Superplastic Aluminum Evaluation

Abstract

With the development of a process to produce fine grain aluminum alloys, it is now possible to superplastically form (SPF) structural aircraft components. This document presents results from several important areas which are considered to be critical to providing a realistic assessment of the technical and economic potential for superplastic forming structures using a high strength 7475 aluminum alloy. Areas of study included (1) the evaluation of structural applications; (2) the determination of superplastic forming limits; (3) a microstructural study of cavities formed during superplastic deformation; (4) the application of hydrostatic gas pressures to suppress cavitation, and (5) the effect of superplastic deformation on subsequent service properties.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1981
Accession Number
ADA107760

Entities

People

  • C. W. Hamilton
  • M. W. Mahoney

Tags

Communities of Interest

  • Air Platforms
  • Space

DTIC Thesaurus Topics

  • Aircraft Equipment
  • Back Pressure
  • Creep
  • Fabrication
  • Fatigue Life
  • Materials
  • Measurement
  • Mechanical Properties
  • Mechanical Working
  • Mechanics
  • Particles
  • Sheet Metal
  • Strain Hardening
  • Structural Components
  • Tensile Properties
  • Tensile Strength
  • Tensile Testing

Fields of Study

  • Materials science

Readers

  • Powder metallurgy of Titanium alloys.
  • Systems Analysis and Design