Abstract

The paper examines volume changes and evolution of the microstructure and phase composition in solid-phase sintering of compacts produced from titanium and TiAl3 powder mixtures. Metallography, x-ray diffraction, and electron microprobe analysis are used to ascertain the sequence of structural transformations during isothermal holding in sintering. Samples with high content of TiAl₃ intermetallide powder substantially expand in sintering since pores are left after TiAl₃ particles decompose and growing TiAl particles are mutually pushed away.