Effect of Thermal Treatment on the Mechanical and Toughness Properties of Extruded Sic sub w/Aluminum 6061 Metal Matrix Composite.

Abstract

Mechanical, instrumented Charpy V-notch (CVN) energy and plane strain fracture toughness properties of SiC whisker reinforced 6061 aluminum metal matrix composite material from an extruded tube have been determined. The effect of thermal treatment and orientation have been studied. The mechanical strength properties are higher than wrought Al 6061 in the T6 condition. CVN energy values, however, were reduced by an order of magnitude Kic fracture toughness of the as-received, T6 and degassed + T6 thermal treatments were 50% of the wrought Al 6061 alloy. The effect of orientation showed that the orientation with the least amount of SiC whisker in the crack plane (i.e., greatest mean free path between reinforcements) yields the highest toughness value. Keywords: Mechanical strength properties, Thermal treatments, Charpy V-Notch, Toughness behaviors.

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Document Details

Document Type
Technical Report
Publication Date
Jan 31, 1987
Accession Number
ADA193207

Entities

People

  • C. R. Crowe
  • D. F. Hasson
  • S. M. Hoover

Organizations

  • Naval Ordnance Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aluminum
  • Boundaries
  • Calorific Value
  • Chemical Analysis
  • Classification
  • Composite Materials
  • Ductility
  • Grain Boundaries
  • Materials
  • Mechanical Properties
  • Mechanical Working
  • Mechanics
  • Metal Matrix Composites
  • Metals
  • Particles
  • Silicon Carbide
  • Tensile Stress

Fields of Study

  • Materials science

Readers

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