Influence of Friction-Stir-Processing Parameters on the Microstructure and Local Mechanical Properties of an Aluminium-6% Magnesium-H18 Alloy
One major challenge of friction stir processing (FSP) is its sensitivity to parameters like advancing and rotational speeds. This study examined the effect of tool travel speed on the microstructural evolution and mechanical properties of a new-generation Al-6Mg alloy. Optical and electron microscop...
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MDPI AG
2025-06-01
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| author | Samir Mourad Chentouf Philippe Grandmont Mohammad Saadati Nora Amimer Mohammad Jahazi |
| author_facet | Samir Mourad Chentouf Philippe Grandmont Mohammad Saadati Nora Amimer Mohammad Jahazi |
| author_sort | Samir Mourad Chentouf |
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| description | One major challenge of friction stir processing (FSP) is its sensitivity to parameters like advancing and rotational speeds. This study examined the effect of tool travel speed on the microstructural evolution and mechanical properties of a new-generation Al-6Mg alloy. Optical and electron microscopy, EBSD, and shear-punch testing (SPT) were used. Two travel speeds, 50 and 120 mm/min, revealed significant differences in microstructure and properties at ambient temperature. EBSD provided misorientation maps and boundary fraction data. Microstructure analysis showed continuous dynamic recrystallization in the nugget zone, with finer grains observed at the higher speed. Microhardness was greater on both sides at 120 mm/min. The TMAZ showed elongated grains at 120 mm/min, while recrystallized grains were more prominent at 50 mm/min. In the HAZ, partial recrystallization occurred at 120 mm/min, whereas extensive recrystallization was observed at 50 mm/min. The SPT results indicated variations in stiffness between advancing and retreating sides, especially 2 mm from the nugget center. At 10 and 20 mm from the center, higher stiffness and strength were recorded at 120 mm/min. This study established correlations between joint stiffness, grain misorientation, and travel speed. |
| format | Article |
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| institution | Kabale University |
| issn | 2075-4701 |
| language | English |
| publishDate | 2025-06-01 |
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| series | Metals |
| spelling | doaj-art-3a376da6d52340019e87b80e32c75e962025-08-20T03:58:30ZengMDPI AGMetals2075-47012025-06-0115770910.3390/met15070709Influence of Friction-Stir-Processing Parameters on the Microstructure and Local Mechanical Properties of an Aluminium-6% Magnesium-H18 AlloySamir Mourad Chentouf0Philippe Grandmont1Mohammad Saadati2Nora Amimer3Mohammad Jahazi4Department of Mechanical Engineering, École de Technologie Supérieure, 1100 rue Notre-Dame Ouest, Montréal, QC H3C1K3, CanadaDepartment of Mechanical Engineering, École de Technologie Supérieure, 1100 rue Notre-Dame Ouest, Montréal, QC H3C1K3, CanadaDepartment of Mechanical Engineering, École de Technologie Supérieure, 1100 rue Notre-Dame Ouest, Montréal, QC H3C1K3, CanadaDepartment of Mathematics and Industrial Engineering, Polytechnic of Montreal, 2500 Chemin de Polytechnique, Montréal, QC H3T0A3, CanadaDepartment of Mechanical Engineering, École de Technologie Supérieure, 1100 rue Notre-Dame Ouest, Montréal, QC H3C1K3, CanadaOne major challenge of friction stir processing (FSP) is its sensitivity to parameters like advancing and rotational speeds. This study examined the effect of tool travel speed on the microstructural evolution and mechanical properties of a new-generation Al-6Mg alloy. Optical and electron microscopy, EBSD, and shear-punch testing (SPT) were used. Two travel speeds, 50 and 120 mm/min, revealed significant differences in microstructure and properties at ambient temperature. EBSD provided misorientation maps and boundary fraction data. Microstructure analysis showed continuous dynamic recrystallization in the nugget zone, with finer grains observed at the higher speed. Microhardness was greater on both sides at 120 mm/min. The TMAZ showed elongated grains at 120 mm/min, while recrystallized grains were more prominent at 50 mm/min. In the HAZ, partial recrystallization occurred at 120 mm/min, whereas extensive recrystallization was observed at 50 mm/min. The SPT results indicated variations in stiffness between advancing and retreating sides, especially 2 mm from the nugget center. At 10 and 20 mm from the center, higher stiffness and strength were recorded at 120 mm/min. This study established correlations between joint stiffness, grain misorientation, and travel speed.https://www.mdpi.com/2075-4701/15/7/709friction stir processing (FSP)shear-punch testing (SPT)electron backscatter diffraction (EBSD)microstructurerecrystallizationmicrohardness |
| spellingShingle | Samir Mourad Chentouf Philippe Grandmont Mohammad Saadati Nora Amimer Mohammad Jahazi Influence of Friction-Stir-Processing Parameters on the Microstructure and Local Mechanical Properties of an Aluminium-6% Magnesium-H18 Alloy Metals friction stir processing (FSP) shear-punch testing (SPT) electron backscatter diffraction (EBSD) microstructure recrystallization microhardness |
| title | Influence of Friction-Stir-Processing Parameters on the Microstructure and Local Mechanical Properties of an Aluminium-6% Magnesium-H18 Alloy |
| title_full | Influence of Friction-Stir-Processing Parameters on the Microstructure and Local Mechanical Properties of an Aluminium-6% Magnesium-H18 Alloy |
| title_fullStr | Influence of Friction-Stir-Processing Parameters on the Microstructure and Local Mechanical Properties of an Aluminium-6% Magnesium-H18 Alloy |
| title_full_unstemmed | Influence of Friction-Stir-Processing Parameters on the Microstructure and Local Mechanical Properties of an Aluminium-6% Magnesium-H18 Alloy |
| title_short | Influence of Friction-Stir-Processing Parameters on the Microstructure and Local Mechanical Properties of an Aluminium-6% Magnesium-H18 Alloy |
| title_sort | influence of friction stir processing parameters on the microstructure and local mechanical properties of an aluminium 6 magnesium h18 alloy |
| topic | friction stir processing (FSP) shear-punch testing (SPT) electron backscatter diffraction (EBSD) microstructure recrystallization microhardness |
| url | https://www.mdpi.com/2075-4701/15/7/709 |
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