Thermal Efficiency and Material Properties of Friction Stir Channelling Applied to Aluminium Alloy AA5083
The Friction Stir Channelling (FSC) is a novel advanced solution for producing internal closed channels along any desired path with a constant or continuously modified shape along the path in a single manufacturing step. The channels are formed by continuous extraction of part of the stirred process...
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| Format: | Article |
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MDPI AG
2019-04-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/12/8/1549 |
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| author | Heikki Karvinen Afshin Hasani Aleni Pauli Salminen Tatiana Minav Pedro Vilaça |
| author_facet | Heikki Karvinen Afshin Hasani Aleni Pauli Salminen Tatiana Minav Pedro Vilaça |
| author_sort | Heikki Karvinen |
| collection | DOAJ |
| description | The Friction Stir Channelling (FSC) is a novel advanced solution for producing internal closed channels along any desired path with a constant or continuously modified shape along the path in a single manufacturing step. The channels are formed by continuous extraction of part of the stirred processed material into external flash. In this work, the performance of channels with the same shape and dimensions but produced by FSC and milling respectively, are compared using an experimental calorimeter setup with a focus on the influence of the geometrical features of the channels on the thermal efficiency. The investigation is implemented in a plate of AA5083-H111, with a thickness of 10 mm. The material properties of the channels produced by FSC are investigated with a microhardness field and optical microscopic analysis, assessing the thermomechanically processed and heat affected zones. The mechanical resistance of the channels produced by FSC is evaluated with an application of internal pressure up to 380 bar. The results show that the FSC enhanced the heat transfer by about 45 % compared with smoother milled channels. The optical microscopy shows evidence of a good consolidation of the solid state joining mechanisms activated during the FSC, with a small reduction of the hardness around the channel in the stirred zone and heat affected zone, being assisted by a harder top region at the ceiling of the channel. |
| first_indexed | 2024-04-13T09:21:57Z |
| format | Article |
| id | doaj.art-40cb7f27087d4e6c863bbec878025aca |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-13T09:21:57Z |
| publishDate | 2019-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-40cb7f27087d4e6c863bbec878025aca2022-12-22T02:52:33ZengMDPI AGEnergies1996-10732019-04-01128154910.3390/en12081549en12081549Thermal Efficiency and Material Properties of Friction Stir Channelling Applied to Aluminium Alloy AA5083Heikki Karvinen0Afshin Hasani Aleni1Pauli Salminen2Tatiana Minav3Pedro Vilaça4Department of Mechanical Engineering, School of Engineering, Aalto University, 02150 Espoo, FinlandDepartment of Mechanical Engineering, School of Engineering, Aalto University, 02150 Espoo, FinlandDepartment of Mechanical Engineering, School of Engineering, Aalto University, 02150 Espoo, FinlandDepartment of Mechanical Engineering, School of Engineering, Aalto University, 02150 Espoo, FinlandDepartment of Mechanical Engineering, School of Engineering, Aalto University, 02150 Espoo, FinlandThe Friction Stir Channelling (FSC) is a novel advanced solution for producing internal closed channels along any desired path with a constant or continuously modified shape along the path in a single manufacturing step. The channels are formed by continuous extraction of part of the stirred processed material into external flash. In this work, the performance of channels with the same shape and dimensions but produced by FSC and milling respectively, are compared using an experimental calorimeter setup with a focus on the influence of the geometrical features of the channels on the thermal efficiency. The investigation is implemented in a plate of AA5083-H111, with a thickness of 10 mm. The material properties of the channels produced by FSC are investigated with a microhardness field and optical microscopic analysis, assessing the thermomechanically processed and heat affected zones. The mechanical resistance of the channels produced by FSC is evaluated with an application of internal pressure up to 380 bar. The results show that the FSC enhanced the heat transfer by about 45 % compared with smoother milled channels. The optical microscopy shows evidence of a good consolidation of the solid state joining mechanisms activated during the FSC, with a small reduction of the hardness around the channel in the stirred zone and heat affected zone, being assisted by a harder top region at the ceiling of the channel.https://www.mdpi.com/1996-1073/12/8/1549Friction stir channellingcooling platethermal efficiencymicrostructuremicrohardnessinternal pressureAA5083thermal management |
| spellingShingle | Heikki Karvinen Afshin Hasani Aleni Pauli Salminen Tatiana Minav Pedro Vilaça Thermal Efficiency and Material Properties of Friction Stir Channelling Applied to Aluminium Alloy AA5083 Energies Friction stir channelling cooling plate thermal efficiency microstructure microhardness internal pressure AA5083 thermal management |
| title | Thermal Efficiency and Material Properties of Friction Stir Channelling Applied to Aluminium Alloy AA5083 |
| title_full | Thermal Efficiency and Material Properties of Friction Stir Channelling Applied to Aluminium Alloy AA5083 |
| title_fullStr | Thermal Efficiency and Material Properties of Friction Stir Channelling Applied to Aluminium Alloy AA5083 |
| title_full_unstemmed | Thermal Efficiency and Material Properties of Friction Stir Channelling Applied to Aluminium Alloy AA5083 |
| title_short | Thermal Efficiency and Material Properties of Friction Stir Channelling Applied to Aluminium Alloy AA5083 |
| title_sort | thermal efficiency and material properties of friction stir channelling applied to aluminium alloy aa5083 |
| topic | Friction stir channelling cooling plate thermal efficiency microstructure microhardness internal pressure AA5083 thermal management |
| url | https://www.mdpi.com/1996-1073/12/8/1549 |
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