WOJTASZEK Marek AGH - University of Science and Technology

Spoluautoři ŚLEBODA Tomasz, CZULAK Andrzej, WEBER Glenn, HUFENBACH Werner

Ti-3Al-8V-6Cr-4Mo-4Zr alloy (Grade 19) belongs to the group of beta-titanium alloys. Among the important properties of this alloy good ductility and high strength can be mentioned. This alloy is often used for producing the structural parts, tubes in oil and gas wells, torsion bars, springs and others. Due to excellent corrosion resistance to seawater, applications of this titanium alloy to marine structures are also promising. It is also used for fasteners and high-performance auto racing applications. That is why the knowledge of the mechanical behaviour of this alloy under dynamic conditions is important. This work is aimed at the analysis of Ti-3Al-8V-6Cr-4Mo-4Zr alloy behaviour at high strain rate and low strain rate conditions. The tensile tests of the investigated alloy were performed in both dynamic and quasi-static conditions. Moreover, ARAMIS system, a non contact and material independent measuring system providing accurate 2D displacements, surface strain values and strain rates, was applied. The influence of tensile test strain rate on chosen mechanical properties of the investigated alloy was also discussed. The investigations showed a significant influence of processing strain rate on the mechanical behaviour of the investigated alloy. The results of the performed investigations can be useful in the design of Ti-3Al-8V-6Cr-4Mo-4Zr alloy structural parts operating under high strain rate conditions.