COMPARISON OF STRESS-CORROSION RESISTANCE OF BARE X2020-T6 SHEET AND BARE 7075-T6 SHEET

Abstract

End supported, centrally loaded, 0.063 in. x 1 in. x 9 in. beams of X 20 and 7075-T6 aluminum alloy sheet, held in an insulated clamping fixture were stressed to 80% of their ten tensile yield strength and exposed to salt spray atmosphere for 250 hours. At the end of the salt spray exposure no stress corrosion cracking was observed either in the X2020-T6 or 70 5-T6 alloy. During the salt spray corrosion exposure the X2020-T6 alloy pitted severely at the frequency of three to six 1/8 in. diameter by 1/16" deep pits per square inch. The 7075-T6 material did not pit as a result of salt spray corrosion exposure.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Dec 16, 1958
Accession Number
AD0292284

Entities

People

  • E. C. Turner
  • H. H. Stier
  • P. W. Bergstedt

Organizations

  • General Dynamics

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Alloys
  • Aluminum
  • Aluminum Alloys
  • Bending Stress
  • Corrosion
  • Corrosion Resistance
  • Materials
  • Materials Testing
  • Resistance
  • Stress Corrosion
  • Stress Corrosion Cracking
  • Stresses
  • Test Methods
  • Yield Strength

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Metallurgy
  • Polymer Science and Engineering.

Technology Areas

  • Microelectronics