)

会议地点: 北京

会议语种:英文

页码: 1494-1498

在线出版日期: 2011-06-19（万方平台首次上网日期，不代表论文的发表时间）