A look in the corrosion of aluminum alloy friction stir welds

C. S. Paglia, R. G. Buchheit

Research output: Contribution to journalArticlepeer-review

104 Scopus citations

Abstract

Aluminum alloy friction stir welds exhibit corrosion susceptibility, where sensitization of the microstructure occurs. The response of the microstructure to the welding is intense, and intergranular corrosion, mainly located along the nugget's heat-affected region, is promoted by coarsening of the grain boundary precipitates. Short-term post-weld heat treatments, with temperatures similar to the welding temperatures, modify the microstructure and reduce the corrosion. An increase in the corrosion resistance may also be reached by modifying the microchemistry during welding.

Original languageEnglish
Pages (from-to)383-387
Number of pages5
JournalScripta Materialia
Volume58
Issue number5
DOIs
StatePublished - Mar 2008

Bibliographical note

Funding Information:
The authors would like to thank Dr. K.V. Jata from AFRL, Dayton, OH, for financial support.

Keywords

  • Aluminum alloys
  • Corrosion
  • Friction stir welding

ASJC Scopus subject areas

  • Materials Science (all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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