Fundamentals of Interfacial Strength in Composite Materials

Abstract

The current research period has emphasized 6061 and 7090 aluminum alloys as composite matrices, both with particulates SiC reinforcements. As in our previous work, we have found the fracture behavior to be sensitive to both process variables (in this case, different consolidation methods by the two material producers) and to metallurgical variables (in this case, degree of aging). In particular, overaging these materials lead to precipitation at the interface between the matrix and the SiC, which in turn appears to encourage initiation and growth of microvoids at those interfaces, leading to enhanced ductile fracture.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Nov 16, 1987
Accession Number
ADA198626

Entities

People

  • A. Voelkel
  • A. W. Thompson
  • I. M. Bernstein

Organizations

  • Carnegie Mellon University

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Air Force
  • Aluminum Alloys
  • Composite Materials
  • Crystal Structure
  • Electron Microscopy
  • Elements
  • Materials
  • Materials Engineering
  • Materials Science
  • Metal Matrix Composites
  • Particle Size
  • Particles
  • Particulates
  • Precipitation
  • Scientific Research
  • Transmission Electron Microscopy
  • Universities

Fields of Study

  • Materials science

Readers

  • Materials Science (Mechanical Engineering).
  • Powder metallurgy of Titanium alloys.