Abstract
Friction Stir processing (FSP) has evolved recently as an energy efficient and green processing technique for enhancing the formability and mechanical properties of some metals. Managing the heat generation during FSP is critical; sufficient heat is needed to soften the material but without melting, which allows for dynamic recrystallization of the grains by the stirring action. Effective cooling was found to improve the resulting microstructure by removing the excess heat that promotes grain growth. In this paper three dimensional models were developed to simulate FSP with in-process cooling from the backing plate using computational fluid dynamics. Various cooling channel geometries, coolants and flow rates are simulated to study their effects on the temperature history, flow stresses, predicted grain size and hardness distributions, where the coolant type was found to have the most significant effect among the different cooling aspects.
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Albakri, A.N., Aljoaba, S.Z., Khraisheh, M.K. (2011). Modelling of Friction Stir Processing with in Process Cooling Using Computational Fluid Dynamics Analysis. In: Seliger, G., Khraisheh, M., Jawahir, I. (eds) Advances in Sustainable Manufacturing. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-20183-7_15
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DOI: https://doi.org/10.1007/978-3-642-20183-7_15
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