Accession Number : AD0714562

Title :   The Effect of Processing on Plastic Strain Anisotropy of Ti-6Al-4V,

Corporate Author : AEROSPACE CORP EL SEGUNDO CALIF LAB OPERATIONS

Personal Author(s) : Amateau,Maurice F. ; Dull,Dennis L. ; Raymond,Louis

Report Date : 25 SEP 1970

Pagination or Media Count : 25

Abstract : The plastic strain anisotropy of Ti-6Al-4V was examined after various thermo-mechanical treatments, including heat treating, rolling, and forging. The processing temperatures were varied from room temperature to 1950F. The anisotropy, in terms of the strain ratio R, was measured by post-yield strain gages in the three principal directions. The results were correlated with the (0002) pole figures for each thermomechanical treatment. The plastic strain anisotropy, which was consistent with the basal pole texture, was found to depend upon both the method and the temperature of mechanical working. The greatest R values occurred for the cold-rolled material where the sheet normal rotates to within 15 deg from the basal pole. In addition, R is not constant under uniaxial tension but generally increases with the amount of plastic strain. The variation of R with uniaxial strain depends upon the forming temperature, with the largest changes occurring in samples that were rolled at room temperature. (Author)

Descriptors :   (*TITANIUM ALLOYS, PLASTIC PROPERTIES), (*PRESSURE VESSELS, MANUFACTURING), ELASTIC PROPERTIES, ANISOTROPY, STRAIN HARDENING, LOADS(FORCES)

Subject Categories : Metallurgy and Metallography
      Containers and Packaging
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE