DEVELOPMENT OF PROCEDURES FOR WELDING 2-INCH-THICK TITANIUM-ALLOY PLATE
BATTELLE MEMORIAL INST COLUMBUS OH
Pagination or Media Count:
Low-heat-input welds were made in the Ti-6Al-4V and Ti-5Al-2.5Sn alloy base plate with filler wire that matched the composition of the base plate. Impact and tensile properties were about the same as those obtained in similar welds made with a high heat input. Notch toughness was at least equal to or greater than that of the base plate. In welds made by depositing Ti-6Al-4V filler wire in Ti-5Al-2.5Sn base plate, the tensile properties were about equal to those of the base plate, and the impact properties were very low. The use of A-55 filler wire in Ti-5Al-2.5Sn base plate resulted in impact properties considerably better than those of the base plate. The strength of this weld metal was low. Ti-6Al-4V filler wire deposited in A-70 base plate resulted in impact properties higher than those of the base plate. A yield strength of 120, 000 psi and an elongation of 8.5 were obtained. A weld made by manually depositing a high-purity Ti-6Al filler wire in Ti-6Al-4V base plate had the best impact properties obtained to date.
- Couplers, Fasteners and Joints
- Fabrication Metallurgy