Effect of directional solidification methods on solid solution window in Ni-based single-crystal superalloy
In this work, the effect of directional solidification methods on solid solution windows in two Ni-based single-crystal superalloys is investigated. The sample prepared using the liquid metal cooling (LMC) method was found to contain smaller dendrite spacing, lower dendrite segregation and eutectic,...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-05-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S223878542301058X |
| _version_ | 1797798773414428672 |
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| author | Hengzhe Wang Haibo Long Min Sun Guo Yang Hua Wei Shengcheng Mao Ze Zhang Xiaodong Han |
| author_facet | Hengzhe Wang Haibo Long Min Sun Guo Yang Hua Wei Shengcheng Mao Ze Zhang Xiaodong Han |
| author_sort | Hengzhe Wang |
| collection | DOAJ |
| description | In this work, the effect of directional solidification methods on solid solution windows in two Ni-based single-crystal superalloys is investigated. The sample prepared using the liquid metal cooling (LMC) method was found to contain smaller dendrite spacing, lower dendrite segregation and eutectic, and a smaller size of γ′ phase than that of the high-speed rapid solidification (HRS) method. The alloy-2 contained higher Cr, Co and lowered Re exhibited similar dendrite spacing and volume fraction of eutectic, and the lower dendrite segregation and smaller size of γ′ phase than that of the other alloy-1. The solution treatment window is broadened by adopting the LMC method or changing the composition to alloy-2. This is mainly realized by decreasing the lower limit temperature, and the upper limit temperature remains unchanged. According to the eutectic only contains the melt temperature, a similar eutectic is responsible for the unchanged upper limit temperature. At this state, the lower bound of the temperature is the dissolution of the γʹ phase in the dendrite core. The smaller size of γ′ phase and the elements' partition ratio are responsible for the change in the solid solution window. |
| first_indexed | 2024-03-13T04:08:54Z |
| format | Article |
| id | doaj.art-ef8ce2a2785b4634a2f10ca2a36c5095 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-13T04:08:54Z |
| publishDate | 2023-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-ef8ce2a2785b4634a2f10ca2a36c50952023-06-21T06:57:43ZengElsevierJournal of Materials Research and Technology2238-78542023-05-012483078319Effect of directional solidification methods on solid solution window in Ni-based single-crystal superalloyHengzhe Wang0Haibo Long1Min Sun2Guo Yang3Hua Wei4Shengcheng Mao5Ze Zhang6Xiaodong Han7Beijing Key Laboratory of Microstructure and Property of Advanced Materials, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, ChinaBeijing Key Laboratory of Microstructure and Property of Advanced Materials, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, China; Corresponding author.Beijing Key Laboratory of Microstructure and Property of Advanced Materials, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, ChinaBeijing Key Laboratory of Microstructure and Property of Advanced Materials, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, ChinaCenter of Hypergravity Experimental and Interdisciplinary Research, Zhejiang University, 310058 Hangzhou, ChinaBeijing Key Laboratory of Microstructure and Property of Advanced Materials, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, ChinaState Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, 310027 Hangzhou, ChinaBeijing Key Laboratory of Microstructure and Property of Advanced Materials, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, ChinaIn this work, the effect of directional solidification methods on solid solution windows in two Ni-based single-crystal superalloys is investigated. The sample prepared using the liquid metal cooling (LMC) method was found to contain smaller dendrite spacing, lower dendrite segregation and eutectic, and a smaller size of γ′ phase than that of the high-speed rapid solidification (HRS) method. The alloy-2 contained higher Cr, Co and lowered Re exhibited similar dendrite spacing and volume fraction of eutectic, and the lower dendrite segregation and smaller size of γ′ phase than that of the other alloy-1. The solution treatment window is broadened by adopting the LMC method or changing the composition to alloy-2. This is mainly realized by decreasing the lower limit temperature, and the upper limit temperature remains unchanged. According to the eutectic only contains the melt temperature, a similar eutectic is responsible for the unchanged upper limit temperature. At this state, the lower bound of the temperature is the dissolution of the γʹ phase in the dendrite core. The smaller size of γ′ phase and the elements' partition ratio are responsible for the change in the solid solution window.http://www.sciencedirect.com/science/article/pii/S223878542301058XNi-base superalloysElementSolidification methodSolid solution windowMicrostructure |
| spellingShingle | Hengzhe Wang Haibo Long Min Sun Guo Yang Hua Wei Shengcheng Mao Ze Zhang Xiaodong Han Effect of directional solidification methods on solid solution window in Ni-based single-crystal superalloy Journal of Materials Research and Technology Ni-base superalloys Element Solidification method Solid solution window Microstructure |
| title | Effect of directional solidification methods on solid solution window in Ni-based single-crystal superalloy |
| title_full | Effect of directional solidification methods on solid solution window in Ni-based single-crystal superalloy |
| title_fullStr | Effect of directional solidification methods on solid solution window in Ni-based single-crystal superalloy |
| title_full_unstemmed | Effect of directional solidification methods on solid solution window in Ni-based single-crystal superalloy |
| title_short | Effect of directional solidification methods on solid solution window in Ni-based single-crystal superalloy |
| title_sort | effect of directional solidification methods on solid solution window in ni based single crystal superalloy |
| topic | Ni-base superalloys Element Solidification method Solid solution window Microstructure |
| url | http://www.sciencedirect.com/science/article/pii/S223878542301058X |
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