The Design of Metallic Composites Made From Nickel Aluminide.

Abstract

The overall objective of this project was to design the microstructure and to test the fracture toughness and creep-rupture properties of metal-matrix composites constructed from NiAl and aluminum oxide. The goal has been to obtain a composite that not only has excellent high temperature creep properties, but also has good fracture toughness at room temperature. Principal microstructural variables have been (i) the crystallographic texture in the metallic phase, (ii) the bonding of the metal-ceramic interface, and (iii) the degree of interpenetration (percolation) of the phases, particularly the metal phase. The latter is greatly affected by the volume fraction of the ceramic phase, the metal ligament size constrained between the ceramic particles, and the grain size of the intermetallic phase.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1997
Accession Number
ADA331628

Entities

People

  • S. L. Phoenix

Organizations

  • Cornell University

Tags

DTIC Thesaurus Topics

  • Aluminides
  • Aluminum Oxides
  • Applied Mechanics
  • Composite Materials
  • Elements
  • Grain Size
  • High Temperature
  • Materials
  • Materials Science
  • Mechanical Properties
  • Mechanics
  • Metal Matrix Composites
  • Metals
  • Nickel
  • Nickel Aluminide
  • Particles
  • Toughness

Fields of Study

  • Materials science

Readers

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