DEFORMATION-MECHANISM MAP FOR TI-6 WT-PERCENT AL-ALLOY

A micro-computer program was developed to plot deformation mechanism maps for metals and substitutional solid solutions such as Ti-6 wt% Al. The package written in Turbo Basic is versatile and can be run to print out maps, using the related stored data files. In modelling the maps, the rate equations governing different deformation mechanisms were employed to find the dominant mechanisms and strain rate contours. In particular, the map for Ti-6 wt% Al was generated and it was found that the power law creep dominated over a wider range of stresses and temperatures than that of pure titanium. It is concluded that the strengthening effect of aluminium has shifted the iso-strain rate contours to higher stresses and temperatures.