An Evaluation of Some High Strength Titanium Alloys Processed in Heavy Sections

Abstract

Utilization of advanced titanium alloys in heavy sections depends to a large extent on the ability to fabricate these sections. This study is concerned with the high strength alpha-beta alloy Ti-6Al-6V-2Sn (Ti-662) and the metastable beta alloy ti-8Mo-8V-2Fe-3Al (Ti-8823) and their fabrication in large sections. The extrusion technique utilized to achieve better than a 6:1 reduction ratio for a heavy section cylindrical hollow of this alloy is described. Following extrusion, the alloys were given one of two heat treatments: for the Ti-662 the solutionize and age or solutionize and overage heat treatments; for the Ti-8823 alloy the commonly suggested solutionize and age heat treatment or a direct age without the intermediate solutionized. The influence of these heat treatments is given in terms of microstructure and mechanical properties (yield strength, tensile strength, elongation, reduction of area, and fracture toughness).

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1975
Accession Number
ADA022494

Entities

People

  • Richard Chait
  • Thomas S. Sesisto

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircrafts
  • Alloys
  • Army Aviation
  • Ductility
  • Fabrication
  • Heat Treatment
  • Manufacturing
  • Materials
  • Mechanical Properties
  • Mechanical Working
  • Mechanics
  • Metals
  • Reduction Of Area
  • Tensile Properties
  • Tensile Strength
  • Titanium Alloys
  • Yield Strength

Fields of Study

  • Materials science

Readers

  • Metallurgy