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Macro-sections from friction stir welds in 25 mm 7075-T6 aluminumAluminum were analyzed to study possible relationships between unit-area quantities (such as average flow stress, lateral pressure, shoulder pressure, heat flux, and energy density), basic forces, and the internal structure of the welds. Various features of the sections were examined, including stir zone size and shape, distortion of the grain structure outside of the stir zone, and the presence of volumetric defects. This analysis was part of a continuing program to develop unit-area analysis as a means of gaining additional insight into the welding process with possible implications for machine learningMachine learning and advanced welding controls.

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Analysis of FSW Macro-sections in Aluminum Relative to Unit-Area Analysis

  • 会议论文

  • 发表日期：

    2025年

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  • Kevin Colligan

摘要

Macro-sections from friction stir welds in 25 mm 7075-T6 aluminumAluminum were analyzed to study possible relationships between unit-area quantities (such as average flow stress, lateral pressure, shoulder pressure, heat flux, and energy density), basic forces, and the internal structure of the welds. Various features of the sections were examined, including stir zone size and shape, distortion of the grain structure outside of the stir zone, and the presence of volumetric defects. This analysis was part of a continuing program to develop unit-area analysis as a means of gaining additional insight into the welding process with possible implications for machine learningMachine learning and advanced welding controls.