Refill Friction Stir Spot Welding of an Al-Li Alloy: The Effects of Rotating Speed and Welding Time on Joint Microstructure and Mechanical Properties
In this work, 2060 Al-Li alloy was joined by refill friction stir spot welding (RFSSW). The effects of the tool’s rotating speed and welding time on the microstructure and mechanical properties of the welded joints were studied. The results showed that joints without defects can be obtained within a...
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MDPI AG
2024-12-01
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| Online Access: | https://www.mdpi.com/2075-4701/14/12/1383 |
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| author | Yuanbiao Cui Binbin Wang Wenzhe Dong Zhengwei Li Jiuchun Yan |
| author_facet | Yuanbiao Cui Binbin Wang Wenzhe Dong Zhengwei Li Jiuchun Yan |
| author_sort | Yuanbiao Cui |
| collection | DOAJ |
| description | In this work, 2060 Al-Li alloy was joined by refill friction stir spot welding (RFSSW). The effects of the tool’s rotating speed and welding time on the microstructure and mechanical properties of the welded joints were studied. The results showed that joints without defects can be obtained within a wide range of welding parameters. Tiny voids were formed when using a low rotating speed of 1600 rpm, and incomplete refilling was obtained when using a short welding time of 1 s. Increasing the rotating speed from 1600 to 2000 rpm increased the grain size of the stir zone (SZ). When using a short welding time of 1 s, the grains of the SZ were not completely broken with high orientation differences in the grains. Higher hardness was obtained in the SZ when using a lower rotating speed and shorter welding time. Increasing the rotating speed increased the joint strength, while short and long welding times decreased the joint strength. |
| format | Article |
| id | doaj-art-54bd23097fa24874b5a39326e5bb10fa |
| institution | DOAJ |
| issn | 2075-4701 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj-art-54bd23097fa24874b5a39326e5bb10fa2025-08-20T02:43:49ZengMDPI AGMetals2075-47012024-12-011412138310.3390/met14121383Refill Friction Stir Spot Welding of an Al-Li Alloy: The Effects of Rotating Speed and Welding Time on Joint Microstructure and Mechanical PropertiesYuanbiao Cui0Binbin Wang1Wenzhe Dong2Zhengwei Li3Jiuchun Yan4School of Mechatronics Engineering, Harbin Vocational & Technical College, Harbin 150081, ChinaSchool of Mechatronics Engineering, Harbin Vocational & Technical College, Harbin 150081, ChinaSchool of Mechatronics Engineering, Harbin Vocational & Technical College, Harbin 150081, ChinaState Key Laboratory of Precision Welding & Joining of Materials and Structures, Harbin Institute of Technology, Harbin 150001, ChinaState Key Laboratory of Precision Welding & Joining of Materials and Structures, Harbin Institute of Technology, Harbin 150001, ChinaIn this work, 2060 Al-Li alloy was joined by refill friction stir spot welding (RFSSW). The effects of the tool’s rotating speed and welding time on the microstructure and mechanical properties of the welded joints were studied. The results showed that joints without defects can be obtained within a wide range of welding parameters. Tiny voids were formed when using a low rotating speed of 1600 rpm, and incomplete refilling was obtained when using a short welding time of 1 s. Increasing the rotating speed from 1600 to 2000 rpm increased the grain size of the stir zone (SZ). When using a short welding time of 1 s, the grains of the SZ were not completely broken with high orientation differences in the grains. Higher hardness was obtained in the SZ when using a lower rotating speed and shorter welding time. Increasing the rotating speed increased the joint strength, while short and long welding times decreased the joint strength.https://www.mdpi.com/2075-4701/14/12/1383refill friction stir spot welding2060 Al-Li alloytool rotating speedwelding timegrain sizehardness |
| spellingShingle | Yuanbiao Cui Binbin Wang Wenzhe Dong Zhengwei Li Jiuchun Yan Refill Friction Stir Spot Welding of an Al-Li Alloy: The Effects of Rotating Speed and Welding Time on Joint Microstructure and Mechanical Properties Metals refill friction stir spot welding 2060 Al-Li alloy tool rotating speed welding time grain size hardness |
| title | Refill Friction Stir Spot Welding of an Al-Li Alloy: The Effects of Rotating Speed and Welding Time on Joint Microstructure and Mechanical Properties |
| title_full | Refill Friction Stir Spot Welding of an Al-Li Alloy: The Effects of Rotating Speed and Welding Time on Joint Microstructure and Mechanical Properties |
| title_fullStr | Refill Friction Stir Spot Welding of an Al-Li Alloy: The Effects of Rotating Speed and Welding Time on Joint Microstructure and Mechanical Properties |
| title_full_unstemmed | Refill Friction Stir Spot Welding of an Al-Li Alloy: The Effects of Rotating Speed and Welding Time on Joint Microstructure and Mechanical Properties |
| title_short | Refill Friction Stir Spot Welding of an Al-Li Alloy: The Effects of Rotating Speed and Welding Time on Joint Microstructure and Mechanical Properties |
| title_sort | refill friction stir spot welding of an al li alloy the effects of rotating speed and welding time on joint microstructure and mechanical properties |
| topic | refill friction stir spot welding 2060 Al-Li alloy tool rotating speed welding time grain size hardness |
| url | https://www.mdpi.com/2075-4701/14/12/1383 |
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