Synergistic effect of Nb and W alloying on the microstructure and mechanical properties of CoCrFeNi high entropy alloys
The strength and plasticity trade-off in metal materials can be effectively addressed by Eutectic High-Entropy Alloys (EHEAs) through the realization of heterogeneous biphase layered structures at both micrometer and nanometer scales. In this work, a series of (CoCrFeNi)88NbxW(12-x) EHEAs were prepa...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-01-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424000036 |
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| author | Haofeng Lei Chen Chen Xicong Ye Huijun Kang Zhe Li Junwei Fu Tianyuan Zhang Zhenjun Gao Bo Li Dong Fang Liang Wang |
| author_facet | Haofeng Lei Chen Chen Xicong Ye Huijun Kang Zhe Li Junwei Fu Tianyuan Zhang Zhenjun Gao Bo Li Dong Fang Liang Wang |
| author_sort | Haofeng Lei |
| collection | DOAJ |
| description | The strength and plasticity trade-off in metal materials can be effectively addressed by Eutectic High-Entropy Alloys (EHEAs) through the realization of heterogeneous biphase layered structures at both micrometer and nanometer scales. In this work, a series of (CoCrFeNi)88NbxW(12-x) EHEAs were prepared, and the effects of the synergistic of Nb and W elements on the microstructure and mechanical properties of CoCrFeNi High-Entropy Alloys (HEAs) were investigated. With the increase of Nb content and the decrease of W content, the microstructure of the alloy underwent three changes, from Face Center Cubic (FCC) + μ biphase to FCC + μ + Laves triple phase, and finally to FCC + Laves biphase. The strength of the alloy increases, but the compression rate decreases. Among these alloys, (CoCrFeNi)88Nb10W2 alloy exhibits exceptional mechanical properties. The synergistic effect of precipitation strengthening and grain boundary strengthening makes the yield strength, fracture strength, and plastic strain of the alloy are 1568 MPa, 2516 MPa, and 32 % respectively. In addition, in the CoCrFeNi HEAs, the weighted average atomic radius ratio (rm‾/rQ) is used to further precise the phase selection law of Laves phase and μ phase. When rm‾/rQ < 1.112, HEAs forms the μ phase, when 1.112 ≤ rm‾/rQ ≤ 1.14, HEAs forms the Laves + μ biphase, when rm‾/rQ > 1.14, HEAs forms the Laves phase. The results can provide a basis for synergistic strengthening and phase selection of CoCrFeNi HEAs. |
| first_indexed | 2024-03-08T09:28:17Z |
| format | Article |
| id | doaj.art-cb938dadedc34ea794f67598a0d5d487 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-08T09:28:17Z |
| publishDate | 2024-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-cb938dadedc34ea794f67598a0d5d4872024-01-31T05:44:27ZengElsevierJournal of Materials Research and Technology2238-78542024-01-012837653774Synergistic effect of Nb and W alloying on the microstructure and mechanical properties of CoCrFeNi high entropy alloysHaofeng Lei0Chen Chen1Xicong Ye2Huijun Kang3Zhe Li4Junwei Fu5Tianyuan Zhang6Zhenjun Gao7Bo Li8Dong Fang9Liang Wang10College of Mechanical & Power Engineering, China Three Gorges University, Yichang, 443002, ChinaCollege of Mechanical & Power Engineering, China Three Gorges University, Yichang, 443002, ChinaHubei Engineering Research Center for Graphite Additive Manufacturing Technology and Equipment, China Three Gorges University, Yichang, 443002, China; College of Mechanical & Power Engineering, China Three Gorges University, Yichang, 443002, China; Corresponding author. Hubei Engineering Research Center for Graphite Additive Manufacturing Technology and Equipment, China Three Gorges University, Yichang, 443002, China.Key Laboratory of Materials Modification By Laser, Ion and Electron Beams (Dalian University of Technology), Ministry of Education, Dalian, 116024, ChinaNational Key Laboratory for Precision Hot Processing of Metals, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001, ChinaCollege of Mechanical & Power Engineering, China Three Gorges University, Yichang, 443002, ChinaCollege of Mechanical & Power Engineering, China Three Gorges University, Yichang, 443002, ChinaCollege of Mechanical & Power Engineering, China Three Gorges University, Yichang, 443002, China; Corresponding author.Hubei Engineering Research Center for Graphite Additive Manufacturing Technology and Equipment, China Three Gorges University, Yichang, 443002, China; College of Mechanical & Power Engineering, China Three Gorges University, Yichang, 443002, ChinaHubei Engineering Research Center for Graphite Additive Manufacturing Technology and Equipment, China Three Gorges University, Yichang, 443002, China; College of Mechanical & Power Engineering, China Three Gorges University, Yichang, 443002, ChinaNational Key Laboratory for Precision Hot Processing of Metals, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001, China; Corresponding author.The strength and plasticity trade-off in metal materials can be effectively addressed by Eutectic High-Entropy Alloys (EHEAs) through the realization of heterogeneous biphase layered structures at both micrometer and nanometer scales. In this work, a series of (CoCrFeNi)88NbxW(12-x) EHEAs were prepared, and the effects of the synergistic of Nb and W elements on the microstructure and mechanical properties of CoCrFeNi High-Entropy Alloys (HEAs) were investigated. With the increase of Nb content and the decrease of W content, the microstructure of the alloy underwent three changes, from Face Center Cubic (FCC) + μ biphase to FCC + μ + Laves triple phase, and finally to FCC + Laves biphase. The strength of the alloy increases, but the compression rate decreases. Among these alloys, (CoCrFeNi)88Nb10W2 alloy exhibits exceptional mechanical properties. The synergistic effect of precipitation strengthening and grain boundary strengthening makes the yield strength, fracture strength, and plastic strain of the alloy are 1568 MPa, 2516 MPa, and 32 % respectively. In addition, in the CoCrFeNi HEAs, the weighted average atomic radius ratio (rm‾/rQ) is used to further precise the phase selection law of Laves phase and μ phase. When rm‾/rQ < 1.112, HEAs forms the μ phase, when 1.112 ≤ rm‾/rQ ≤ 1.14, HEAs forms the Laves + μ biphase, when rm‾/rQ > 1.14, HEAs forms the Laves phase. The results can provide a basis for synergistic strengthening and phase selection of CoCrFeNi HEAs.http://www.sciencedirect.com/science/article/pii/S2238785424000036High-entropy alloysEutecticSynergistic alloying effectMicrostructuresMechanical properties |
| spellingShingle | Haofeng Lei Chen Chen Xicong Ye Huijun Kang Zhe Li Junwei Fu Tianyuan Zhang Zhenjun Gao Bo Li Dong Fang Liang Wang Synergistic effect of Nb and W alloying on the microstructure and mechanical properties of CoCrFeNi high entropy alloys Journal of Materials Research and Technology High-entropy alloys Eutectic Synergistic alloying effect Microstructures Mechanical properties |
| title | Synergistic effect of Nb and W alloying on the microstructure and mechanical properties of CoCrFeNi high entropy alloys |
| title_full | Synergistic effect of Nb and W alloying on the microstructure and mechanical properties of CoCrFeNi high entropy alloys |
| title_fullStr | Synergistic effect of Nb and W alloying on the microstructure and mechanical properties of CoCrFeNi high entropy alloys |
| title_full_unstemmed | Synergistic effect of Nb and W alloying on the microstructure and mechanical properties of CoCrFeNi high entropy alloys |
| title_short | Synergistic effect of Nb and W alloying on the microstructure and mechanical properties of CoCrFeNi high entropy alloys |
| title_sort | synergistic effect of nb and w alloying on the microstructure and mechanical properties of cocrfeni high entropy alloys |
| topic | High-entropy alloys Eutectic Synergistic alloying effect Microstructures Mechanical properties |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424000036 |
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