Microstructure and phase stability of C-doped AlCoCrFeNi2.1 eutectic high-entropy alloys at 600 °C
The AlCoCrFeNi2.1 eutectic high-entropy alloy (EHEA) presents a promising balance between high strength and ductility, with its excellent mechanical properties maintained up to 600–700 °C. C doping has been shown to further enhance its strength. However, the phase stability of the alloy remains unce...
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| Format: | Article |
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Elsevier
2025-04-01
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| Series: | Next Materials |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2949822824003496 |
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| author | Y.S. Wang J.Q. Yao D.X. Wang S.R. Li Y. Shi Z.H. Yin X.P. Dong X.W. Liu |
| author_facet | Y.S. Wang J.Q. Yao D.X. Wang S.R. Li Y. Shi Z.H. Yin X.P. Dong X.W. Liu |
| author_sort | Y.S. Wang |
| collection | DOAJ |
| description | The AlCoCrFeNi2.1 eutectic high-entropy alloy (EHEA) presents a promising balance between high strength and ductility, with its excellent mechanical properties maintained up to 600–700 °C. C doping has been shown to further enhance its strength. However, the phase stability of the alloy remains uncertain. This study evaluated the microstructure and phase stability of both the as-cast AlCoCrFeNi2.1 EHEA and its C-doped counterpart, (AlCoCrFeNi2.1)97C3, at 600 °C. After 20 days of annealing, the eutectic structure of the AlCoCrFeNi2.1 EHEA exhibited slight coarsening in localized areas without phase decomposition. In contrast, the C-doped alloy developed needle-like and granular precipitates within the BCC phase. |
| format | Article |
| id | doaj-art-585eb99288d64744b7358fde0e3883ff |
| institution | OA Journals |
| issn | 2949-8228 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Next Materials |
| spelling | doaj-art-585eb99288d64744b7358fde0e3883ff2025-08-20T02:18:49ZengElsevierNext Materials2949-82282025-04-01710045110.1016/j.nxmate.2024.100451Microstructure and phase stability of C-doped AlCoCrFeNi2.1 eutectic high-entropy alloys at 600 °CY.S. Wang0J.Q. Yao1D.X. Wang2S.R. Li3Y. Shi4Z.H. Yin5X.P. Dong6X.W. Liu7State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaState Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; Corresponding authors.State Key Laboratory of Special Rare Metal Materials, Northwest Rare Metal Materials Research Institute Ningxia Co., Ltd, Shizuishan 753000, China; Corresponding authors.State Key Laboratory of Special Rare Metal Materials, Northwest Rare Metal Materials Research Institute Ningxia Co., Ltd, Shizuishan 753000, ChinaState Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaState Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaState Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaState Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaThe AlCoCrFeNi2.1 eutectic high-entropy alloy (EHEA) presents a promising balance between high strength and ductility, with its excellent mechanical properties maintained up to 600–700 °C. C doping has been shown to further enhance its strength. However, the phase stability of the alloy remains uncertain. This study evaluated the microstructure and phase stability of both the as-cast AlCoCrFeNi2.1 EHEA and its C-doped counterpart, (AlCoCrFeNi2.1)97C3, at 600 °C. After 20 days of annealing, the eutectic structure of the AlCoCrFeNi2.1 EHEA exhibited slight coarsening in localized areas without phase decomposition. In contrast, the C-doped alloy developed needle-like and granular precipitates within the BCC phase.http://www.sciencedirect.com/science/article/pii/S2949822824003496Eutectic high-entropy alloyMicrostructureCastPhase stability |
| spellingShingle | Y.S. Wang J.Q. Yao D.X. Wang S.R. Li Y. Shi Z.H. Yin X.P. Dong X.W. Liu Microstructure and phase stability of C-doped AlCoCrFeNi2.1 eutectic high-entropy alloys at 600 °C Next Materials Eutectic high-entropy alloy Microstructure Cast Phase stability |
| title | Microstructure and phase stability of C-doped AlCoCrFeNi2.1 eutectic high-entropy alloys at 600 °C |
| title_full | Microstructure and phase stability of C-doped AlCoCrFeNi2.1 eutectic high-entropy alloys at 600 °C |
| title_fullStr | Microstructure and phase stability of C-doped AlCoCrFeNi2.1 eutectic high-entropy alloys at 600 °C |
| title_full_unstemmed | Microstructure and phase stability of C-doped AlCoCrFeNi2.1 eutectic high-entropy alloys at 600 °C |
| title_short | Microstructure and phase stability of C-doped AlCoCrFeNi2.1 eutectic high-entropy alloys at 600 °C |
| title_sort | microstructure and phase stability of c doped alcocrfeni2 1 eutectic high entropy alloys at 600 °c |
| topic | Eutectic high-entropy alloy Microstructure Cast Phase stability |
| url | http://www.sciencedirect.com/science/article/pii/S2949822824003496 |
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