Effect of Processing Parameters on Strength and Corrosion Resistance of Friction Stir-Welded AA6082
The friction stir welding method is increasingly attracting interest in the railway sector due to its environmental friendliness, low cost, and ease of producing high-quality joints. Using aluminum alloys reduces the weight of structures, increasing their payload and reducing fuel consumption and ru...
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MDPI AG
2022-01-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/12/2/192 |
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| author | Aleksandra Laska Marek Szkodo Damian Koszelow Pasquale Cavaliere |
| author_facet | Aleksandra Laska Marek Szkodo Damian Koszelow Pasquale Cavaliere |
| author_sort | Aleksandra Laska |
| collection | DOAJ |
| description | The friction stir welding method is increasingly attracting interest in the railway sector due to its environmental friendliness, low cost, and ease of producing high-quality joints. Using aluminum alloys reduces the weight of structures, increasing their payload and reducing fuel consumption and running costs. The following paper presents studies on the microstructure, strength, and corrosion resistance of AA6082 aluminum alloy sheets joined via friction stir welding. The sheets were joined by employing two different traverse speeds (200 and 250 mm/min), two different rotational speeds (1000 and 1250 rpm), and two different tool tilt angles (0° and 2°). It was observed that the use of the inclined tool provides finer microstructure in the nugget zone, higher value of microhardness, and better corrosion resistance, compared to the tilt angle equal to 0°. By increasing the value of revolutionary pitch, finer grains are observed in the nugget zone and the measured hardness is higher. It was also observed that the change in process parameters strongly influences the radius of the nugget zone and the potentiodynamic properties of the friction stir-welded material. The joints produced with the tool tilt angle equal to 2°, the tool traverse speed of 200 mm/min, and its rotational speed of 1250 rpm revealed the highest hardness in the nugget zone (about 92% of the base material). Moreover, the finest grain size in the nugget with the average value of 9.8 ± 1.5 µm was found. The lowest corrosion current density equal to 16.029 µA cm<sup>−2</sup> was noted for the sample with the highest strength, which also provides its good corrosion resistance. |
| first_indexed | 2024-03-09T21:26:47Z |
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| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-09T21:26:47Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
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| series | Metals |
| spelling | doaj.art-9f89ac9e57ec4d268f3a8669c4b55c3c2023-11-23T21:06:24ZengMDPI AGMetals2075-47012022-01-0112219210.3390/met12020192Effect of Processing Parameters on Strength and Corrosion Resistance of Friction Stir-Welded AA6082Aleksandra Laska0Marek Szkodo1Damian Koszelow2Pasquale Cavaliere3Faculty of Mechanical Engineering and Ship Technology, Gdansk University of Technology, Narutowicza 11/12, 80-233 Gdansk, PolandFaculty of Mechanical Engineering and Ship Technology, Gdansk University of Technology, Narutowicza 11/12, 80-233 Gdansk, PolandFaculty of Electronics, Telecommunications and Informatics, Gdansk University of Technology, Narutowicza 11/12, 80-233 Gdansk, PolandDepartment of Innovation Engineering, University of Salento, Via per Arnesano, 73100 Lecce, ItalyThe friction stir welding method is increasingly attracting interest in the railway sector due to its environmental friendliness, low cost, and ease of producing high-quality joints. Using aluminum alloys reduces the weight of structures, increasing their payload and reducing fuel consumption and running costs. The following paper presents studies on the microstructure, strength, and corrosion resistance of AA6082 aluminum alloy sheets joined via friction stir welding. The sheets were joined by employing two different traverse speeds (200 and 250 mm/min), two different rotational speeds (1000 and 1250 rpm), and two different tool tilt angles (0° and 2°). It was observed that the use of the inclined tool provides finer microstructure in the nugget zone, higher value of microhardness, and better corrosion resistance, compared to the tilt angle equal to 0°. By increasing the value of revolutionary pitch, finer grains are observed in the nugget zone and the measured hardness is higher. It was also observed that the change in process parameters strongly influences the radius of the nugget zone and the potentiodynamic properties of the friction stir-welded material. The joints produced with the tool tilt angle equal to 2°, the tool traverse speed of 200 mm/min, and its rotational speed of 1250 rpm revealed the highest hardness in the nugget zone (about 92% of the base material). Moreover, the finest grain size in the nugget with the average value of 9.8 ± 1.5 µm was found. The lowest corrosion current density equal to 16.029 µA cm<sup>−2</sup> was noted for the sample with the highest strength, which also provides its good corrosion resistance.https://www.mdpi.com/2075-4701/12/2/192friction stir weldingaluminum alloymechanical propertiescorrosionpotentiodynamic behavior |
| spellingShingle | Aleksandra Laska Marek Szkodo Damian Koszelow Pasquale Cavaliere Effect of Processing Parameters on Strength and Corrosion Resistance of Friction Stir-Welded AA6082 Metals friction stir welding aluminum alloy mechanical properties corrosion potentiodynamic behavior |
| title | Effect of Processing Parameters on Strength and Corrosion Resistance of Friction Stir-Welded AA6082 |
| title_full | Effect of Processing Parameters on Strength and Corrosion Resistance of Friction Stir-Welded AA6082 |
| title_fullStr | Effect of Processing Parameters on Strength and Corrosion Resistance of Friction Stir-Welded AA6082 |
| title_full_unstemmed | Effect of Processing Parameters on Strength and Corrosion Resistance of Friction Stir-Welded AA6082 |
| title_short | Effect of Processing Parameters on Strength and Corrosion Resistance of Friction Stir-Welded AA6082 |
| title_sort | effect of processing parameters on strength and corrosion resistance of friction stir welded aa6082 |
| topic | friction stir welding aluminum alloy mechanical properties corrosion potentiodynamic behavior |
| url | https://www.mdpi.com/2075-4701/12/2/192 |
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