Induction Melting and Casting of Titanium Alloy Aircraft Components

Abstract

Induction melting of titanium alloys using a semi-levitation technique and bottom pouring in graphite crucible was evaluated for four titanium alloys. Ti-6Al-4V, Ti-6Al-2Sn-4Zr-2Mo, Ti-3Al-8V-6Cr-4Mo-4Zr (Beta C), and Ti-11Mo-4.5Sn-6Zr (Beta 111). Precision investment (lost wax) casting molds coated with pyrolytic graphite were used with the melting technique to make castability, tensile specimen, and bearing housing segment castings. Castability and tensile properties of the alloys were characterized. Bearing housing segments were subject to porosity which was extensively studied. Process capabilities and limitations were investigated for induction melting and the pyrolytic graphite coated mold. Properties of castings were determined, and weldability of the four cast alloys evaluated. Effects of the casting process on microstructure were investigated.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1972
Accession Number
AD0905524

Entities

People

  • Charles R. Cook
  • Thomas S. Piwonka

Tags

Communities of Interest

  • Energy and Power Technologies
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Aircraft Equipment
  • Aircrafts
  • Ceramic Materials
  • Chemical Synthesis
  • Chemistry
  • Gas Tungsten Arc Welding
  • Manufacturing
  • Materials
  • Materials Laboratories
  • Measurement
  • Mechanical Properties
  • Melting Point
  • Refractory Metals
  • Stress Corrosion
  • Tensile Properties
  • Test And Evaluation
  • Titanium Alloys

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Metallurgy