Microstructure response to elevated temperature compression of XD{reg_sign} TiB{sub 2} reinforced Ti-48Al(at.%) composites

Microstructural evolution in elevated temperature compression test samples of a Ti-48Al(at.%) and titanium diboride (TiB{sub 2}) reinforced Ti-48Al(at.%) composites was investigated. During the high temperature deformation process, breakdown of the initial lamellar microstructure is associated with slip, twinning and recrystallization processes. The stress-strain response from the compression testing correlated well with the deformation mechanisms identified from detailed microstructural analysis. The effect of the reinforcement in homogenization of the microstructure during thermomechanical deformation will be discussed.