The Deformation Characteristics and Microstructural Dynamics of an AL- 10MG-0.1ZR Alloy

Abstract

An investigation into microstructural evolution during processing and superplastic deformation of an Al-10Mg-0.1Zr alloy was conducted. Processing schedules were modified to enhance particle-stimulated nucleation of recrystallization and refine subsequent gain size. Strain rates varying over three orders of magnitude were utilized in subsequent testing of processed material. At lower strain rates of about 10-4 sec-1 coarsening of the microstructure was apparent and elongations of 277% were obtained. A strain rate of 10-3 sec-1 resulted in lesser coarsening and elongations of 650%. A model of deformation by grain boundary sliding in association with microstructural coarsening is presented.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1992
Accession Number
ADA257738

Entities

People

  • James F. Buckley Ii

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Air Platforms
  • Space

DTIC Thesaurus Topics

  • Alloys
  • Aluminum Alloys
  • Electron Microscopy
  • Equations
  • Geometry
  • Grain Boundaries
  • Grain Size
  • Magnesium Alloys
  • Manufacturing
  • Materials
  • Materials Science
  • Mechanical Engineering
  • Mechanical Working
  • Microscopy
  • Particle Size
  • Scanning Electron Microscopy
  • Stress Strain Relations

Fields of Study

  • Materials science

Readers

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