Powder-Based Work at Edwards AFB

Abstract

Areas of interest are bulk nanophase aluminum parts for aerospace and astronautics applications and metallic coatings for microtubecomponents. Nanocrystalline materials are defined as polycrystalline materials with crystallites that have manometer rather than micron dimensions. In contrast to conventional course-grained materials, the number of atoms in the grain boundaries can equal or exceed those in the crystal lattice sites. They are materials with superior properties which include: increased strength (for aluminum it increases from 29 ksi to 115 ksi) while maintaining ductility (5%).

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Document Details

Document Type
Technical Report
Publication Date
Apr 29, 2004
Accession Number
ADA422888

Entities

People

  • Wesley P. Hoffman

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Abstracts
  • Air Force
  • Air Force Research Laboratories
  • Aluminum
  • Astronautics
  • Boundaries
  • Composite Materials
  • Crystal Lattices
  • Crystallites
  • Crystals
  • Fatigue Life
  • Grain Boundaries
  • Hydrogen Embrittlement
  • Information Operations
  • Materials
  • Military Research
  • Supersonic Aircraft

Fields of Study

  • Materials science

Readers

  • Materials Science (Mechanical Engineering).
  • Nanocomposite Materials Science
  • Thin Film Deposition Science.

Technology Areas

  • Space