Novel twin-roll-cast Ti/Al clad sheets with excellent tensile properties
Abstract Pure Ti or Ti alloys are recently spot-lighted in construction industries because they have excellent resistance to corrosions, chemicals, and climates as well as various coloring characteristics, but their wide applications are postponed by their expensiveness and poor formability. We pres...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2017-08-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-017-08681-9 |
| _version_ | 1818749297534959616 |
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| author | Dae Woong Kim Dong Ho Lee Jung-Su Kim Seok Su Sohn Hyoung Seop Kim Sunghak Lee |
| author_facet | Dae Woong Kim Dong Ho Lee Jung-Su Kim Seok Su Sohn Hyoung Seop Kim Sunghak Lee |
| author_sort | Dae Woong Kim |
| collection | DOAJ |
| description | Abstract Pure Ti or Ti alloys are recently spot-lighted in construction industries because they have excellent resistance to corrosions, chemicals, and climates as well as various coloring characteristics, but their wide applications are postponed by their expensiveness and poor formability. We present a new fabrication process of Ti/Al clad sheets by bonding a thin Ti sheet on to a 5052 Al alloy melt during vertical-twin-roll casting. This process has merits of reduced production costs as well as improved tensile properties. In the as-twin-roll-cast clad sheet, the homogeneously cast microstructure existed in the Al alloy substrate side, while the Ti/Al interface did not contain any reaction products, pores, cracks, or lateral delamination, which indicated the successful twin-roll casting. When this sheet was annealed at 350 °C~600 °C, the metallurgical bonding was expanded by interfacial diffusion, thereby leading to improvement in tensile properties over those calculated by a rule of mixtures. The ductility was also improved over that of 5052-O Al alloy (25%) or pure Ti (25%) by synergic effect of homogeneous deformation due to excellent Ti/Al bonding. This work provides new applications of Ti/Al clad sheets to lightweight-alloy clad sheets requiring excellent formability and corrosion resistance as well as alloy cost saving. |
| first_indexed | 2024-12-18T04:01:33Z |
| format | Article |
| id | doaj.art-30b4e68dc337466781ce3a9eda7d966c |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-18T04:01:33Z |
| publishDate | 2017-08-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-30b4e68dc337466781ce3a9eda7d966c2022-12-21T21:21:40ZengNature PortfolioScientific Reports2045-23222017-08-017111110.1038/s41598-017-08681-9Novel twin-roll-cast Ti/Al clad sheets with excellent tensile propertiesDae Woong Kim0Dong Ho Lee1Jung-Su Kim2Seok Su Sohn3Hyoung Seop Kim4Sunghak Lee5Center for Advanced Aerospace Materials, Pohang University of Science and TechnologyCenter for Advanced Aerospace Materials, Pohang University of Science and TechnologyCenter for Advanced Aerospace Materials, Pohang University of Science and TechnologyCenter for Advanced Aerospace Materials, Pohang University of Science and TechnologyCenter for Advanced Aerospace Materials, Pohang University of Science and TechnologyCenter for Advanced Aerospace Materials, Pohang University of Science and TechnologyAbstract Pure Ti or Ti alloys are recently spot-lighted in construction industries because they have excellent resistance to corrosions, chemicals, and climates as well as various coloring characteristics, but their wide applications are postponed by their expensiveness and poor formability. We present a new fabrication process of Ti/Al clad sheets by bonding a thin Ti sheet on to a 5052 Al alloy melt during vertical-twin-roll casting. This process has merits of reduced production costs as well as improved tensile properties. In the as-twin-roll-cast clad sheet, the homogeneously cast microstructure existed in the Al alloy substrate side, while the Ti/Al interface did not contain any reaction products, pores, cracks, or lateral delamination, which indicated the successful twin-roll casting. When this sheet was annealed at 350 °C~600 °C, the metallurgical bonding was expanded by interfacial diffusion, thereby leading to improvement in tensile properties over those calculated by a rule of mixtures. The ductility was also improved over that of 5052-O Al alloy (25%) or pure Ti (25%) by synergic effect of homogeneous deformation due to excellent Ti/Al bonding. This work provides new applications of Ti/Al clad sheets to lightweight-alloy clad sheets requiring excellent formability and corrosion resistance as well as alloy cost saving.https://doi.org/10.1038/s41598-017-08681-9 |
| spellingShingle | Dae Woong Kim Dong Ho Lee Jung-Su Kim Seok Su Sohn Hyoung Seop Kim Sunghak Lee Novel twin-roll-cast Ti/Al clad sheets with excellent tensile properties Scientific Reports |
| title | Novel twin-roll-cast Ti/Al clad sheets with excellent tensile properties |
| title_full | Novel twin-roll-cast Ti/Al clad sheets with excellent tensile properties |
| title_fullStr | Novel twin-roll-cast Ti/Al clad sheets with excellent tensile properties |
| title_full_unstemmed | Novel twin-roll-cast Ti/Al clad sheets with excellent tensile properties |
| title_short | Novel twin-roll-cast Ti/Al clad sheets with excellent tensile properties |
| title_sort | novel twin roll cast ti al clad sheets with excellent tensile properties |
| url | https://doi.org/10.1038/s41598-017-08681-9 |
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