Overcoming the strength-ductility trade-off in additive manufactured AlSi10Mg plates by friction stir welding at a low rotational speed
The main problem in post-treatment of laser powder bed fusion (L-PBF) AlSi10Mg is the sharp reduction in strength when the ductility enhances, i.e. the problem of strength-ductility trade-off. Friction stir welding (FSW) at a low rotational speed of 200 rpm was employed to join AlSi10Mg plate produc...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-05-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423005719 |
| _version_ | 1797798813645144064 |
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| author | Akbar Heidarzadeh Rasoul Khajeh Reza Jabraeili Hamid Reza Jafarian Mohamed Ahmed Nokeun Park Unhae Lee |
| author_facet | Akbar Heidarzadeh Rasoul Khajeh Reza Jabraeili Hamid Reza Jafarian Mohamed Ahmed Nokeun Park Unhae Lee |
| author_sort | Akbar Heidarzadeh |
| collection | DOAJ |
| description | The main problem in post-treatment of laser powder bed fusion (L-PBF) AlSi10Mg is the sharp reduction in strength when the ductility enhances, i.e. the problem of strength-ductility trade-off. Friction stir welding (FSW) at a low rotational speed of 200 rpm was employed to join AlSi10Mg plate produced by laser-powder bed fusion in conjunction with overcoming the strength-ductility trade-off. The microstructure, texture, and mechanical properties of the as-built and friction stir welded samples were examined. FSW resulted in the elimination of porosities, formation of ultrafine-grains with an average grain size of 0.7 μm, increment in dislocation density and Taylor factor, and fragmentation of Si particles. In addition, after FSW, B/B¯ and C shear texture components were mainly formed in the center of the stir zone, while at the shoulder-dominated zone the A1∗(111)[1¯1¯2] and A2∗(111)[112¯] components might be formed. The main grain structure formation mechanism was continuous dynamic recrystallization occurring by a gradual increase in misorientation of low angle grain boundaries and geometrically dynamic recrystallization. Consequently, tensile elongation was enhanced by ≈173%, while a negligible decrease in strength (≈9%) was observed. During tensile loading, the joint was fractured from the stir zone by the initiation of cracks from the surface of the sample, resulting in a bimodal dimple structure. |
| first_indexed | 2024-03-13T04:10:33Z |
| format | Article |
| id | doaj.art-9b8e3b11c6cc4b02a38f6239281bb967 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-13T04:10:33Z |
| publishDate | 2023-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-9b8e3b11c6cc4b02a38f6239281bb9672023-06-21T06:55:54ZengElsevierJournal of Materials Research and Technology2238-78542023-05-012418971909Overcoming the strength-ductility trade-off in additive manufactured AlSi10Mg plates by friction stir welding at a low rotational speedAkbar Heidarzadeh0Rasoul Khajeh1Reza Jabraeili2Hamid Reza Jafarian3Mohamed Ahmed4Nokeun Park5Unhae Lee6Department of Materials Engineering, Azarbaijan Shahid Madani University, Tabriz, Iran; Corresponding author.School of Metallurgy & Materials Engineering, Iran University of Science and Technology, Tehran, IranSchool of Metallurgy & Materials Engineering, Iran University of Science and Technology, Tehran, IranSchool of Metallurgy & Materials Engineering, Iran University of Science and Technology, Tehran, IranDepartment of Mechanical Engineering, College of Engineering at Al Kharj, Prince Sattam Bin Abdulaziz University, Al Kharj 11942, Saudi ArabiaSchool of Materials Science and Engineering, Youngman University, Gyeongsan 38541, Republic of KoreaBISTEP Evaluation & Analysis of Regional Innovation Program Division, Busan 48058, Republic of KoreaThe main problem in post-treatment of laser powder bed fusion (L-PBF) AlSi10Mg is the sharp reduction in strength when the ductility enhances, i.e. the problem of strength-ductility trade-off. Friction stir welding (FSW) at a low rotational speed of 200 rpm was employed to join AlSi10Mg plate produced by laser-powder bed fusion in conjunction with overcoming the strength-ductility trade-off. The microstructure, texture, and mechanical properties of the as-built and friction stir welded samples were examined. FSW resulted in the elimination of porosities, formation of ultrafine-grains with an average grain size of 0.7 μm, increment in dislocation density and Taylor factor, and fragmentation of Si particles. In addition, after FSW, B/B¯ and C shear texture components were mainly formed in the center of the stir zone, while at the shoulder-dominated zone the A1∗(111)[1¯1¯2] and A2∗(111)[112¯] components might be formed. The main grain structure formation mechanism was continuous dynamic recrystallization occurring by a gradual increase in misorientation of low angle grain boundaries and geometrically dynamic recrystallization. Consequently, tensile elongation was enhanced by ≈173%, while a negligible decrease in strength (≈9%) was observed. During tensile loading, the joint was fractured from the stir zone by the initiation of cracks from the surface of the sample, resulting in a bimodal dimple structure.http://www.sciencedirect.com/science/article/pii/S2238785423005719AlSi10MgLaser-powder bed fusionFriction stir weldingStrength-ductility trade-off |
| spellingShingle | Akbar Heidarzadeh Rasoul Khajeh Reza Jabraeili Hamid Reza Jafarian Mohamed Ahmed Nokeun Park Unhae Lee Overcoming the strength-ductility trade-off in additive manufactured AlSi10Mg plates by friction stir welding at a low rotational speed Journal of Materials Research and Technology AlSi10Mg Laser-powder bed fusion Friction stir welding Strength-ductility trade-off |
| title | Overcoming the strength-ductility trade-off in additive manufactured AlSi10Mg plates by friction stir welding at a low rotational speed |
| title_full | Overcoming the strength-ductility trade-off in additive manufactured AlSi10Mg plates by friction stir welding at a low rotational speed |
| title_fullStr | Overcoming the strength-ductility trade-off in additive manufactured AlSi10Mg plates by friction stir welding at a low rotational speed |
| title_full_unstemmed | Overcoming the strength-ductility trade-off in additive manufactured AlSi10Mg plates by friction stir welding at a low rotational speed |
| title_short | Overcoming the strength-ductility trade-off in additive manufactured AlSi10Mg plates by friction stir welding at a low rotational speed |
| title_sort | overcoming the strength ductility trade off in additive manufactured alsi10mg plates by friction stir welding at a low rotational speed |
| topic | AlSi10Mg Laser-powder bed fusion Friction stir welding Strength-ductility trade-off |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423005719 |
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