MODELING AND SIMULATION OF DIRECTIONAL SOLIDIFICATION BY LMC PROCESS FOR NICKEL BASE SUPERALLOY CASTING

doi:10.11900/0412.1961.2015.00338

Acta Metall Sin

2015, Vol. 51

Issue (10): 1288-1296 DOI: 10.11900/0412.1961.2015.00338

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MODELING AND SIMULATION OF DIRECTIONAL SOLIDIFICATION BY LMC PROCESS FOR NICKEL BASE SUPERALLOY CASTING

Xuewei YAN¹,Ning TANG¹,Xiaofu LIU²,Guoyan SHUI²,Qingyan XU¹(

),Baicheng LIU¹

1 Key Laboratory for Advanced Materials Processing Technology, Ministry of Education, School of Materials Science and Engineering, Tsinghua University, Beijing 100084
2 Shenyang Research Institute of Foundry, Shenyang 110022

Cite this article:

Xuewei YAN,Ning TANG,Xiaofu LIU,Guoyan SHUI,Qingyan XU,Baicheng LIU. MODELING AND SIMULATION OF DIRECTIONAL SOLIDIFICATION BY LMC PROCESS FOR NICKEL BASE SUPERALLOY CASTING. Acta Metall Sin, 2015, 51(10): 1288-1296.

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Key words: liquid-metal cooling mathematical model directional solidification numerical simulation

Fund: Supported by National Basic Research Program of China (No.2011CB706801), National Natural Science Foundation of China (Nos.51171089 and 51374137) and National Science and Technology Major Projects of China (Nos.2012ZX04012-011 and 2011ZX04014-052)

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	Xuewei YAN
	Ning TANG
	Xiaofu LIU
	Guoyan SHUI
	Qingyan XU
	Baicheng LIU

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https://www.ams.org.cn/EN/10.11900/0412.1961.2015.00338 OR https://www.ams.org.cn/EN/Y2015/V51/I10/1288

Fig.1 Simplified schematic of liquid-metal cooling (LMC) directional solidification furnace

Fig.2 Three dimensional model of sample casting and shell mold

Fig.3 Simulation and experimental results of cooling curves

Fig.4 Simulation and experimental results of cooling rates

Fig.5 Simulation (a, c) and experimental (b, d) results of grain growth in outer side of sample at withdrawal rates of 6 mm/min (a, b) and 8 mm/min (c, d)

Fig.6 Simulation (a, c) and experimental (b, d) results of grain growth in inner side of sample at withdrawal rates of 6 mm/min (a, b) and 8 mm/min (c, d)

Fig.7 Change of mushy zone curvature along with the height of the solid/liquid (S/L) interface at different withdrawal rates

Fig.8 Change of initial mushy zone at 24 mm/min withdrawal rate

Fig.9 Simulation results of primary dendrite arm space l₁ at 8 mm/min withdrawal rate

Fig.10 Simulationand experimental results of l₁ at 8 mm/min withdrawal rate

Fig.11 Simulationresult of secondary dendrite arm space l₂ at 8 mm/min withdrawal rate

Fig.12 Simulation and experimental results of l₂ at 8 mm/min withdrawal rate

Fig.13 Cross section dendritic structures at withdrawal rates of 9 mm/min (a), 12 mm/min (b) and 15 mm/min (c)

Fig.14 Simulation (a) and experimental (b) results at 12 mm/min withdrawal rate

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