Formation Process of Ti-Al Intermetallics during Solid-Liquid Reaction between Titanium and Aluminum Foils
The formation process of Ti-Al intermetallics from the elemental titanium and aluminum foils has been investigated. In order to study the reactive process of the solid-Ti/liquid-Al bonding,different processing conditions were employed. The microstructures and phase formation of the obtained samples were characterized by electron probe microanalyzer (EPMA) equipped with an energy dispersive spectroscopy (EDS),X-ray diffraction instrument (XRD) and differential scanning calorimetry (DSC). The results show that annealing above the Al melting point results in the selfpropagating high-temperature synthesis (SHS) reaction between solid Ti and liquid Al;according to a modified effective heat of formation model applied to the Ti-Al system,TiAl3 is predicted to the appear as the first phase in the raction.as well as subsequent formation of TiAl between Ti and TiAl3 layers;Ti3Al would be formed between Ti/TiAl interfaces and TiAl2 would be formed between TiAl/TiAl3 interfaces;the solid-state reaction is dominated by the competing diffusion among Ti/α-Ti/Ti3Al/TiAl/TiAl2/TiAl3 couples, and eventually a multilayered sheet of Ti3 Al and TiAl is achieved.
Ti-Al intermetallics self-propagating high-temperature synthesis (SHS) diffusion reaction foil
Yanbo Sun Tingting Wang Di Zhang Yeqing Zhao Shasha Zhao Chaoli Ma
Key Laboratory of Aerospace Advanced Materials and Performance of Ministry of Education ,School of M Key Laboratory of Aerospace Advanced Materials and Performance of Ministry of Education , School of
国际会议
The 12th World Conference Titanium(第十二届世界钛会 Ti-2011)
北京
英文
1506-1510
2011-06-19（万方平台首次上网日期，不代表论文的发表时间）