Innovative Processing of Composites for Ultra-High Temperature Applications. Book 2

Abstract

The overall objective of this program is to develop intermetallic- matrix composites for structural application above 1200 deg C. The development of intermetallic-matrix composites is motivated by their inherent useful properties such as excellent oxidation resistance, high melting points and relatively low densities. The main disadvantages of intermetallics are poor fracture toughness at ambient temperature and low creep resistance and strength at high temperatures. It is expected that their inherent advantages can be effectively utilized via artificial compositing. The approaches used are to improve fracture toughness via ductile phase toughening, and to increase the creep resistance and strength via high strength ceramic reinforcements such as SiC whiskers. Two classes of alloys have been selected for investigation: (1) molybdenum disilicide (MoSl2, and (2) Nb-based aluminides with the major focus on NbAl3.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1993
Accession Number
ADA275598

Entities

People

  • Reza Abbaschian

Organizations

  • University of Florida

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Chemical Synthesis
  • Chemistry
  • Composite Materials
  • Creep
  • Crystal Structure
  • Failure Mode And Effect Analysis
  • Material Degradation Processes
  • Materials
  • Materials Engineering
  • Materials Processing
  • Materials Science
  • Materials Testing
  • Mechanical Properties
  • Mechanical Working
  • Mechanics
  • Modulus Of Elasticity
  • Stress Strain Relations

Fields of Study

  • Materials science

Readers

  • Powder metallurgy of Titanium alloys.
  • Systems Analysis and Design