Influence of tool rotational speed on microstructural characteristics and mechanical properties of friction stir processed AA5754 aluminium alloy under overlap configuration
Friction Stir Processing (FSP) is a variant of the Friction Stir Welding (FSW) technique. Recently, FSP has been extensively used to modify the microstructure of many low-temperature alloys and subsequently to enhance the mechanical properties. Dynamic recrystallization caused by the rotating tool i...
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IOP Publishing
2025-01-01
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| Series: | Materials Research Express |
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| Online Access: | https://doi.org/10.1088/2053-1591/adf1db |
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| author | Senthilnathan K K Thirumavalavan P Sivaraj |
| author_facet | Senthilnathan K K Thirumavalavan P Sivaraj |
| author_sort | Senthilnathan K |
| collection | DOAJ |
| description | Friction Stir Processing (FSP) is a variant of the Friction Stir Welding (FSW) technique. Recently, FSP has been extensively used to modify the microstructure of many low-temperature alloys and subsequently to enhance the mechanical properties. Dynamic recrystallization caused by the rotating tool is the main reason for modifying (refining) the microstructure in the stir zone. Since this process operates under solid-state conditions, it eliminates many solidification-related problems. In this research work, 6-mm-thick AA5754 aluminium alloy sheets were overlapped to attain a total thickness of 12 mm. A tapered-threaded HSS tool was then used to perform friction stir processing at the center of the overlapped plates using five different rotational speeds. The other parameters were kept constant. This investigation found that a tool’s rotational speed of 700 rpm yielded a defect-free FSP region, likely due to optimum heat generation under this condition. Moreover, the FSP material at 700 rpm exhibited a maximum tensile strength of 245 MPa. This is mainly due to the formation of finer grains and more refined strengthening precipitates in the FSP region. It is concluded that the tool’s rotational speed plays a vital role in heat generation and subsequently influences the microstructure and mechanical properties. |
| format | Article |
| id | doaj-art-a04f9436eb9140d488e895380cfd4fa3 |
| institution | DOAJ |
| issn | 2053-1591 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
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| series | Materials Research Express |
| spelling | doaj-art-a04f9436eb9140d488e895380cfd4fa32025-08-20T02:46:14ZengIOP PublishingMaterials Research Express2053-15912025-01-0112707651510.1088/2053-1591/adf1dbInfluence of tool rotational speed on microstructural characteristics and mechanical properties of friction stir processed AA5754 aluminium alloy under overlap configurationSenthilnathan K0https://orcid.org/0009-0009-5949-2488K Thirumavalavan1https://orcid.org/0000-0003-0739-4981P Sivaraj2https://orcid.org/0000-0002-3989-5484Department of Mechanical Engineering, College of Engineering, Guindy Anna University , Chennai, 600025, IndiaDepartment of Mechanical Engineering, College of Engineering, Guindy Anna University , Chennai, 600025, IndiaCentre for Materials Joining and Research, Department of Manufacturing Engineering, Annamalai University , Annamalai Nagar, Chidambaram, 608002, IndiaFriction Stir Processing (FSP) is a variant of the Friction Stir Welding (FSW) technique. Recently, FSP has been extensively used to modify the microstructure of many low-temperature alloys and subsequently to enhance the mechanical properties. Dynamic recrystallization caused by the rotating tool is the main reason for modifying (refining) the microstructure in the stir zone. Since this process operates under solid-state conditions, it eliminates many solidification-related problems. In this research work, 6-mm-thick AA5754 aluminium alloy sheets were overlapped to attain a total thickness of 12 mm. A tapered-threaded HSS tool was then used to perform friction stir processing at the center of the overlapped plates using five different rotational speeds. The other parameters were kept constant. This investigation found that a tool’s rotational speed of 700 rpm yielded a defect-free FSP region, likely due to optimum heat generation under this condition. Moreover, the FSP material at 700 rpm exhibited a maximum tensile strength of 245 MPa. This is mainly due to the formation of finer grains and more refined strengthening precipitates in the FSP region. It is concluded that the tool’s rotational speed plays a vital role in heat generation and subsequently influences the microstructure and mechanical properties.https://doi.org/10.1088/2053-1591/adf1dbfriction stir processingaluminium alloysAA5754 H11mechanical propertiesprecipitate strengthening |
| spellingShingle | Senthilnathan K K Thirumavalavan P Sivaraj Influence of tool rotational speed on microstructural characteristics and mechanical properties of friction stir processed AA5754 aluminium alloy under overlap configuration Materials Research Express friction stir processing aluminium alloys AA5754 H11 mechanical properties precipitate strengthening |
| title | Influence of tool rotational speed on microstructural characteristics and mechanical properties of friction stir processed AA5754 aluminium alloy under overlap configuration |
| title_full | Influence of tool rotational speed on microstructural characteristics and mechanical properties of friction stir processed AA5754 aluminium alloy under overlap configuration |
| title_fullStr | Influence of tool rotational speed on microstructural characteristics and mechanical properties of friction stir processed AA5754 aluminium alloy under overlap configuration |
| title_full_unstemmed | Influence of tool rotational speed on microstructural characteristics and mechanical properties of friction stir processed AA5754 aluminium alloy under overlap configuration |
| title_short | Influence of tool rotational speed on microstructural characteristics and mechanical properties of friction stir processed AA5754 aluminium alloy under overlap configuration |
| title_sort | influence of tool rotational speed on microstructural characteristics and mechanical properties of friction stir processed aa5754 aluminium alloy under overlap configuration |
| topic | friction stir processing aluminium alloys AA5754 H11 mechanical properties precipitate strengthening |
| url | https://doi.org/10.1088/2053-1591/adf1db |
| work_keys_str_mv | AT senthilnathank influenceoftoolrotationalspeedonmicrostructuralcharacteristicsandmechanicalpropertiesoffrictionstirprocessedaa5754aluminiumalloyunderoverlapconfiguration AT kthirumavalavan influenceoftoolrotationalspeedonmicrostructuralcharacteristicsandmechanicalpropertiesoffrictionstirprocessedaa5754aluminiumalloyunderoverlapconfiguration AT psivaraj influenceoftoolrotationalspeedonmicrostructuralcharacteristicsandmechanicalpropertiesoffrictionstirprocessedaa5754aluminiumalloyunderoverlapconfiguration |