Effect of Two-Stage Aging on Microstructure of 7075 Aluminum Alloys

Abstract

Differential scanning calorimetry (DSC) and transmission electron microscopy (TEM) were used to establish the microstructural effects of various multistage aging treatments on aluminum alloy 7075. DSC was used to characterize the matrix microstructure while TEM was used to characterize the grain boundary precipitates. The aging treatments were in five categories: isochronal pre- aging, isothermal pre-aging, final again at 150 C , commercial type two-stage aging treatments, and retrogression and re-aging (RRA) treatments.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1981
Accession Number
ADA100466

Entities

People

  • John M. Papazian

Organizations

  • Grumman

Tags

Communities of Interest

  • Air Platforms
  • Space

DTIC Thesaurus Topics

  • Aircrafts
  • Aluminum Alloys
  • Corrosion
  • Corrosion Resistance
  • Electrical Conductivity
  • Electron Microscopy
  • Hardness
  • Heat Treatment
  • High Temperature
  • Low Temperature
  • Materials
  • Materials Science
  • Mechanical Properties
  • Microscopy
  • Precipitation
  • Stress Corrosion
  • Transmission Electron Microscopy

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Powder metallurgy of Titanium alloys.

Technology Areas

  • Microelectronics