Processing and Properties of Mechanical Alloyed Al93Fe3Cr2Ti2 Alloys

Abstract

Nanostructured Al93Fe3Ti2Cr2 alloys were prepared via mechanical alloying (MA) starting from elemental powders, followed by extrusion to form bulk material. The microstructure and phase formation as a function of the milling time and the concentration of the process-control agent were investigated. The thermal stability of the mechanical alloyed powder was also studied. The bulk material extruded from the mechanical alloyed powder exhibited superior strength with good ductility at both ambient and elevated temperatures under compressive loading conditions. The enhanced strength at both ambient and elevated temperatures was attributed to the retention of ultrafine grains (fcc-Al < 100 nm), the formation of supersaturated solid solutions, and the presence of nanoscale intermetallic precipitates.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 2004
Accession Number
ADP018141

Entities

People

  • D. Miracle
  • Hao Luo
  • J. Villegas
  • Leslie M. Shaw

Organizations

  • University of Connecticut

Tags

DTIC Thesaurus Topics

  • Advanced Materials
  • Electron Microscopy
  • Engineered Materials
  • Fatty Acids
  • High Temperature
  • Materials
  • Materials Engineering
  • Materials Processing
  • Materials Science
  • Metallurgy
  • Mixtures
  • Particles
  • Phase Transformations
  • Solid Solutions
  • Stearic Acid
  • Tensile Properties
  • Tensile Strength

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Nanocomposite Materials Science

Technology Areas

  • Microelectronics