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Thermal energy generation and distribution in friction stir welding of aluminum alloys

Author

Listed:
  • Su, H.
  • Wu, C.S.
  • Pittner, A.
  • Rethmeier, M.

Abstract

The accurate prediction of the thermal energy generation and distribution in friction stir welding process is of great significance for the optimization of the process parameters and the understanding of the underlying mechanisms. In this study, a new method of integrative calculation and measurement is proposed to obtain the more reasonable values of the frictional coefficient and the slip rate, which are both used to characterize the heat generation rate at the tool-workpiece contact interfaces. A three-dimensional model is established to fully couple the energy generation, heat transfer and material flow in friction stir welding of aluminum alloys. The energy produced by both interfacial friction and plastic deformation are taken into consideration. The analysis accuracy of the thermal energy generation and distribution is improved, and the distribution features of thermal energy density in the vicinity of the tool are elucidated. The predicted peak temperature values at some locations are in agreement with the experimentally measured ones.

Suggested Citation

  • Su, H. & Wu, C.S. & Pittner, A. & Rethmeier, M., 2014. "Thermal energy generation and distribution in friction stir welding of aluminum alloys," Energy, Elsevier, vol. 77(C), pages 720-731.
    • Handle: RePEc:eee:energy:v:77:y:2014:i:c:p:720-731
    DOI: 10.1016/j.energy.2014.09.045
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    References listed on IDEAS

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    1. Lee, Chin-Hyung & Chang, Kyong-Ho, 2013. "Failure pressure of a pressurized girth-welded super duplex stainless steel pipe in reverse osmosis desalination plants," Energy, Elsevier, vol. 61(C), pages 565-574.
    2. Jiang, Wenchun & Fan, Qinshan & Gong, Jianming, 2010. "Optimization of welding joint between tower and bottom flange based on residual stress considerations in a wind turbine," Energy, Elsevier, vol. 35(1), pages 461-467.
    3. Li, Yan & Feng, Yanhui & Zhang, Xinxin & Wu, Chuansong, 2014. "Energy propagation in plasma arc welding with keyhole tracking," Energy, Elsevier, vol. 64(C), pages 1044-1056.
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    Cited by:

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