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Analysis of Flow and Temperature Distribution During Friction Stir Welding

[+] Author Affiliations
Shigeki Hirasawa

Hitachi, Ltd., Tsuchiura, Ibaraki, Japan

Mitsuaki Haneda, Satoshi Hirano

Hitachi, Ltd., Hitachi, Ibaraki, Japan

Toshio Tomimura

Kyushu University, Kasuga, Fukuoka, Japan

Paper No. HT-FED2004-56303, pp. 929-934; 6 pages
doi:10.1115/HT-FED2004-56303
From:
  • ASME 2004 Heat Transfer/Fluids Engineering Summer Conference
  • Volume 3
  • Charlotte, North Carolina, USA, July 11–15, 2004
  • Conference Sponsors: Heat Transfer Division and Fluids Engineering Division
  • ISBN: 0-7918-4692-X | eISBN: 0-7918-3740-8
  • Copyright © 2004 by ASME

abstract

Friction Stir Welding (FSW) is a new metal-joining process and the temperature distribution during the FSW process was numerically investigated by changing such parameters as rotation speed, the thermal conductivity of the materials to be joined, the location of the tool, and the generating heat. Results indicate that the temperature on the advancing side is higher than that on retreating side. This can be reduced by heating the upstream portion of the retreating side. The mixing of materials was investigated numerically by assuming materials to be many particles connected with springs. The particles near the pin and the shoulder on the advancing side are mixed well. When the temperature is low in the plastic flow region and plastic deformation force is strong, void defects are found behind the advancing side. These results agree with experimental results.

Copyright © 2004 by ASME

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