By X-ray diffraction (XRD) analysis, it was found that TiB2 synthesise
d in Al matrix composites and in Al-Ti-B master alloys commonly contai
ned Al. For comparison purposes a simple model was developed to calcul
ate the atomic percentage of Ti which was replaced by Al in TiB2. The
variation of Al content in TiB2, more exactly (Ti, Al)(2), during hold
ing was also studied.