Annual Technical Report.

Abstract

Progress is reviewed for a research program which has examined the multiaxial deformation and fracture behavior of Ti alloys, particulary as influenced by impurities such as hydrogen and by microstructural defects such as porosity. The studies range from experimental and analytical modeling of critical fracture processes to structure-property studies of both wrought material in the form of sheet and powder fabricated material in bar form. Specifically the program has studied: (1) the modeling of ductile fracture through an examination of the deformation and fracture at isolated holes in plane-strain tension; (2) the deformation and fracture of P/M Ti and Ti-6A1-4V containing porosity; (3) the influence of hydrogen on the multiaxial deformation and fracture behavior of beta-phase (bcc) Ti-30V and alpha (hcp)-beta Ti-6A1-4V; and (4) the theory of localized necking of sheet at negative minor strains.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1982
Accession Number
ADA122594

Entities

People

  • Donald A. Koss

Organizations

  • Michigan Technological University

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Alloys
  • Ductility
  • Embrittlement
  • Failure Mode And Effect Analysis
  • Hardening
  • Hydrogen Embrittlement
  • Materials
  • Materials Engineering
  • Mechanical Properties
  • Mechanical Working
  • Plastic Flow
  • Powder Metallurgy
  • Powders
  • Strain Hardening
  • Strain Rate
  • Stresses
  • Triaxial Stresses

Fields of Study

  • Materials science

Readers

  • Materials Science (Mechanical Engineering).
  • Powder metallurgy of Titanium alloys.