1991 年 31 巻 10 号 p. 1080-1087
In the development of high temperature intermetallics, it has become evident that it is essential to consider the strong influence of materials processing. Among the fundamental data needed for effective processing are the relevant phase diagrams, the characteristic diffusivities and possible solidification reaction pathways. In the Ti-Al system recent advances in the clarification of the phase diagram have had a direct impact on the analysis of phase stability and crystal growth processes. Building on the binary phase equilibria, it has been possible to develop new insight into the Ti-Al-Nb ternary system and the identification of ternary intermetallic phase reactions. Similarly, diffusion couple studies have allowed for an analysis of reaction rates that is a necessary bases for an effective microstructural control and design strategy especially in the case of intermetallic matrix composites.
