Multi-scale simulation of single crystal hollow turbine blade manufactured by liquid metal cooling process

IMR OpenIR

	Multi-scale simulation of single crystal hollow turbine blade manufactured by liquid metal cooling process
其他题名	Multi-scale simulation of single crystal hollow turbine blade manufactured by liquid metal cooling process
	Yan Xuewei 1; Zhang Hang 2; Tang Ning 3; Sun Changbo 4; Xu Qingyan 1; Liu Baicheng 1
	2018
发表期刊	Progress in Natural Science: Materials International
ISSN	1002-0071
卷号	28 期号:1 页码:78-84
摘要	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.
其他摘要	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.
关键词	Hollow blade Single crystal Multi-scale simulation Liquid metal cooling
收录类别	CSCD
语种	英语
CSCD记录号	CSCD:6218829
引用统计	被引频次：2[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/141953
专题	中国科学院金属研究所
作者单位	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
推荐引用方式 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.