Scientific journal
Scientific Review. Technical science
ISSN 2500-0799
ПИ №ФС77-57440

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RECOMMENDATIONS ON HEAT CONTROL METHODS OF JOINTS PRODUCED DURING FRICTION STIR WELDING

Levihina A.V. 1, 2 Rudenskiy G.E. 1, 2
1 Institute of Strength Physics and Materials Science of the Siberian Branch of the Russian Academy of Sciences
2 National Research Tomsk Polytechnic University
The results of the thermal control of the process of friction stir welding of aluminum alloys are analyzed. It was revealed that small internal defects found by the results of eddy current and ultrasonic testing , are not detected in the thermograms. It has been established that the region of local abnormal overheating aluminum alloy may be associated with the formation of voids in the process of plastic deformation and mechanical melting of the heated below the melting point of the metal. Based on the results of experiments There are some recommendations on thermal control of welded joints of aluminum alloys produced by friction stir welding, including guidelines for choosing the calibration and control samples, models of lenses and thermal placement on the machine. Implementation of this method is designed to determine the practicality of thermal control to assess the quality of FSW joint during welding.