Optimization of Welding Condition for Nonlinear Friction Stir Welding

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  • Takahara Hironori
    Department of Materials Science, Graduate School of Engineering, Osaka Prefecture University
  • Tsujikawa Masato
    Department of Materials Science, Graduate School of Engineering, Osaka Prefecture University
  • Chung Sung Wook
    Division of Technology Licensing Organization Osaka Prefecture
  • Okawa Yuzo
    Technical Research Institute of Osaka Prefecture
  • Higashi Kenji
    Department of Materials Science, Graduate School of Engineering, Osaka Prefecture University
  • Oki Sachio
    Department of Mechanical Engineering, School of Science and Engineering, Kinki University

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Abstract

The influence of nonlinear friction stir welding (FSW) tool control on joint properties was investigated. Although FSW is widely applied to linear joints, it is impossible for five-axis FSW machines to maintain all FSW parameters in optimum conditions during nonlinear welding. Nonlinear FSW joints should be produced according to an order of priority for FSW parameters. Tensile test results of butt joints with rectangular change in the welding direction on the plate plane (L-shape butt joints) change with various welding parameters. Results show that a turn to the retreating side is encouraged when the welding direction changes. The method of zero inclination tool angles is effective for nonlinear and plane welding.

Journal

  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 49 (6), 1359-1364, 2008

    The Japan Institute of Metals and Materials

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