Accession Number : AD0667379

Title :   DEVELOPMENT OF TOUGH HIGH-STRENGTH ALPHA-BETA TITANIUM-BASE ALLOYS AT 240,000-260,000 PSI YIELD STRENGTH LEVEL.

Descriptive Note : Final rept. 25 Jun 62-30 Apr 66,

Corporate Author : NEW YORK UNIV N Y RESEARCH DIV

Personal Author(s) : Farrar,P. A. ; Margolin,H.

Report Date : SEP 1967

Pagination or Media Count : 345

Abstract : In order to develop titanium alloys with higher ductilities and 0.1% yield strengths in the range of 190,000 to 240,000 psi and usable ductility in the range from 240,000 to 260,000 psi, a total of 57 eight-pound and 2 ten-pound ingots were investigated. Eight alloys which showed promising properties in the 190,000-240,000 psi range as 8 lb. ingots were remelted as 80 lb. ingots for further evaluation as bar, plate and sheet material. Tensile tests at room temperature and -40F impact tests were performed on the bar stock and the plate for the eight ingots. In addition, elevated and low temperature impact, as well as smooth and notch bar tests, were performed on the 1/2 inch bar for the most promising heat treatments. The sheet material was tested at room temperature with the most promising heat treatments being tested at -320F, +400F, +600F, with some of the alloys being tested at +800F and 1000F as well. In addition, limited welding tests were run on the sheet. (Author)

Descriptors :   (*TITANIUM ALLOYS, TOUGHNESS), REDUCTION OF AREA, DUCTILITY, STRENGTH(PHYSIOLOGY), TENSILE PROPERTIES, HEAT TREATMENT, ALUMINUM ALLOYS, VANADIUM ALLOYS, TIN ALLOYS, COPPER ALLOYS, IRON ALLOYS, ZIRCONIUM ALLOYS, CHROMIUM ALLOYS, MOLYBDENUM ALLOYS, NICKEL ALLOYS, TEMPERATURE, SHEETS, CASTINGS, WELDING

Subject Categories : Metallurgy and Metallography
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE