Abstract
Hot workability during hot ring rolling of Ti2AlNb alloy prepared by hot isostatic pressing (HIPing) was studied in this work. Compression results showed that the hot workability of HIP’ed Ti2AlNb was comparable to that of wrought Ti2AlNb. O phase disappeared in compression samples (conducted from 930~1030°C, ~50% total reduction) after deformation which is considered to cause elongation decrease. Finite element method (FEM) was used to predict the temperature/strain distribution during rolling process, and the results indicated that the rolling parameters were very crucial. A sound hot ring rolled billet was successfully fabricated based on an optimized rolling process. Thermal mechanical simulation and FEM are very useful tools for parameters selection during ring rolling.
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