Reaction of Ni-Based Superalloy with Liquid Sn During Liquid-Metal-Cooled Directional Solidification

doi:10.1007/s11661-018-4758-1

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	Reaction of Ni-Based Superalloy with Liquid Sn During Liquid-Metal-Cooled Directional Solidification
	Shen, J ; Xu, ZG ; Lu, YZ ; Zheng, W ; Lou, LH ; Zhang, J
刊名	METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
	2018-09-01
卷号	49A 期号:9 页码:4003-4011
ISSN号	1073-5623
DOI	10.1007/s11661-018-4758-1
英文摘要	The liquid metal cooling (LMC) process has attracted increasing attention in the investment casting industry in recent years. Liquid Sn is generally used as the cooling medium in state-of-the-art LMC processes even though Sn is known to be a detrimental element in Ni-based superalloys. Therefore, Sn contamination in superalloys has become one of the top concerns for the LMC process. In this work, the reaction between liquid Sn and a Ni-based superalloy was investigated. The detectable reaction between superalloy and liquid Sn began at approximately 500 degrees C, and the reaction products became complex with increasing temperature. At high temperatures beyond 750 degrees C, a very short contact period of less than 1 minute led to a severe surface reaction. The results were compared to the surface reaction zone of the large blade. The critical time when the superalloy casting contacted liquid Sn is obtained based on experimental observations and numerical simulations. The surface reaction will occur if the ceramic mold cracked at this point or previously. The surface contamination during LMC solidification is associated with the volume of the casting. The present results indicate that surface reaction would be avoided if the volume of the large blade is reduced to - 30 pct of the original size.
学科主题	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
语种	英语
WOS记录号	WOS:000440714700020
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/79989]
专题	金属研究所_中国科学院金属研究所
作者单位	1.[Shen, J. 2.Xu, Z. G. 3.Lu, Y. Z. 4.Zheng, W. 5.Lou, L. H. 6.Zhang, J.] Chinese Acad Sci, Inst Met Res, Superalloys Div, 72 Wenhua Rd, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Shen, J,Xu, ZG,Lu, YZ,et al. Reaction of Ni-Based Superalloy with Liquid Sn During Liquid-Metal-Cooled Directional Solidification[J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,2018,49A(9):4003-4011.
APA	Shen, J,Xu, ZG,Lu, YZ,Zheng, W,Lou, LH,&Zhang, J.(2018).Reaction of Ni-Based Superalloy with Liquid Sn During Liquid-Metal-Cooled Directional Solidification.METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,49A(9),4003-4011.
MLA	Shen, J,et al."Reaction of Ni-Based Superalloy with Liquid Sn During Liquid-Metal-Cooled Directional Solidification".METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE 49A.9(2018):4003-4011.