Microstructural evolution of Ni–Co-xAl(-Cr) alloys fabricated by laser directed energy deposition
Understanding the microstructural evolution of Ni3Al-based alloy fabricated via laser directed energy deposition (L-DED) with varying Al content is of great significance for advancing the development and application of Ni3Al-based alloys in the field of high-temperature structural materials. In this...
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| Language: | English |
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Elsevier
2025-01-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424029478 |
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| author | Haozhi Chai Lilin Wang Xin Lin Weiming Huang Chao Wang Qiaodan Yan Weidong Huang |
| author_facet | Haozhi Chai Lilin Wang Xin Lin Weiming Huang Chao Wang Qiaodan Yan Weidong Huang |
| author_sort | Haozhi Chai |
| collection | DOAJ |
| description | Understanding the microstructural evolution of Ni3Al-based alloy fabricated via laser directed energy deposition (L-DED) with varying Al content is of great significance for advancing the development and application of Ni3Al-based alloys in the field of high-temperature structural materials. In this study, Ni–Co–Al ternary and Ni–Co–Al–Cr quaternary Ni3Al-based alloy samples with different Al contents were prepared. The microstructure was observed by SEM, EDS and TEM, and the effects of Al element on microstructure, solidification behavior and precipitated phase were investigated. The results show that the variety of primary phase and the volume fraction of eutectic phase can be significantly affected by the change of Al content. Comparing Ni–Co–Al ternary and Ni–Co–Al–Cr quaternary Ni3Al-based alloys, Cr element also has obvious influence on the microstructure. The addition of Cr element can change the content of Al at eutectic point, inhibit the peritectoid reaction between β phase and γ phase and suppress the formation of γ 'phase at the phase interface. |
| format | Article |
| id | doaj-art-53cc3b5e4c134c81949856ab7907bd82 |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-53cc3b5e4c134c81949856ab7907bd822025-01-19T06:25:37ZengElsevierJournal of Materials Research and Technology2238-78542025-01-013413131321Microstructural evolution of Ni–Co-xAl(-Cr) alloys fabricated by laser directed energy depositionHaozhi Chai0Lilin Wang1Xin Lin2Weiming Huang3Chao Wang4Qiaodan Yan5Weidong Huang6State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China; Key Laboratory of Metal High Performance Additive Manufacturing and Innovative Design, MIIT China, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, ChinaState Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China; Key Laboratory of Metal High Performance Additive Manufacturing and Innovative Design, MIIT China, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China; Corresponding author. State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China.State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China; Key Laboratory of Metal High Performance Additive Manufacturing and Innovative Design, MIIT China, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China; Corresponding author. State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China.State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China; Key Laboratory of Metal High Performance Additive Manufacturing and Innovative Design, MIIT China, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, ChinaState Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China; Key Laboratory of Metal High Performance Additive Manufacturing and Innovative Design, MIIT China, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, ChinaState Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China; Key Laboratory of Metal High Performance Additive Manufacturing and Innovative Design, MIIT China, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, ChinaState Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China; Key Laboratory of Metal High Performance Additive Manufacturing and Innovative Design, MIIT China, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, ChinaUnderstanding the microstructural evolution of Ni3Al-based alloy fabricated via laser directed energy deposition (L-DED) with varying Al content is of great significance for advancing the development and application of Ni3Al-based alloys in the field of high-temperature structural materials. In this study, Ni–Co–Al ternary and Ni–Co–Al–Cr quaternary Ni3Al-based alloy samples with different Al contents were prepared. The microstructure was observed by SEM, EDS and TEM, and the effects of Al element on microstructure, solidification behavior and precipitated phase were investigated. The results show that the variety of primary phase and the volume fraction of eutectic phase can be significantly affected by the change of Al content. Comparing Ni–Co–Al ternary and Ni–Co–Al–Cr quaternary Ni3Al-based alloys, Cr element also has obvious influence on the microstructure. The addition of Cr element can change the content of Al at eutectic point, inhibit the peritectoid reaction between β phase and γ phase and suppress the formation of γ 'phase at the phase interface.http://www.sciencedirect.com/science/article/pii/S2238785424029478Laser directed energy depositionNi3Al-based alloyMicrostructure evolutionPhase transformation |
| spellingShingle | Haozhi Chai Lilin Wang Xin Lin Weiming Huang Chao Wang Qiaodan Yan Weidong Huang Microstructural evolution of Ni–Co-xAl(-Cr) alloys fabricated by laser directed energy deposition Journal of Materials Research and Technology Laser directed energy deposition Ni3Al-based alloy Microstructure evolution Phase transformation |
| title | Microstructural evolution of Ni–Co-xAl(-Cr) alloys fabricated by laser directed energy deposition |
| title_full | Microstructural evolution of Ni–Co-xAl(-Cr) alloys fabricated by laser directed energy deposition |
| title_fullStr | Microstructural evolution of Ni–Co-xAl(-Cr) alloys fabricated by laser directed energy deposition |
| title_full_unstemmed | Microstructural evolution of Ni–Co-xAl(-Cr) alloys fabricated by laser directed energy deposition |
| title_short | Microstructural evolution of Ni–Co-xAl(-Cr) alloys fabricated by laser directed energy deposition |
| title_sort | microstructural evolution of ni co xal cr alloys fabricated by laser directed energy deposition |
| topic | Laser directed energy deposition Ni3Al-based alloy Microstructure evolution Phase transformation |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424029478 |
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