Recent research relating to two α+β processed titanium alloys, designed for specific employment in aeroengine fan disc and aerofoil components, is described. Timetal 575 (Ti575) and Timetal 639 (Ti639) are both novel compositions that provide relatively high strength compared to Ti–6Al–4V. Static and cyclic behaviour of the two developmental alloys were evaluated at room temperature. A dwell fatigue assessment of Ti575 is reported, while the effects of unidirectional rolling and associated evolution of microtexture were studied for Ti639.

 

J. S. Hewitt¹, P. D. Davies¹, M. J. Thomas², P. Garratt² and M. R. Bache¹

1. College of Engineering, Swansea University, Singleton Park, Swansea SA2 8PP, UK
2. TIMET UK, PO Box 704, Witton, Birmingham, UK

Materials Science and Technology, 30:15, Pages 1919-1924, doi: 10.1179/1743284714Y.0000000669