Development of Laminate Metal Matrix Composites.

Abstract

Boron carbide-reinforced titanium laminate composites were fabircated containing up to 50 percent B4C volume fraction with interlaminar spacings in the range 7 - 25 micrometers. Mechanical properties increased with B4C content. At the 50 percent B4C level, the biaxial tensile elastic modulus was 245 GN/sq, and the biaxial fracture strength was approximately 665 MN/sq at 20C and about 300 MN/sq at 650C. Fracture energy values derived from Charpy impact tests were 40.7 KJ/sq for loads applied transverse to the laminar plane and 25.4 KJ/sq for loads applied parallel to the laminar plane. The B4C-Ti laminates resisted extended cyclic thermal exposures to 650C with minimal residual strength loss or distortion. (Author)

Document Details

Document Type
Technical Report
Publication Date
May 01, 1972
Accession Number
AD0745002

Entities

People

  • M. J. Hordon

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Boron Carbides
  • Calorific Value
  • Charpy Impact Tests
  • Composite Materials
  • Impact Tests
  • Laminates
  • Mechanical Properties
  • Metal Matrix Composites
  • Modulus Of Elasticity

Fields of Study

  • Materials science

Readers

  • Fluid Dynamics.
  • Materials Science (Mechanical Engineering).
  • Reinforced Composite Materials

Technology Areas

  • Space