Accession Number : AD0607404

Title :   THE INFLUENCE OF ALLOYING ELEMENTS ON THE TI-6AL-6V-2SN ALLOY,

Corporate Author : ARMY MATERIALS RESEARCH AGENCY WATERTOWN MASS

Personal Author(s) : Ayvazian,Arthur ; Colton,Robert ; Smoot,Perry

Report Date : AUG 1964

Pagination or Media Count : 8

Abstract : An investigation was conducted on eight promising, highstrength titanium alloys which had as their basic composition Ti-6Al-6V-2Sn. Small percentages of beta-stabilizing elements, such as Cr, Mo, Mn, Ni and U, in various combinations along with a maximum of 4 percent Zr were added. Selection of these alloys was based upon results of a previous U. S. Army Materials Research Agency program. The series of studies consisted of (1) determining the beta transus temperature, (2) determining proper forging temperature, and (3) establishing a thermal cycle, which would result in optimum mechanical properties. The results of standard tensile and V-notch Charpy impact test bars machined from upset billets which were forged and heat treated at optimum investigated temperatures, indicated a general increase in the tensile and yield strength when compared with the base alloy, Ti-6Al-6V-2Sn. The overall improvements in strength ranged from a substantial increase of approximately 15,000 psi in both yield and tensile strengths at 0.1 percent offset for several of the alloys, to an increase of from 0 to 8,000 psi for the remainder of the alloys. (Author)

Descriptors :   (*TITANIUM ALLOYS, MECHANICAL PROPERTIES), ALUMINUM ALLOYS, SILICON ALLOYS, VANADIUM ALLOYS, CHROMIUM ALLOYS, MOLYBDENUM ALLOYS, MANGANESE ALLOYS, NICKEL ALLOYS, URANIUM ALLOYS, TENSILE PROPERTIES, ZIRCONIUM ALLOYS, DEFORMATION, DUCTILITY, MICROSTRUCTURE, HEAT TREATMENT

Distribution Statement : APPROVED FOR PUBLIC RELEASE