Accession Number:

ADP005939

Title:

Short Fibre and Particulate Reinforced Metal Matrix Composites,

Descriptive Note:

Corporate Author:

NOTTINGHAM UNIV (UNITED KINGDOM)

Personal Author(s):

Report Date:

1989-08-01

Pagination or Media Count:

13.0

Abstract:

Short fibres, whiskers or particles of ceramic materials, e.g. silicon carbide and alumina, when dispersed in a more or less random manner in a metallic matrix can promote increases in stiffness and strength at ambient and elevated temperatures without imposing a weight penalty. The paper considers the available routes for the fabrication of such composites, e.g. by squeeze casting, spray forming, powder technologies and hot working etc. Influences of type and amount of reinforcement, matrix alloy selection and processing route on strength, creep and fatigue resistance are discussed. Comparisons are made with conventional metals and alloys, and polymers and metals reinforced with continuous fibres. Attention is drawn to the behaviour of these materials under compressive loading as well as to their thermal expansion and conductivity. The majority of the matrices considered are aluminium-based. Keywords Alloys, Great Britain, Particulate reinforced metal matrix composites, Liquid metal technology, Solid state methods. JG

Subject Categories:

  • Properties of Metals and Alloys
  • Laminates and Composite Materials

Distribution Statement:

APPROVED FOR PUBLIC RELEASE