EBSD Study on Two Modes of Metal Flow Transfer in Friction Stir Weldment
| Autor: | D. Sunilkumar, S. Muthukumaran, K. T. Thilagham |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Materials science 0211 other engineering and technologies 02 engineering and technology Welding 01 natural sciences law.invention Taguchi methods Metal flow Tilt (optics) law 0103 physical sciences Metallic materials Composite material Severe plastic deformation Orthogonal array 021102 mining & metallurgy Electron backscatter diffraction |
| Zdroj: | Transactions of the Indian Institute of Metals. 74:331-339 |
| ISSN: | 0975-1645 0972-2815 |
| DOI: | 10.1007/s12666-020-02126-0 |
| Popis: | In this study, the metal flow phenomenon of friction-stir-welded AA6082-T6 and AA2014-T6 alloys is studied in detail and correlated with hardness measurement. The FSW process was carried out with optimized process parameters obtained from Taguchi’s method L9 orthogonal array of tool rpm (1200 rpm), welding speed (70 mm/min) and tilt angle of 2°. Cross-sectional view of dissimilar weldment interestingly showed the two modes of metal flow phenomenon within the weld matrix. EBSD analysis revealed that the weld matrixes of first mode region had almost equal fractions of LAGBs and HAGBs, whereas the second mode region had the lower fractions of LAGBs compared to HAGBs, which was due to the severe plastic deformation associated with tool shoulder. |
| Databáze: | OpenAIRE |
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