STRESS-CORROSION CRACKING OF COPPER-GOLD SINGLE CRYSTALS

Abstract

The stress-corrosion susceptibility range of the copper-gold system was measured, using single crystals loaded to give 5% glide strain in 2% ferric chloride. Alloys containing less than about 10 at.% gold fail by the progressive reduction of cross section due to general corrosive attack. Alloys containing between 10 and 29 at.% gold fail by stress corrosion, with the stress-corrosion susceptibility steadily increasing up to 29 at.% gold. Those alloys containing in excess of this gold content are not susceptible to stress-corrosion. The stress corrosion behavior of Cu3Au is independent of structure (short-range- order, long-range-order, or domain size) and therefore independent of effects related to structure (yield points, slip line clusters, etc.). The results are discussed in relation to current theories of stress-corrosion, and it is concluded that these are inadequate to account for the observations.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1943
Accession Number
AD0421517

Entities

People

  • J. Hardwick
  • R. A. Dodd

Organizations

  • University of Wisconsin–Madison

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Alloys
  • Chemistry
  • Chlorides
  • Corrosion
  • Crystal Lattices
  • Crystals
  • Embrittlement
  • Heat Treatment
  • Materials
  • Mechanical Properties
  • Metallurgy
  • Metals
  • Polycrystals
  • Single Crystals
  • Stress Corrosion
  • Stress Corrosion Cracking
  • Yield Strength

Readers

  • Materials Science and Engineering.