Tensile Properties and Fracture Toughness of 6Al-4V Titanium

Abstract

Material taken from 6Al-4V titanium rocket motor cases was tested with precrack Charpy impact specimens to evaluate the following as factors affecting plane-stress crack toughness and/or chamber performance: (1) anisotropy and inhomogeneity, (2) forging practice (die, ring-roll and extrusion), (3) interstitial-element chemistry, and (4) test temperature. The material was obtained from 14 hydroburst Minuteman chambers, nine of which were premature-proof-test failures, four were successfully hydroburst chambers, and one failed after 11 proof-test cycles. Material sampling included the immediate vicinity of fracture origins in an attempt to correlate fracture toughness and chamber performance.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1969
Accession Number
AD0857263

Entities

People

  • C. E. Hartbower
  • P. P. Crimmins
  • W. G. Reuter

Organizations

  • Aerojet Rocketdyne Holdings

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Air Force
  • Analysis Of Variance
  • Charpy Impact Tests
  • Chemistry
  • Correlation Analysis
  • Engineering
  • Impact Tests
  • Materials
  • Materials Engineering
  • Materials Laboratories
  • Measurement
  • Mechanics
  • Rocket Engines
  • Statistical Analysis
  • Tensile Properties
  • Tensile Strength
  • Test Methods

Fields of Study

  • Materials science

Readers

  • Materials Science (Mechanical Engineering).
  • Metallurgy
  • Rocket Propulsion.