Abstract
Advanced aerospace structures call for the use of structural honeycomb materials for improved load carrying capacity combined with reduced weight. Foils produced from titanium-based alloys are candidate materials for honeycomb applications because of their low density and good intermediate temperature strength properties. The production of foils from titanium-based alloys is difficult, however, principally because of atmospheric contamination during processing. The current state of the art of Ti6Al4V foil production is reviewed and a newly developed foil production method based upon elevated temperature pack rolling is presented. This novel processing method yields a fully dense foil with microstructures, oxygen content and mechanical properties comparable with more massive bar and plate products.
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