Heat Transfer Model of Directional Solidification by LMC Process for Superalloy Casting Based on Finite Element Method

IMR OpenIR

	Heat Transfer Model of Directional Solidification by LMC Process for Superalloy Casting Based on Finite Element Method
	Cao, L; Liao, DM; Lu, YZ; Chen, T; Lu, YZ (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China.
	2016-09-01
发表期刊	METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
ISSN	1073-5623
卷号	47A 期号:9 页码:4640-4647
摘要	With the rapid development of the aviation industry, the turbine blade, a critical component of the aeronautical engine, has come to be widely produced by liquid-metal cooling (LMC) process. A temperature- and time-dependent heat transfer coefficient was used to represent the heat convection between the shell and the cooling liquid, and an improved Monte Carlo ray-tracing approach was adopted to handle the boundary of radiation heat transfer. Unstructured mesh was used to fit the irregular shell boundary, and the heat transfer model of directional solidification by LMC process based on finite element method (FEM) was established. The concept of local matrix was here proposed to guarantee computational efficiency. The pouring experiments of directional solidification by LMC process were carried out, then simulation and experimental results were compared here. The accuracy of the heat transfer model was validated by the cooling curves and grain morphology, and the maximum relative error between simulation and experimental cooling curve was 2 pct. The withdrawal rate showed an important influence on the shape of solidification interface, and stray grain is liable to be generated on the bottom of platform at an excessive withdrawal rate.
部门归属	[lu, yuzhang] chinese acad sci, inst met res, shenyang 110016, liaoning, peoples r china ; [cao, liu ; liao, dunming ; chen, tao] hust, state key lab mat proc & mould technol, wuhan 430074, hubei, peoples r china
学科领域	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
资助者	Program for New Century Excellent Talents in University [NCET-13-0229, NCET-09-0396]; National Science & Technology Key Projects of Numerical Control [2012ZX04010-031, 2012ZX0412-011]; National High Technology Research and Development Program ("863" Program) of China [2013031003]
收录类别	sci
语种	英语
WOS记录号	WOS:000380721600029
引用统计	被引频次：19[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/76291
专题	中国科学院金属研究所
通讯作者	Lu, YZ (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China.
推荐引用方式 GB/T 7714	Cao, L,Liao, DM,Lu, YZ,et al. Heat Transfer Model of Directional Solidification by LMC Process for Superalloy Casting Based on Finite Element Method[J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,2016,47A(9):4640-4647.
APA	Cao, L,Liao, DM,Lu, YZ,Chen, T,&Lu, YZ .(2016).Heat Transfer Model of Directional Solidification by LMC Process for Superalloy Casting Based on Finite Element Method.METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,47A(9),4640-4647.
MLA	Cao, L,et al."Heat Transfer Model of Directional Solidification by LMC Process for Superalloy Casting Based on Finite Element Method".METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE 47A.9(2016):4640-4647.