Collaborative Research and Development (CR&D). Delivery Order 0002: Deformation Mechanisms During Hot Working of Titanium

Abstract

This research in support of the Air Force Research Laboratory Materials and Manufacturing Directorate was conducted at Wright-Patterson AFB, Ohio from 2 May 03 through 30 Oct 05. The research examined the stress-strain responses for individual a/B colonies of Ti-6A 1-4V established via uniaxial compression testing at 8l5 deg C for crystals oriented for single slip along specific slip systems. Some samples were designed to enforce the highest Schmidt factor on (a, a, and a) slip on either basal or prism planes. Others were loaded parallel to the c-axis to activate pyramidal slip in the a-phase. The high-temperature stress-strain response showed lower yield strength (soft prism) compared to slip along a (hard prism). Similar anisotropy was observed for basal slip. However, the flow stress for all basal slip systems were always higher than prismatic slip. This anisotropy is a result of the orientation relationship between the a and B phases and the associated misalignment of slip directions in both phases.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 2005
Accession Number
ADA536204

Entities

People

  • Ayman Salem
  • Sheldon Lee Semiatin

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Anisotropy
  • Compression
  • Government Procurement
  • High Temperature
  • Hot Working
  • Manufacturing
  • Materials
  • Metals
  • Military Research
  • Misalignment
  • Orientation (Direction)
  • Shear Stresses
  • Strain Rate
  • Titanium
  • Yield Strength

Readers

  • Materials Science and Engineering.
  • Technical Research and Report Writing.