Effect of Temperature and Strain Rate on Microstructure of a Deformed, Superplastic Al-10%Mg-0.1%Zr Alloy.

Abstract

Development of microstructure during thermomechanical processing of an Al-10%Mg-O,1%Zr alloy was examined in the initial portion of this research. The thermomechanical processing involved solution treating; not working by upset forging at 440 C followed by warm rolling material were deformed at three strain rates at temperatures of 200 C, 300 C, and 400 C and were microstructurally examined. It is found that this alloy statically recrystallizes prior to commencing a test at 400 C, the resultant grains deform by boundary sliding and there is extensive cavitation. During lower temperature deformation it was found that either continuous recrystallization or just with no recrystallization occurs and little or no cavitation takes place.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1985
Accession Number
ADA159015

Entities

People

  • D. B. Berthold

Organizations

  • Naval Postgraduate School

Tags

DTIC Thesaurus Topics

  • Alloys
  • Aluminum Alloys
  • Creep
  • Grain Boundaries
  • Grain Growth
  • Grain Size
  • Heat Of Activation
  • Magnesium Alloys
  • Materials
  • Materials Science
  • Mechanical Properties
  • Mechanical Working
  • Phase Diagrams
  • Precipitation
  • Solid Solutions
  • Strain Rate
  • Tensile Testing

Fields of Study

  • Materials science

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Powder metallurgy of Titanium alloys.