| Multi-scale simulation of single crystal hollow turbine blade manufactured by liquid metal cooling process | |
| Alternative Title | Multi-scale simulation of single crystal hollow turbine blade manufactured by liquid metal cooling process |
| Yan Xuewei1; Zhang Hang2; Tang Ning3; Sun Changbo4; Xu Qingyan1; Liu Baicheng1 | |
| 2018 | |
| Source Publication | Progress in Natural Science: Materials International
 |
| ISSN | 1002-0071 |
| Volume | 28Issue:1Pages:78-84 |
| Abstract | Liquid metal cooling (LMC) process as a powerful directional solidification (DS) technique is prospectively used to manufacture single crystal (SC) turbine blades. An understanding of the temperature distribution and microstructure evolution in LMC process is required in order to improve the properties of the blades. For this reason, a multi-scale model coupling with the temperature field, grain growth and solute diffusion was established. The temperature distribution and mushy zone evolution of the hollow blade was simulated and discussed. According to the simulation results, the mushy zone might be convex and ahead of the ceramic beads at a lower withdrawal rate, while it will be concave and laggard at a higher withdrawal rate, and a uniform and horizontal mushy zone will be formed at a medium withdrawal rate. Grain growth of the blade at different withdrawal rates was also investigated. Single crystal structures were all selected out at three different withdrawal rates. Moreover, mis-orientation of the grains at 8?mm/min reached ~30°, while it was ~5° and ~15° at 10?mm/min and 12?mm/min, respectively. The model for predicting dendritic morphology was verified by corresponding experiment. Large scale for 2D dendritic distribution in the whole sections was investigated by experiment and simulation, and they presented a well agreement with each other. |
| Other Abstract | Liquid metal cooling (LMC) process as a powerful directional solidification (DS) technique is prospectively used to manufacture single crystal (SC) turbine blades. An understanding of the temperature distribution and microstructure evolution in LMC process is required in order to improve the properties of the blades. For this reason, a multi-scale model coupling with the temperature field, grain growth and solute diffusion was established. The temperature distribution and mushy zone evolution of the hollow blade was simulated and discussed. According to the simulation results, the mushy zone might be convex and ahead of the ceramic beads at a lower withdrawal rate, while it will be concave and laggard at a higher withdrawal rate, and a uniform and horizontal mushy zone will be formed at a medium withdrawal rate. Grain growth of the blade at different withdrawal rates was also investigated. Single crystal structures were all selected out at three different withdrawal rates. Moreover, mis-orientation of the grains at 8 mm/min reached ~30°, while it was ~5° and ~15° at 10mm/min and 12 mm/min, respectively. The model for predicting dendritic morphology was verified by corresponding experiment. Large scale for 2D dendritic distribution in the whole sections was investigated by experiment and simulation, and they presented a well agreement with each other. |
| Keyword | Hollow blade Single crystal Multi-scale simulation Liquid metal cooling |
| Indexed By | CSCD |
| Language | 英语 |
| CSCD ID | CSCD:6218829 |
| Citation statistics |
Cited Times:1[CSCD]
[CSCD Record]
|
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/141953 |
| Collection | 中国科学院金属研究所 |
| Affiliation | 1.清华大学 2.School of Mechanical Engineering, Xi'an Jiao Tong University 3.SUVAST Special Alloy Technology Co., LTD 4.中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | Yan Xuewei,Zhang Hang,Tang Ning,et al. Multi-scale simulation of single crystal hollow turbine blade manufactured by liquid metal cooling process[J]. Progress in Natural Science: Materials International,2018,28(1):78-84. |
| APA | Yan Xuewei,Zhang Hang,Tang Ning,Sun Changbo,Xu Qingyan,&Liu Baicheng.(2018).Multi-scale simulation of single crystal hollow turbine blade manufactured by liquid metal cooling process.Progress in Natural Science: Materials International,28(1),78-84. |
| MLA | Yan Xuewei,et al."Multi-scale simulation of single crystal hollow turbine blade manufactured by liquid metal cooling process".Progress in Natural Science: Materials International 28.1(2018):78-84. |
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