Matrix and Interface Deformation in High Temperature Intermetallic Compounds and Composites.

Abstract

This project is concerned with the experimental and theoretical study of deformation and fracture mechanisms in MoSi(2) and TiAl alloy materials and of interfaces between these alloys. Past work has included (1) identifying dominant deformation mechanisms in MoSi2, (2) predicting the geometric hardening for suggested slip systems in MoSi2, and (3) finite element simulations of the deformation in intermetallic compounds (TiAl, MoSi2) pertaining to the microstructural subtleties in polycrystalline aggregates. More recent work has been concerned with the modeling of lamella microstructures in Ti3Al/TiAl and TiAl alloys. In particular, the framework has been created to perform detailed modeling of deformation processing in TiAl alloys. jg p1

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Document Details

Document Type
Technical Report
Publication Date
Apr 10, 1995
Accession Number
ADA305788

Entities

People

  • R. J. Asaro

Organizations

  • University of California, San Diego

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms

DTIC Thesaurus Topics

  • Chemistry
  • Crystal Lattices
  • Crystals
  • Experimental Data
  • Failure Mode And Effect Analysis
  • Grain Boundaries
  • High Temperature
  • Intermetallic Compounds
  • Materials
  • Mechanical Properties
  • Mechanics
  • Phase Diagrams
  • Single Crystals
  • Strain Rate
  • Stress Strain Relations
  • Stresses
  • Tensile Properties

Fields of Study

  • Materials science

Readers

  • Computational Fluid Dynamics (CFD)
  • Naval Architecture and Marine Engineering.
  • Powder metallurgy of Titanium alloys.