Microstructural Control of a Precipitate-Hardenable Al-Ag Alloy Using Severe Plastic Deformation

Abstract

An Al-10.8wt%Ag alloy was subjected to aging treatment followed by Equal-Channel Angular Pressing (ECAP) (designated process AE) or ECAP followed by aging treatment (designated process EA). Hardness measurements were undertaken with respect to the number of ECAP passes for process AE or with respect to aging time for process EA. Microstructures were examined by transmission electron microscopy (TEM) including X-ray mapping. It is shown that age hardening is observed for the ECAP sample due to the precipitation of very fine particles within the small grains.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 2004
Accession Number
ADP018188

Entities

People

  • Keiichiro Oh-ishi
  • Kenji Kaneko
  • Kunihiro Ohashi
  • Takeshi Fujita
  • Zenji Horita

Organizations

  • Kyushu University

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Advanced Materials
  • Age Hardening
  • Alloys
  • Electron Microscopy
  • Engineering
  • Grain Size
  • Hardening
  • Hardness
  • Materials
  • Materials Engineering
  • Materials Science
  • Mechanical Engineering
  • Microscopy
  • Microstructure
  • Phase Control
  • Precipitation
  • Transmission Electron Microscopy

Fields of Study

  • Materials science

Readers

  • Naval Mine Countermeasure Systems Development.
  • Powder metallurgy of Titanium alloys.

Technology Areas

  • Microelectronics