Abstract
The effect of stationary shoulder friction stir welding (SSFSW) on temperature gradient and material flow was investigated to optimize the SSFSW process. A three-dimensional numerical model of heat generation and material flow was established by using computational fluid dynamics, and thermo-physical phenomena of SSFSWed Ti-6Al-4V were quantitatively analyzed in terms of heat generation, heat transfer, material flow and viscosity. The temperature gradient was more uniform in a narrow stir zone produced by the SSFSW process. The distribution of velocity was studied, and instantaneous velocity center of tool was divided into two different velocity regions to study the material flow. The simulation results were verified by experimental thermal cycles of calculated position of model, which was in accordance with the experimental results.
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This work was funded by the National Natural Science Foundation of China (Grant No. 51604015).
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**aoqing, J., Wang, J., Tao, Y. et al. Numerical simulation of the stationary shoulder friction stir welding of Ti-6Al-4V. J Mater Sci 57, 7367–7383 (2022). https://doi.org/10.1007/s10853-022-07116-9
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DOI: https://doi.org/10.1007/s10853-022-07116-9