Deformation and Fracture of Laminated Intermetallic Materials

Abstract

This project began with both an experimental effort to produce gamma-Ni(Al)/gamma'-Ni3Al multilayers and a modeling effort to understand the strength of such multilayers. The experimental work progressed to the point that, for the first time known to the investigators, gamma-Ni(Al)/gamma'-Ni3Al multilayers have been produced by magnetron sputtering. Samples with individual layer thicknesses ranging from 20nm/20nm to 120nm/120nm have been produced and two epitaxies, <001> and <111>, been achieved. With respect to modeling, results (see Fig. 28) show how the choice of layer thickness, volume fraction, and interfacial strength affect the strength of such materials. Peierls model of resistance of interfaces to slip transmission also was developed in an effort understand the principal role of atomic bonding properties and modulus mismatch across interface the strength of interfaces to transmission.

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Document Details

Document Type
Technical Report
Publication Date
Feb 29, 2000
Accession Number
ADA375227

Entities

People

  • H.L. Fraser
  • Peter M. Anderson

Organizations

  • Ohio State University

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Biomedical
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Alloys
  • Chemistry
  • Composite Materials
  • Diffraction
  • Engineering
  • Epitaxial Growth
  • Films
  • Geometry
  • Materials
  • Materials Engineering
  • Materials Science
  • Materials Testing
  • Mechanical Properties
  • Mechanics
  • Shear Stresses
  • Solid Solutions
  • Thin Films

Fields of Study

  • Physics

Readers

  • Materials Science and Engineering.
  • Mechanical Engineering/Mechanics of Materials.
  • Thin Film Deposition Science.