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Microstructural and Mechanical Investigations of Friction Stir Welded TI/TI- And TI-Alloy/TI-Alloy-Joints

  • N. Buhl
  • G. Wagner
  • D. Eifler
  • M. Gutensohn
  • F. Zillekens

Abstract

Friction Stir Welding (FSW) is an efficient welding technique to join light-weight materials in ductile material condition. Especially for aerospace applications FSW of cp-titanium and Ti-alloys is of high scientific and technological interest. At the Institute of Materials Science and Engineering (WKK) friction stir welds of 1.2 mm thick cp-titanium and Ti6A14V sheets were produced. To analyze the microstructure of the welding zone in detail light- and scanning electron-microscopic investigations were carried out. By EBSD it was possible to describe the material flow in the welding zone. The mechanical properties were characterized by two dimensional micro-hardness measurements and strain controlled tensile tests. For welds with cp-titanium a yield point of 345 MPa and an ultimate tensile strength of 450 MPa were achieved.

Keywords

FSW of cp-Titanium and Ti6Al4V Microstructure Texture Mechanical Properties 

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Copyright information

© TMS (The Minerals, Metals & Materials Society) 2013

Authors and Affiliations

  • N. Buhl
    • 1
  • G. Wagner
    • 1
  • D. Eifler
    • 1
  • M. Gutensohn
    • 2
  • F. Zillekens
    • 2
  1. 1.Institute of Materials Science and Engineering (WKK)University of KaiserslauternKaiserslauternGermany
  2. 2.PFW Aerospace AGSpeyerGermany

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