Application of novel technique to examine thermomechanical processing of near ss alloy Ti-10V-2Fe-3Al

A novel specimen design and testing strategy has been exploited to determin e the effect of thermomechanical processing on the microstructural developm ent of the near beta titanium alloy, Ti-10V-2Fe-3Al. A double truncated con e test geometry was isothermally deformed at near beta transus (similar to 795 degreesC) temperatures, to obtain microstructural information for a ran ge of strains within a single specimen. A finite element modelling package was employed to produce strain profiles, which readily correspond to the eq uivalent microstructural profiles of the test specimens, A parametric study of the effects of process (e.g. friction) and material (e.g. strain rate s ensitivity) parameters on the strain distributions obtained during the test was investigated. Finite element modelling was conducted to interpolate th e friction ring compression test, The effectiveness of this testing strateg y is illustrated with a qualitative description of the microstructural evol ution with strain, for various strain rates, at the sub-beta transus forgin g temperature of 760 degreesC. MST/4601.