Friction Stir Welding Operating Window for Aluminum Alloy Obtained by Temperature Measurement
Résumé
Finding the process parameters (advancing and rotational speed) in FSW is the key to construct an operating window based on a type of material and a tool geometry. Literature shows different process methods carried out by researchers and engineers to obtain the data needed to select suitable parameters. These methods can be divided into “destructive”, based on macrostructures analyses, and “non-destructive” with temperature measurement. This article describes a continuous temperature measurement method of the nugget zone using a thermocouple embedded in the tool for aluminum alloy. The results show that the FSW window obtained by temperature measurement is wider than the one obtained by analyzing the macrostructures. It is then possible to quickly acquire the technological window of operating parameters adapted to the tool-material couple. The aim of this study is to reduce time of the welding process, number of trials, cost and guarantee a good quality.
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