Effects of copper content on the microstructure and properties of AlCuxCrTiV high-entropy alloys
This study investigates the influence of Cu content on the microstructure and properties of AlCuxCrTiV (x = 0.4, 1.0, 1.7) high-entropy alloys (HEAs) fabricated via vacuum arc melting. Advanced characterization techniques were used to analyze the alloy's composition, microstructure, mechanical...
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| Language: | English |
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Elsevier
2025-03-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785425002510 |
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| author | Ke Liu Zhaoyang Wang Lizhong Su Yuanyuan Chen Huichen Yu |
| author_facet | Ke Liu Zhaoyang Wang Lizhong Su Yuanyuan Chen Huichen Yu |
| author_sort | Ke Liu |
| collection | DOAJ |
| description | This study investigates the influence of Cu content on the microstructure and properties of AlCuxCrTiV (x = 0.4, 1.0, 1.7) high-entropy alloys (HEAs) fabricated via vacuum arc melting. Advanced characterization techniques were used to analyze the alloy's composition, microstructure, mechanical performance, and corrosion resistance. The results show that the alloys primarily consist of BCC, FCC, and HCP phases. With increasing Cu content, the HCP phase volume fraction increases, while grain size decreases. Mechanical testing reveals a slight reduction in hardness but significant improvements in strength and fracture strain. The AlCu1.7CrTiV alloy achieves a compressive strength of 1688 MPa, a yield strength of 1443 MPa, and a fracture strain of 17%. Electrochemical tests demonstrate that higher Cu content reduces corrosion current density, increases corrosion potential, and enhances charge transfer resistance, thereby improving corrosion resistance. Overall, Cu promotes HCP phase formation, optimizes the soft-hard phase balance, and enhances ductility while maintaining high strength. Furthermore, Cu bonding strength significantly impacts corrosion resistance. These findings provide valuable insights for the optimization and practical application of AlCuxCrTiV HEAs. |
| format | Article |
| id | doaj-art-fbd6384a611e48b9a486d26319890e06 |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-fbd6384a611e48b9a486d26319890e062025-02-06T05:11:56ZengElsevierJournal of Materials Research and Technology2238-78542025-03-013529732983Effects of copper content on the microstructure and properties of AlCuxCrTiV high-entropy alloysKe Liu0Zhaoyang Wang1Lizhong Su2Yuanyuan Chen3Huichen Yu4School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan, 030024, China; Science and Technology on Advanced High Temperature Structural Materials Laboratory, AECC Key Laboratory of Aeronautical Materials Testing and Evaluation, Beijing Key Laboratory of Aeronautical Materials Testing and Evaluation, Beijing Institute of Aeronautical Materials, Beijing, 100095, China; Shanxi Technology Innovation Center of Flange Basic Component Forming, Taiyuan, 030024, ChinaPowder Metallurgy Institute of Central South University, Central South University, Changsha, 410083, ChinaSchool of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan, 030024, ChinaSchool of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan, 030024, ChinaScience and Technology on Advanced High Temperature Structural Materials Laboratory, AECC Key Laboratory of Aeronautical Materials Testing and Evaluation, Beijing Key Laboratory of Aeronautical Materials Testing and Evaluation, Beijing Institute of Aeronautical Materials, Beijing, 100095, China; Corresponding author.This study investigates the influence of Cu content on the microstructure and properties of AlCuxCrTiV (x = 0.4, 1.0, 1.7) high-entropy alloys (HEAs) fabricated via vacuum arc melting. Advanced characterization techniques were used to analyze the alloy's composition, microstructure, mechanical performance, and corrosion resistance. The results show that the alloys primarily consist of BCC, FCC, and HCP phases. With increasing Cu content, the HCP phase volume fraction increases, while grain size decreases. Mechanical testing reveals a slight reduction in hardness but significant improvements in strength and fracture strain. The AlCu1.7CrTiV alloy achieves a compressive strength of 1688 MPa, a yield strength of 1443 MPa, and a fracture strain of 17%. Electrochemical tests demonstrate that higher Cu content reduces corrosion current density, increases corrosion potential, and enhances charge transfer resistance, thereby improving corrosion resistance. Overall, Cu promotes HCP phase formation, optimizes the soft-hard phase balance, and enhances ductility while maintaining high strength. Furthermore, Cu bonding strength significantly impacts corrosion resistance. These findings provide valuable insights for the optimization and practical application of AlCuxCrTiV HEAs.http://www.sciencedirect.com/science/article/pii/S2238785425002510High-entropy alloysMultiphase structureMicrostructureMechanical propertiesCorrosion resistance |
| spellingShingle | Ke Liu Zhaoyang Wang Lizhong Su Yuanyuan Chen Huichen Yu Effects of copper content on the microstructure and properties of AlCuxCrTiV high-entropy alloys Journal of Materials Research and Technology High-entropy alloys Multiphase structure Microstructure Mechanical properties Corrosion resistance |
| title | Effects of copper content on the microstructure and properties of AlCuxCrTiV high-entropy alloys |
| title_full | Effects of copper content on the microstructure and properties of AlCuxCrTiV high-entropy alloys |
| title_fullStr | Effects of copper content on the microstructure and properties of AlCuxCrTiV high-entropy alloys |
| title_full_unstemmed | Effects of copper content on the microstructure and properties of AlCuxCrTiV high-entropy alloys |
| title_short | Effects of copper content on the microstructure and properties of AlCuxCrTiV high-entropy alloys |
| title_sort | effects of copper content on the microstructure and properties of alcuxcrtiv high entropy alloys |
| topic | High-entropy alloys Multiphase structure Microstructure Mechanical properties Corrosion resistance |
| url | http://www.sciencedirect.com/science/article/pii/S2238785425002510 |
| work_keys_str_mv | AT keliu effectsofcoppercontentonthemicrostructureandpropertiesofalcuxcrtivhighentropyalloys AT zhaoyangwang effectsofcoppercontentonthemicrostructureandpropertiesofalcuxcrtivhighentropyalloys AT lizhongsu effectsofcoppercontentonthemicrostructureandpropertiesofalcuxcrtivhighentropyalloys AT yuanyuanchen effectsofcoppercontentonthemicrostructureandpropertiesofalcuxcrtivhighentropyalloys AT huichenyu effectsofcoppercontentonthemicrostructureandpropertiesofalcuxcrtivhighentropyalloys |