The Lithium Concentration Dependence of Creep in Binary Aluminum-Lithium Alloys

Abstract

An investigation was conducted into the concentration dependence of creep of binary Aluminum-Lithium alloys. Constant true-stress creep and constant extension-rate stress-strain tests were conducted at temperatures ranging from 250 C to 500 C. Optical microscopy demonstrated that subgrains formed during deformation and that the predominant physical processes in the creep of Aluminum-Lithium alloys appears to be dislocation climb, with Lithium providing strengthening by its effect on the modulus or the stacking fault energy. Keywords: Aluminum alloys, Grain structures metallurgy, Theses.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1989
Accession Number
ADA218706

Entities

People

  • David W Taylor

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Advanced Materials
  • Alloys
  • Diffusion Coefficient
  • Dislocations
  • Energy
  • Engineering
  • Fabrication
  • Heat Of Activation
  • Lithium Alloys
  • Materials
  • Materials Science
  • Microscopy
  • Microstructure
  • Modulus Of Elasticity
  • Phase Diagrams
  • Solid Solutions
  • Temperature Gradients

Fields of Study

  • Materials science

Readers

  • Materials Science (Mechanical Engineering).
  • Materials Science and Engineering.