Investigation on the Microstructure and High Temperature Mechanical Properties of Al3Ti-Mo3Al Two-Phase Alloys
Investigation on the crystallographic orientation relationships among D022-Al3Ti, A15-Mo3Al and high temperature bcc phase consisting of an Al-Mo-Ti ternary alloy with an equi-axed two-phase structure was conducted by FESEM/EBSD analysis. The grains of intermetallic phases have certain crystallographic orientations each other, while the crystallographic orientation distributions become random after a high temperature deformation. This strongly suggests the grain boundary sliding and grain rotating govern the high temperature deformation, which is consistent with the fact that the strain-rate sensitivity m is 0.3 or higher during a steady-state compressive deformation.
Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie
S. Miura et al., "Investigation on the Microstructure and High Temperature Mechanical Properties of Al3Ti-Mo3Al Two-Phase Alloys", Materials Science Forum, Vols. 475-479, pp. 837-840, 2005