Effect of titanium carbide addition on the workability behavior of powder metallurgy aluminum preforms during hot deformation

Experimental investigation has been carried out to evaluate the effect of titanium carbide (TiC) addition on the composite aluminium preforms. The hot upsetting of the composite aluminium preforms with varying TiC contents, namely, 1%, 2%, 3% and 4%, and different aspect ratios, namely, 0.2, 0.4 and 0.6, was carried out and the workability behavior of the same was determined. The influence of TiC addition, in the aluminium composite, on the relative density (R), stress ratio parameters, σ_θ, σ_eff and σ_z/σ_eff and formability stress index was studied. The effects of initial preform geometry and initial theoretical density on the workability behavior have been studied.