XD(TM) Reinforced Beryllium-Based Composites

Abstract

The objective of this program is to demonstrate the feasibility of using fine particle inoculants called dispersoids to produce fine-grained beryllium castings. Such castings would be much less expensive than beryllium- based materials produced by conventional powder metallurgy. Beryllium is an attractive candidate for lightweight aerospace applications. It has higher melting temperature and greater tensile strength than either magnesium or aluminum, a higher strength-to-weight ratio than either metal, and a lower thermal coefficient of expansion and higher specific heat. Its modulus of elasticity is four times that of aluminum. The low density and high modulus of beryllium and beryllium based intermetallics make them ideal materials for aerospace applications requiring high dimensional stability and low weight.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1990
Accession Number
ADA235863

Entities

People

  • Al Bopp
  • Fritz Grensing
  • Wendell Meyerer

Organizations

  • Martin Marietta

Tags

Communities of Interest

  • Energy and Power Technologies
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Alloys
  • Chemical Reactions
  • Chemical Synthesis
  • Chemistry
  • Composite Materials
  • Diffraction
  • Grain Size
  • Heat Energy
  • Materials
  • Materials Laboratories
  • Mechanical Properties
  • Mechanical Working
  • Particle Size
  • Phase Diagrams
  • Powder Metallurgy
  • Tensile Strength
  • X Rays

Fields of Study

  • Materials science

Readers

  • Metallurgy
  • Powder metallurgy of Titanium alloys.

Technology Areas

  • Space