Effects of casting speed on microstructural and tensile properties of Al–Mg–Si alloy fabricated by horizontal and vertical twin-roll casting
For the development of Al–Mg–Si strips with high mechanical performance via twin-roll casting (TRC) technology, it is necessary to understand through comparative analysis of traditional horizontal twin-roll casting (HTRC) and promising vertical twin-roll casting (VTRC) technologies. In this study, t...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-09-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S223878542302269X |
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| author | Yong Hee Jo Hae-Rim Moon Jae Wung Bae Jisung Yoo Seok Gyu Lee Yun-Soo Lee Hyoung-Wook Kim |
| author_facet | Yong Hee Jo Hae-Rim Moon Jae Wung Bae Jisung Yoo Seok Gyu Lee Yun-Soo Lee Hyoung-Wook Kim |
| author_sort | Yong Hee Jo |
| collection | DOAJ |
| description | For the development of Al–Mg–Si strips with high mechanical performance via twin-roll casting (TRC) technology, it is necessary to understand through comparative analysis of traditional horizontal twin-roll casting (HTRC) and promising vertical twin-roll casting (VTRC) technologies. In this study, two types of Al–Mg–Si alloys (denoted as H-alloy and V-alloy) were fabricated by HTRC and VTRC using different casting speeds (0.69 and 20 m/min, respectively). The microstructural evolution and mechanical properties of the two alloys were comprehensively assessed and compared. To reveal the microstructural characteristics, various techniques including energy-dispersive X-ray spectroscopy (EDS), electron backscatter diffraction (EBSD), texture calculation and differential scanning calorimetry (DSC) were utilized. Center segregation occurred in H-alloy and V-alloy in the form of channel segregation and segregation bands, respectively. Moreover, the texture components of H-alloy showed rolling and shear textures, indicating continuous casting with hot-rolling during HTRC; however, those of V-alloy showed a random texture, indicating the absence of hot-rolling during VTRC. Therefore, the amount of plastic deformation in H-alloy was greater than that in V-alloy, which increased the yield strength through dislocation strengthening. Furthermore, solid-solution strengthening and precipitation strengthening primarily helped improve the strength of V-alloy, whereas pre-existing voids caused premature fracture. Our comparative analysis of the microstructural evolution and tensile properties realized by HTRC and VTRC is anticipated to broaden the understanding of twin-roll-cast strips. |
| first_indexed | 2024-03-11T15:05:00Z |
| format | Article |
| id | doaj.art-adf601be5a134488bc87f6aad091ef50 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-11T15:05:00Z |
| publishDate | 2023-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-adf601be5a134488bc87f6aad091ef502023-10-30T06:04:45ZengElsevierJournal of Materials Research and Technology2238-78542023-09-012680108024Effects of casting speed on microstructural and tensile properties of Al–Mg–Si alloy fabricated by horizontal and vertical twin-roll castingYong Hee Jo0Hae-Rim Moon1Jae Wung Bae2Jisung Yoo3Seok Gyu Lee4Yun-Soo Lee5Hyoung-Wook Kim6Department of Aluminum, Advanced Metals Division, Korea Institute of Materials Science, Changwon 51508, Republic of KoreaDepartment of Aluminum, Advanced Metals Division, Korea Institute of Materials Science, Changwon 51508, Republic of KoreaDepartment of Metallurgical Engineering, Pukyong National University, Busan 48513, Republic of KoreaDepartment of Hydrogen Materials Evaluation, Extreme Materials Institute, Korea Institute of Materials Science, Changwon 51508, Republic of KoreaAnalysis and Assessment Group, Research Institute of Industrial Science and Technology, Pohang 37673, Republic of KoreaDepartment of Aluminum, Advanced Metals Division, Korea Institute of Materials Science, Changwon 51508, Republic of KoreaDepartment of Aluminum, Advanced Metals Division, Korea Institute of Materials Science, Changwon 51508, Republic of Korea; Corresponding author.For the development of Al–Mg–Si strips with high mechanical performance via twin-roll casting (TRC) technology, it is necessary to understand through comparative analysis of traditional horizontal twin-roll casting (HTRC) and promising vertical twin-roll casting (VTRC) technologies. In this study, two types of Al–Mg–Si alloys (denoted as H-alloy and V-alloy) were fabricated by HTRC and VTRC using different casting speeds (0.69 and 20 m/min, respectively). The microstructural evolution and mechanical properties of the two alloys were comprehensively assessed and compared. To reveal the microstructural characteristics, various techniques including energy-dispersive X-ray spectroscopy (EDS), electron backscatter diffraction (EBSD), texture calculation and differential scanning calorimetry (DSC) were utilized. Center segregation occurred in H-alloy and V-alloy in the form of channel segregation and segregation bands, respectively. Moreover, the texture components of H-alloy showed rolling and shear textures, indicating continuous casting with hot-rolling during HTRC; however, those of V-alloy showed a random texture, indicating the absence of hot-rolling during VTRC. Therefore, the amount of plastic deformation in H-alloy was greater than that in V-alloy, which increased the yield strength through dislocation strengthening. Furthermore, solid-solution strengthening and precipitation strengthening primarily helped improve the strength of V-alloy, whereas pre-existing voids caused premature fracture. Our comparative analysis of the microstructural evolution and tensile properties realized by HTRC and VTRC is anticipated to broaden the understanding of twin-roll-cast strips.http://www.sciencedirect.com/science/article/pii/S223878542302269XAl–Mg–Si alloyTwin-roll castingCasting speedMicrostructural evolutionTensile properties |
| spellingShingle | Yong Hee Jo Hae-Rim Moon Jae Wung Bae Jisung Yoo Seok Gyu Lee Yun-Soo Lee Hyoung-Wook Kim Effects of casting speed on microstructural and tensile properties of Al–Mg–Si alloy fabricated by horizontal and vertical twin-roll casting Journal of Materials Research and Technology Al–Mg–Si alloy Twin-roll casting Casting speed Microstructural evolution Tensile properties |
| title | Effects of casting speed on microstructural and tensile properties of Al–Mg–Si alloy fabricated by horizontal and vertical twin-roll casting |
| title_full | Effects of casting speed on microstructural and tensile properties of Al–Mg–Si alloy fabricated by horizontal and vertical twin-roll casting |
| title_fullStr | Effects of casting speed on microstructural and tensile properties of Al–Mg–Si alloy fabricated by horizontal and vertical twin-roll casting |
| title_full_unstemmed | Effects of casting speed on microstructural and tensile properties of Al–Mg–Si alloy fabricated by horizontal and vertical twin-roll casting |
| title_short | Effects of casting speed on microstructural and tensile properties of Al–Mg–Si alloy fabricated by horizontal and vertical twin-roll casting |
| title_sort | effects of casting speed on microstructural and tensile properties of al mg si alloy fabricated by horizontal and vertical twin roll casting |
| topic | Al–Mg–Si alloy Twin-roll casting Casting speed Microstructural evolution Tensile properties |
| url | http://www.sciencedirect.com/science/article/pii/S223878542302269X |
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