Non destructive detection of flaws in FSW and their metallographic characterization
- Vugrin T. ,
- Staniek G. ,
- Hillger W. ,
- et al
- Vugrin T. ,
- Staniek G. ,
- Hillger W. and
- Dalle Donne C.
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Friction stir butt welds of Al alloy (2024, 6013 and 6056) sheets (4 mm thickness) were examined by conventional ultrasonic inspection with a single focused transducer (25 MHz frequency), facilitating the detection of void-like flaws as well as the root flaw (lack of penetration) with high sensitivity and resolution, and the results were compared with metallographic sections (examined by SEM and optical microscopy). The welds were produced using standard tool and welding parameters in 2024 T3, 6013 T4 and 6056 T4, the surfaces of which were treated by pronounced pre-oxidation before welding. Results obtained from ultrasonic D-scans (time of flight) and longitudinal and transversal B-scans are presented.
5th International Symposium, 14-16 Sep 2004, Session 3B: Non-Destructive Testing, Paper 01
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