Abstract
In this study, Al7039 plates at certain dimensions were first joined via friction stir welding (FSW) method at room temperature. During this process, thermocouple tips positioned closely to the each side of the weld helped determine temperatures on the advancing and retreating sides. These temperature values were used to estimate pre-heating temperature of the base metal prior to the welding process. After Al7039 plates at identical dimensions were heated to a certain temperature, they were joined using the same welding parameters, and the heat distribution was determined thanks to the thermocouples positioned on the same zones. The heat distribution between two samples which were joined using different heat inputs were analyzed to reveal the impact of this heat distribution on the weld zone via mechanical tests and micro structure images.
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