A FUNDAMENTAL INVESTIGATION OF THE NATURE OF STRESS-CORROSION CRACKING IN ALUMINUM ALLOYS

Abstract

Several experimental techniques are used to study the mechanisms of stress-corrosion cracking in high purity aluminum alloys. The effect of metallurgical variables such as alloying elements (Cr, Ag, Cu) and heat treatments on a 4.2Zn-3.3Mg aluminum alloy are determined. Techniques used in this study include electrode polarization, autoradiographic studies, microstress studies, electron microscopy (replica and transmission), metioscopy, and standard stress-corrosion testing methods. As a result of these studies, an electrochemical theory for the mechanism of stress-corrosion cracking which involves the strain induced absorption of hydrogen is found to be consistent with the observations.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1967
Accession Number
AD0811299

Entities

People

  • D. A. Vaughan
  • D. I. Phalen
  • F. H. Haynie
  • P. D. Frost
  • W. K. Boyd

Organizations

  • Battelle Memorial Institute

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Alloys
  • Cells
  • Chromium
  • Electrodes
  • Electron Emission
  • Grain Size
  • Hydrogen
  • Materials
  • Mechanical Working
  • Modulus Of Elasticity
  • Phase Studies
  • Photoexcitation
  • Protons
  • Stress Corrosion Cracking
  • Stress Strain Relations
  • Tensile Properties
  • Yield Strength

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.

Technology Areas

  • Microelectronics