Freckle Formation Tendency of a Single-Crystal Nickel-based Superalloy with Minor Carbon Additions

doi:10.1007/s11665-024-10554-y

IMR OpenIR

	Freckle Formation Tendency of a Single-Crystal Nickel-based Superalloy with Minor Carbon Additions
	Jiang, Weiguo 1,2; Dong, Lin 1,2; Li, Kaiwen 3
通讯作者	Jiang, Weiguo(jwg@wfust.edu.cn)
	2024-12-17
发表期刊	JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
ISSN	1059-9495
页码	11
摘要	The freckle formation tendencies of single-crystal superalloys with minor amounts of carbon were investigated. Carbon addition resulted in TaC-type carbide (MC) precipitation earlier than the eutectic phase in the interdendritic region, which induced Ta depletion and resulted in increases in the W and Re contents in the eutectic. The weakened density imbalance between the interdendritic region liquid in the mushy zone and the melted bulk liquid prohibits convection flow. Additionally, as the amount of carbon intentionally added to the superalloy increases, the volume fraction of the eutectic in the superalloy decreases, and the MC changes from a blocky to script-like shape in the interdendritic region. A lower volume fraction of the eutectic phase and the script-like carbide network can depress thermosolutal convection in the interdendritic region in the longitudinal direction. For these reasons, the freckle formation tendency decreased. As the carbon content of superalloys increases, the Rayleigh number decreases, resulting in a decrease in freckle formation. The Rayleigh criterion can be used to evaluate freckle formation tendency.
关键词	carbon content directional solidification freckle tendency single-crystal superalloy
资助者	Natural Science Foundation of Shandong Province, China
DOI	10.1007/s11665-024-10554-y
收录类别	SCI
语种	英语
资助项目	Natural Science Foundation of Shandong Province, China[ZR2022ME066]
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:001379455400001
出版者	SPRINGER
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/181165
专题	中国科学院金属研究所
通讯作者	Jiang, Weiguo
作者单位	1.Weifang Univ Sci & Technol, Shouguang 262700, Shandong, Peoples R China 2.Weifang Key Lab High Temp Mat & Single Crystal Com, Shouguang 262700, Shandong, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Jiang, Weiguo,Dong, Lin,Li, Kaiwen. Freckle Formation Tendency of a Single-Crystal Nickel-based Superalloy with Minor Carbon Additions[J]. JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE,2024:11.
APA	Jiang, Weiguo,Dong, Lin,&Li, Kaiwen.(2024).Freckle Formation Tendency of a Single-Crystal Nickel-based Superalloy with Minor Carbon Additions.JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE,11.
MLA	Jiang, Weiguo,et al."Freckle Formation Tendency of a Single-Crystal Nickel-based Superalloy with Minor Carbon Additions".JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE (2024):11.