Tensile strength and metallurgical analysis in anodized Al/Cu joint using friction stir welding

Pei Lun Ting, Chi Ying Tsai, Liu Ho Chiu, Chin Pao Cheng

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

Abstract

Tensile strength, metallographic and structural analyses of anodized aluminum sheet-copper sheet dissimilar welds produced under various friction stir welding (FSW) conditions were conducted. The 6061 specimens were heated to 530∼570 °C, held for 1 hour, followed by water quenching and furnace cooling. AA 6061-T6 Al sheets were anodized to thicknesses of 5μm and 12μm, respectively. FSW joints were characterized using microstructural analysis, microhardness measurements and tensile testing. The tensile strength of the 6061-T6/6061-T6 joint using FSW is 145 MPa. However, the tensile strength of the 6061-T6/Cu joint using FSW is decreased to 100 MPa. When the anodized layer was increased the tensile strength of the 6061-T6/Cu joint using FSW was decreased to a value below 50 MPa. Increasing the anodized layer thickness disturbed material mixing and the formation of increasing amounts of oxide rich structures. The oxide phase content and the mixed area homogeneity were increased with increasing layer thickness, decreasing the tensile strength of the FSW joints.

Original languageEnglish
Title of host publicationRecent Development in Machining, Materials and Mechanical Technologies
EditorsJyh-Chen Chen, Usuki Hiroshi, Sheng-Wei Lee, Yiin-Kuen Fuh
PublisherTrans Tech Publications Ltd
Pages490-495
Number of pages6
ISBN (Print)9783038354956
DOIs
Publication statusPublished - 2015 Jan 1
EventInternational Conference on Machining, Materials and Mechanical Technologies, IC3MT 2014 - Taipei City, Taiwan
Duration: 2014 Aug 312014 Sep 5

Publication series

NameKey Engineering Materials
Volume656-657
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Other

OtherInternational Conference on Machining, Materials and Mechanical Technologies, IC3MT 2014
CountryTaiwan
CityTaipei City
Period14/8/3114/9/5

Keywords

  • Aluminum
  • Anodizing
  • Copper
  • Friction stir welding

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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