Localized corrosion and stress corrosion cracking of friction stir welded 7075 and 7050

R. G. Buchheit, C. S. Paglia

Research output: Contribution to conferencePaperpeer-review

4 Scopus citations

Abstract

The localized corrosion and stress corrosion cracking of high strength aluminum alloys 7075-T651 and 7050-T7451 friction stir welds were examined in the weld transverse and longitudinal orientation using conventional electrochemical measurements, corrosion immersion tests and constant extension rate testing. The weld zones in both alloys were found to be more susceptible to corrosion compared to the unaffected parent materials. The heat affected zones of the weld were found to be the most susceptible to corrosion and stress corrosion cracking for 7075-T651, while in 7050-T7451, the TMAZ-nugget boundary exhibited the greatest corrosion susceptibility. In constant extension rate tests, 7075-T651 friction stir welds generally exhibited better cracking resistance than 7050-T7451 welds, even though the 7075-T651 the parent metal exhibited a lower resistance than the parent 7050-T7451.

Original languageEnglish
Pages94-103
Number of pages10
StatePublished - 2003
EventCorrosion and Protection of Light Metal Alloys - Proceedings of the International Symposium - Orlando, FL., United States
Duration: Oct 12 2003Oct 17 2003

Conference

ConferenceCorrosion and Protection of Light Metal Alloys - Proceedings of the International Symposium
Country/TerritoryUnited States
CityOrlando, FL.
Period10/12/0310/17/03

Keywords

  • Corrosion susceptibility
  • Friction stir welds
  • High strength aluminum alloys

ASJC Scopus subject areas

  • Engineering (all)

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