Microstructure and Crystallographic Texture Characterization of Friction Stir Welded Thin AA2024 Aluminum Alloy
Friction stir welding (FSW) is a promising technique to join aluminum alloys without having problems encountered during fusion welding processes. In the present work, the evolution of microstructure and texture in friction stir welded thin AA2024 aluminum alloy are examined by electron backscattered...
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| Format: | Article |
| Language: | English |
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Iran University of Science & Technology
2018-03-01
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| Series: | Iranian Journal of Materials Science and Engineering |
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| Online Access: | http://ijmse.iust.ac.ir/browse.php?a_code=A-10-1548-2&slc_lang=en&sid=1 |
| _version_ | 1828861169925881856 |
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| author | M. Alvand M. Naseri E. Borhani H. Abdollah-Pour |
| author_facet | M. Alvand M. Naseri E. Borhani H. Abdollah-Pour |
| author_sort | M. Alvand |
| collection | DOAJ |
| description | Friction stir welding (FSW) is a promising technique to join aluminum alloys without having problems encountered during fusion welding processes. In the present work, the evolution of microstructure and texture in friction stir welded thin AA2024 aluminum alloy are examined by electron backscattered diffraction (EBSD) technique. The sheets with 0.8 mm thickness were successfully welded by friction stir welding at the tool rotational speeds of 500, 750, and 1000 rpm with a constant traverse speed of 160 mm/min. EBSD revealed that stir zones exhibited equiaxed recrystallized grains and the grain size increased with increasing the tool rotation rate. The fraction of high angle grain boundaries and mean misorientation angle of the boundaries in the FSW joints at 500 rpm were 63.6% and 24.96°, respectively, which were higher than those of the sample welded at 1000 rpm (53.6% and 17.37°). Crystallographic texture results indicated that the Cube {001}<100> and S {123}<634> textures in base metal gradually transformed in to Copper {112}<111> shear texture. It was found that with increasing the tool rotation rate, the intensity of Cube {001}<100>, Y {111}<112>, S {123}<634>, and Dillamore {4 4 11}<11 11 8> texture orientations increased and the intensity of Brass {011}<211> texture orientation decreased. |
| first_indexed | 2024-12-13T02:53:41Z |
| format | Article |
| id | doaj.art-643e6db8eaf54100a59dc48992e3f43e |
| institution | Directory Open Access Journal |
| issn | 1735-0808 2383-3882 |
| language | English |
| last_indexed | 2024-12-13T02:53:41Z |
| publishDate | 2018-03-01 |
| publisher | Iran University of Science & Technology |
| record_format | Article |
| series | Iranian Journal of Materials Science and Engineering |
| spelling | doaj.art-643e6db8eaf54100a59dc48992e3f43e2022-12-22T00:01:59ZengIran University of Science & TechnologyIranian Journal of Materials Science and Engineering1735-08082383-38822018-03-011515363Microstructure and Crystallographic Texture Characterization of Friction Stir Welded Thin AA2024 Aluminum AlloyM. Alvand0M. Naseri1E. Borhani2H. Abdollah-Pour3 Faculty of Materials and Metallurgical Engineering, Semnan University, Semnan, Iran Department of Materials Science and Engineering, Faculty of Engineering, Shahid Chamran University of Ahvaz, Ahvaz, Iran Department of Nano Technology, Nano Materials Group, Semnan University, Semnan, Iran Faculty of Materials and Metallurgical Engineering, Semnan University, Semnan, Iran Friction stir welding (FSW) is a promising technique to join aluminum alloys without having problems encountered during fusion welding processes. In the present work, the evolution of microstructure and texture in friction stir welded thin AA2024 aluminum alloy are examined by electron backscattered diffraction (EBSD) technique. The sheets with 0.8 mm thickness were successfully welded by friction stir welding at the tool rotational speeds of 500, 750, and 1000 rpm with a constant traverse speed of 160 mm/min. EBSD revealed that stir zones exhibited equiaxed recrystallized grains and the grain size increased with increasing the tool rotation rate. The fraction of high angle grain boundaries and mean misorientation angle of the boundaries in the FSW joints at 500 rpm were 63.6% and 24.96°, respectively, which were higher than those of the sample welded at 1000 rpm (53.6% and 17.37°). Crystallographic texture results indicated that the Cube {001}<100> and S {123}<634> textures in base metal gradually transformed in to Copper {112}<111> shear texture. It was found that with increasing the tool rotation rate, the intensity of Cube {001}<100>, Y {111}<112>, S {123}<634>, and Dillamore {4 4 11}<11 11 8> texture orientations increased and the intensity of Brass {011}<211> texture orientation decreased. http://ijmse.iust.ac.ir/browse.php?a_code=A-10-1548-2&slc_lang=en&sid=1Aluminum alloy Friction stir welding Electron backscatter diffraction Microstructure Crystallographic texture |
| spellingShingle | M. Alvand M. Naseri E. Borhani H. Abdollah-Pour Microstructure and Crystallographic Texture Characterization of Friction Stir Welded Thin AA2024 Aluminum Alloy Iranian Journal of Materials Science and Engineering Aluminum alloy Friction stir welding Electron backscatter diffraction Microstructure Crystallographic texture |
| title | Microstructure and Crystallographic Texture Characterization of Friction Stir Welded Thin AA2024 Aluminum Alloy |
| title_full | Microstructure and Crystallographic Texture Characterization of Friction Stir Welded Thin AA2024 Aluminum Alloy |
| title_fullStr | Microstructure and Crystallographic Texture Characterization of Friction Stir Welded Thin AA2024 Aluminum Alloy |
| title_full_unstemmed | Microstructure and Crystallographic Texture Characterization of Friction Stir Welded Thin AA2024 Aluminum Alloy |
| title_short | Microstructure and Crystallographic Texture Characterization of Friction Stir Welded Thin AA2024 Aluminum Alloy |
| title_sort | microstructure and crystallographic texture characterization of friction stir welded thin aa2024 aluminum alloy |
| topic | Aluminum alloy Friction stir welding Electron backscatter diffraction Microstructure Crystallographic texture |
| url | http://ijmse.iust.ac.ir/browse.php?a_code=A-10-1548-2&slc_lang=en&sid=1 |
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