Structural Development of Micro-Structurally Toughened Metal Matrix Composites

Abstract

This study addressed the development of a new class of discontinuously reinforced metals that possess substantially improved damage tolerance relative to the currently available materials. The novelty is to allow specially designed toughening mechanisms to be operative in the composites. Technical effort of this study focused on developing a fundamental understanding of the toughening mechanisms at the micromechanics level, and identifying possible SDI structural components components that can be improved through the use of this material. This goal was achieved by the development of two microchemical material models. The first model addressed the stress-strain constitutive modeling, and the second model addressed the modeling of fracture toughness of the new composites. Keywords: Discontinuously reinforced metals, Microstructure toughening mechanisms, Silicon carbide/aluminum, Impact damage, Structural applications, Metal matrix composites.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1990
Accession Number
ADA226060

Entities

People

  • Edward C. Wung
  • Kent W. Buesking

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Energy and Power Technologies
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Composite Materials
  • Damage Tolerance
  • Hardening
  • Materials
  • Materials Science
  • Materials Testing
  • Mechanical Working
  • Mechanics
  • Metal Matrix Composites
  • Micromechanics
  • Plastic Deformation
  • Silicon Carbide
  • Stress Strain Relations
  • Stresses
  • Structural Components
  • Submarine Hulls
  • Tensile Strength

Fields of Study

  • Engineering
  • Materials science

Readers

  • Materials Science (Mechanical Engineering).
  • Reinforced Composite Materials
  • Systems Analysis and Design