Abstract
A novel specimen design and testing strategy has been exploited to determine the effect of thermomechanical processing on the microstructural development of the near β titanium alloy, Ti–10V–2Fe–3Al. A double truncated cone test geometry was isothermally deformed at near βtransus (∼795°C) temperatures, to obtain microstructural information for a range of strains within a single specimen. A finite element modelling package was employed to produce strain profiles, which readily correspond to the equivalent microstructural profiles of the test specimens. A parametric study of the effects of process (e.g. friction) and material (e.g. strain rate sensitivity) parameters on the strain distributions obtained during the test was investigated. Finite element modelling was conducted to interpolate the friction ring compression test. The effectiveness of this testing strategy is illustrated with a qualitative description of the microstructural evolution with strain, for various strain rates, at the sub-βtransus forging temperature of 760°C.
Get full access to this article
View all access options for this article.