Correlation of Properties and Microstructure in Welded Titanium Alloys

Abstract

The purpose of this program was to conduct a systematic investigation to correlate the metallurgical reactions during welding to the mechanical properties and microstructures in a Ti-6Al-6V-2Sn weldment. To study the fusion-zone microstructure resulting from various welding processes (cooling rates) and its mechanical properties, four welding processes, manual gas tungsten-arc welding, plasma arc welding, automatic gas tungsten-arc welding, and electron beam welding, were used. Thermal cycles in the heat-affected zone near the fusion line were measured for the four welding processes and the cooling rates from 2500F were interpolated or extrapolated. Thus, a correlation between welding processes, cooling rates, and the continuous-cooling transformation diagram was established and the relationships between the characteristics of welding processes and CCT diagrams could be identified.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1973
Accession Number
AD0769919

Entities

People

  • K. C. Wu

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aircrafts
  • Alloys
  • Arc Welding
  • Chemistry
  • Corrosion Resistance
  • Gas Tungsten Arc Welding
  • Heat Energy
  • Joints
  • Materials
  • Materials Laboratories
  • Measurement
  • Mechanical Properties
  • Mechanical Working
  • Mechanics
  • Temperature Gradients
  • Tensile Strength
  • Welds

Fields of Study

  • Materials science

Readers

  • Materials Science (Mechanical Engineering).
  • Naval Engineering and Maritime Security
  • Thermal Physics or Thermal Science.

Technology Areas

  • Directed Energy
  • Microelectronics