The Influence of Chemistry and Heat Treatment on the Mechanical Properties of Ti-3Al-2.5V Alloy

Over the past several years, the usage of Ti-3Al-2.5V for fastener applications has grown significantly.  As the amount of composite used in airframes has increased, the number of titanium fasteners has also significantly increased.  This change has also lead to an increase in the number of collars and sleeves used in the fastening systems.  TheTi-3Al-2.5V alloy has been selected for these types of applications due to its ability to be cold formed and maintain moderate strength levels.  Sleeves and collars had historically been produced from commercially pure titanium or stainless alloys.   This study will evaluate the influence of chemistry, processing, and heat treatment on the properties and microstructure of this alloy.