Nanostructuring of Aluminum Alloy Powders by Cryogenic Attrition with Hydrogen-Free Process Control Agent

Abstract

Aluminum 5083 powder was milled through cryogenic attrition for 8, 16, and 24 h with graphite as a hydrogen-free process control agent. The powders were degassed to remove moisture and other impurities. The degassed powders have a relatively low hydrogen concentration. The morphology, grain sizes, and stability of the milled powders were compared, and it was found that while there was little difference in grain size between the 3 milling times, powders milled for 16 and 24 h showed more grain stability than powders milled for 8 h.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 2015
Accession Number
ADA613745

Entities

People

  • Anit K. Giri
  • Clara Hofmeister
  • Frank Kellogg
  • Kyu C. Cho

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Weapons Technologies

DTIC Thesaurus Topics

  • Alloys
  • Aluminum
  • Aluminum Alloys
  • Chemical Analysis
  • Chemical Compounds
  • Chemistry
  • Composite Materials
  • Electron Microscopy
  • Fatty Acids
  • Grain Size
  • Graphitic Materials
  • Materials
  • Materials Engineering
  • Materials Processing
  • Materials Science
  • Mechanical Properties
  • Metals

Fields of Study

  • Materials science

Readers

  • Metallurgy
  • Polymer Science and Technology
  • Rocket Propulsion.

Technology Areas

  • Microelectronics