Bending Fatigue of a Particulate SiC/Al 6061 Metal Matrix Composite.

Abstract

The bending fatigue behaviour of 20 volume percent SiC particulate reinforced Al 6061-T6 sheet was investigated. Improved mechanical properties and ductility in the material, as compared to past results and Al 6061-T6 sheet, provided higher fatigue resistance. Low cycle fatigue specimens failed immediately after crack initiation. High cycle fatigue specimens exhibited a coarse step morphology, but classic striations were not observed. The existence of crack propagation at lower stresses was not verified. Preliminary results suggest that the fatigue resistance of particulate SiC reinforced/Al6061 composite exhibits orientation dependence. Also particulate SiC reinforced/Al6061 composite has less fatigue resistance than whisker reinforced material. Improvement in surface finish also needs to be made over presently available material.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1983
Accession Number
ADA134108

Entities

People

  • C. R. Crowe
  • D. F. Hasson
  • J. R. Boorujy

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Aluminum
  • Aluminum Alloys
  • Composite Materials
  • Crack Propagation
  • Engineering
  • Materials
  • Materials Engineering
  • Materials Science
  • Mechanical Properties
  • Mechanical Working
  • Metal Matrix Composites
  • Orientation (Direction)
  • Silicon Carbide
  • Slope
  • Tensile Strength
  • United States
  • United States Naval Academy

Fields of Study

  • Materials science

Readers

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