Microstructural, electrochemical, and hot corrosion analysis of CoCrFeCuTi high entropy alloy reinforced titanium matrix composites synthesized by microwave sintering
CoCrFeCuTi High Entropy Alloy (HEA) is reinforced in Ti6Al6V2Sn alloy through microwave sintering-assisted powder metallurgy and its corrosion behaviour is investigated under different conditions. The ball-milled CoCrFeCuTi HEA powder exhibits 17 μm average particle size of irregular fragments with...
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| Language: | English |
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KeAi Communications Co., Ltd.
2025-01-01
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| Series: | International Journal of Lightweight Materials and Manufacture |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2588840424000684 |
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| author | S. Ragunath N. Radhika S Aravind Krishna Alokesh Pramanik |
| author_facet | S. Ragunath N. Radhika S Aravind Krishna Alokesh Pramanik |
| author_sort | S. Ragunath |
| collection | DOAJ |
| description | CoCrFeCuTi High Entropy Alloy (HEA) is reinforced in Ti6Al6V2Sn alloy through microwave sintering-assisted powder metallurgy and its corrosion behaviour is investigated under different conditions. The ball-milled CoCrFeCuTi HEA powder exhibits 17 μm average particle size of irregular fragments with a single-phase BCC structure and is added as reinforcement in Ti alloy at 3, 6, 9, and 12 wt%. As more reinforcement is added, the α-Ti decreases and β-Ti increases which enhances the interfacial bonding. The pinning effects from reinforcements inhibit grain growth contributing to improved properties including higher relative density with less porosity. The 12 wt% composite showed remarkable microhardness of 734 HV which is increased by 43.8% over Ti alloy. The 12 wt% composite also achieved finer grains (0.345 μm) due to uniform internal heat generation from the process. Corrosion behaviour is assessed through electrochemical corrosion and hot corrosion analysis, with 12 wt% composite demonstrating better corrosion resistance compared to Ti alloy. The induced corrosion products, formation of passivation films, and their mechanism are examined by morphological analysis. |
| format | Article |
| id | doaj-art-0691fd46d0124814b0bb447a0e663b1c |
| institution | Kabale University |
| issn | 2588-8404 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | International Journal of Lightweight Materials and Manufacture |
| spelling | doaj-art-0691fd46d0124814b0bb447a0e663b1c2025-02-09T05:00:55ZengKeAi Communications Co., Ltd.International Journal of Lightweight Materials and Manufacture2588-84042025-01-0181141155Microstructural, electrochemical, and hot corrosion analysis of CoCrFeCuTi high entropy alloy reinforced titanium matrix composites synthesized by microwave sinteringS. Ragunath0N. Radhika1S Aravind Krishna2Alokesh Pramanik3Department of Mechanical Engineering, Amrita School of Engineering, Coimbatore, Amrita Vishwa Vidyapeetham, IndiaDepartment of Mechanical Engineering, Amrita School of Engineering, Coimbatore, Amrita Vishwa Vidyapeetham, India; Corresponding author.Department of Mechanical Engineering, Amrita School of Engineering, Coimbatore, Amrita Vishwa Vidyapeetham, IndiaSchool of Civil and Mechanical Engineering, Curtin University, Bentley, WA, AustraliaCoCrFeCuTi High Entropy Alloy (HEA) is reinforced in Ti6Al6V2Sn alloy through microwave sintering-assisted powder metallurgy and its corrosion behaviour is investigated under different conditions. The ball-milled CoCrFeCuTi HEA powder exhibits 17 μm average particle size of irregular fragments with a single-phase BCC structure and is added as reinforcement in Ti alloy at 3, 6, 9, and 12 wt%. As more reinforcement is added, the α-Ti decreases and β-Ti increases which enhances the interfacial bonding. The pinning effects from reinforcements inhibit grain growth contributing to improved properties including higher relative density with less porosity. The 12 wt% composite showed remarkable microhardness of 734 HV which is increased by 43.8% over Ti alloy. The 12 wt% composite also achieved finer grains (0.345 μm) due to uniform internal heat generation from the process. Corrosion behaviour is assessed through electrochemical corrosion and hot corrosion analysis, with 12 wt% composite demonstrating better corrosion resistance compared to Ti alloy. The induced corrosion products, formation of passivation films, and their mechanism are examined by morphological analysis.http://www.sciencedirect.com/science/article/pii/S2588840424000684Ti6Al6V2SnHigh entropy alloyMicrowave sinteringGrain refinementEBSDCorrosion |
| spellingShingle | S. Ragunath N. Radhika S Aravind Krishna Alokesh Pramanik Microstructural, electrochemical, and hot corrosion analysis of CoCrFeCuTi high entropy alloy reinforced titanium matrix composites synthesized by microwave sintering International Journal of Lightweight Materials and Manufacture Ti6Al6V2Sn High entropy alloy Microwave sintering Grain refinement EBSD Corrosion |
| title | Microstructural, electrochemical, and hot corrosion analysis of CoCrFeCuTi high entropy alloy reinforced titanium matrix composites synthesized by microwave sintering |
| title_full | Microstructural, electrochemical, and hot corrosion analysis of CoCrFeCuTi high entropy alloy reinforced titanium matrix composites synthesized by microwave sintering |
| title_fullStr | Microstructural, electrochemical, and hot corrosion analysis of CoCrFeCuTi high entropy alloy reinforced titanium matrix composites synthesized by microwave sintering |
| title_full_unstemmed | Microstructural, electrochemical, and hot corrosion analysis of CoCrFeCuTi high entropy alloy reinforced titanium matrix composites synthesized by microwave sintering |
| title_short | Microstructural, electrochemical, and hot corrosion analysis of CoCrFeCuTi high entropy alloy reinforced titanium matrix composites synthesized by microwave sintering |
| title_sort | microstructural electrochemical and hot corrosion analysis of cocrfecuti high entropy alloy reinforced titanium matrix composites synthesized by microwave sintering |
| topic | Ti6Al6V2Sn High entropy alloy Microwave sintering Grain refinement EBSD Corrosion |
| url | http://www.sciencedirect.com/science/article/pii/S2588840424000684 |
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