In Situ observation on the influence of ß grain growth on texture evolution during phase transformation in Ti-6A-4V

Obasi, G. C.; Moat, R. J.; Prakash, D. G. Leo; Kockelmann, W.; Quinta da Fonseca, J. and Preuss, M. (2011). In Situ observation on the influence of ß grain growth on texture evolution during phase transformation in Ti-6A-4V. Materials Science Forum, 702/3 pp. 854–857.

DOI: https://doi.org/10.4028/www.scientific.net/MSF.702-703.854

Abstract

In the present study, in situ phase transformation experiments have been carried out using neutron diffraction to monitor the texture evolution during the α→ß→α phase transformation in Ti-6Al-4V with and without 0.4% yttrium additions. The aim of adding γttrium was to control ß grain growth above the transus ß by grain boundary pinning. In the present case, strengthening of the ß texture, occurring during ß grain coarsening resulted in strengthening of particular ß texture components, which increases the likelihood of α texture modification by selective growth of α variants on the common (110) ß grain boundaries into unoccupied large β grains.

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