Tensile properties of a friction stir processed Al-Cu 2218 alloy at elevated temperatures and related microstructural characteristics

Ssu Ta Chen, Truan-Sheng Lui, Li Hui Chen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Tensile tests of as extruded (F) and as friction stir processed (FFSP) Al-Cu 2218 alloy are conducted at elevated temperatures from room temperature to 450°C, respectively. From room temperature to 300°C, F samples perform a higher tensile flow stress than FFSP samples, and this is resulted from an effect of natural aging. On the other hand, the stable FFSP microstructures promote grain boundary sliding to occur and corresponds to higher strain hardening exponents. The remarkable increasing in tensile elongation of AF at 450°C is ascribed mainly to the occurrence of grain boundary sliding.

Original languageEnglish
Title of host publicationTMS 2010 - 139th Annual Meeting and Exhibition - Supplemental Proceedings
Pages129-138
Number of pages10
Publication statusPublished - 2010 May 21
EventTMS 2010 - 139th Annual Meeting and Exhibition - Seattle, WA, United States
Duration: 2010 Feb 142010 Feb 18

Publication series

NameTMS Annual Meeting
Volume1

Other

OtherTMS 2010 - 139th Annual Meeting and Exhibition
CountryUnited States
CitySeattle, WA
Period10-02-1410-02-18

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

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