AMBROSIO, Danilo; ALDANONDO, Egoitz; WAGNER, Vincent; DESSEIN, Gilles; GARNIER, Christian; VIVAS, Javier; CAHUC, Olivier

doi:10.1080/13621718.2022.2065106

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Science and Technology of Welding and Joining. 2022, vol. 27, n° 7

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Process parameters and base material thermal properties strongly affect peak temperature evolution in friction stir welding (FSW). This work develops a semi-empirical model for peak temperature estimation during FSW of aluminium alloys. Several bead-on-plate runs were conducted on AA5083-H111, AA6082-T6 and AA7075-T6. Different rotational and welding speeds were tested while measuring the temperature with a thermocouple embedded in the tool. A polynomial model was proposed with the model's coefficients strongly correlating to the material thermal properties. Additionally, a threshold peak temperature was defined to avoid cold defects by combining temperature measurements with joint quality information obtained from X-ray scans. The efficiency of the model and the defined threshold are proven by applying them to the literature.< Réduire

Mots clés en anglais

Friction stir welding

peak temperature

aluminium alloys

empirical modl

weld quality

heat generation sensitivity

cold defects

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A semi-empirical model for peak temperature estimation in friction stir welding of aluminium alloys

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