Ti-6Al-4V alloys and Ti-6Al-4V-10%TiB MMCs have been produced by a modified blended elemental powder metallurgy (MBEPM) method, which is characterised by using low cost titanium sponge fines as raw materials and attriting the titanium sponge fines before blending with other powders for alloying and reinforcement. This paper reports the effects of processing conditions on the microstructures and mechanical properties of the as produced Ti-alloys and Ti-MMCs. Experimental results show that attrition of the raw titanium powders for a suitable period of time reduces the porosity level and refines the final as sintered microstructure. This, in turn, results in an increase in strength and ductility for both Ti-6Al-4V alloys and Ti-6Al-4V-10%TiB MMCs. Excessive attrition, however, induces the opposite effect. In addition, it is found that the sintering behaviour of Ti-6Al-4V-10%TiB MMCs is very different from that of Ti-6Al-4V alloys. With increasing sintering time, the porosity in Ti-6Al-4V alloys decreases continuously, while the porosity in Ti-6Al-4V-10%TiB MMCs decreases rapidly in the initial stages of sintering and then increases in the later stages.
