Effects of current path on structure and segregation during electroslag remelting process of Inconel 718 alloy with same power input

doi:10.1007/s42243-021-00690-3

	Effects of current path on structure and segregation during electroslag remelting process of Inconel 718 alloy with same power input
	Liu, Fu-bin 2; Cao, Hai-bo 1; Li, Hua-bing 2,3; Jiang, Zhou-hua 2,3; Geng, Xin 2
刊名	JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL
	2021-11-24
关键词	Electroslag remelting Current path Structure Segregation Inconel 718 alloy Current-conductive mold
ISSN号	1006-706X
DOI	10.1007/s42243-021-00690-3
通讯作者	Li, Hua-bing(huabing_li@163.com) ; Jiang, Zhou-hua(jiangzh@smm.neu.edu.cn)
英文摘要	Current-conductive mold was recently developed to extend electroslag remelting (ESR) functions to overcome some solidification defects by changing the current path. The macrostructures, microstructures, macrosegregation, and microsegregation of the Inconel 718 ingots produced by the custom laboratory-scale ESR furnace under different current paths (the classical ESR and the single power, and two circuits ESR process with current-conductive mold (ESR-STCCM)) with the same power input were compared and investigated. The results indicate that when the ingot was produced during ESR and ESR-STCCM processes, at the same power input, the pool depth was 104 and 90 mm, respectively. A flatter and shallower molten pool was obtained during ESR-STCCM process. Moreover, compared with a classical ESR ingot, the cooling rate of the centerline of ESR-STCCM ingot was increased from 12.7 to 16.7 K min(-1). The increased cooling rates caused by decreased melting rate and thinner slag skin reduced the growth angle of columnar crystal to the vertical axis and the secondary dendrite arm spacing. Furthermore, the macrosegregation and microsegregation of segregation elements for ESR-STCCM process were dramatically reduced compared with ESR process. The average volume fraction of Laves phase was reduced from 7.39% to 6.14%, and the segregation of Nb in Laves phase was significantly reduced.
资助项目	National Natural Science Foundation of China[51674070] ; National Natural Science Foundation of China[51874085] ; National Natural Science Foundation of China[U1435205] ; Transformation Project of Major Scientific and Technological Achievements in Shenyang[Z17-5-003] ; ``Innovation & Entrepreneurship Talents'' Introduction Plan of Jiangsu Province
WOS关键词	2-CIRCUIT ESR PROCESS ; SINGLE-POWER ; COOLING RATE ; FLUID-FLOW ; MODELS
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000721668500001
资助机构	National Natural Science Foundation of China ; Transformation Project of Major Scientific and Technological Achievements in Shenyang ; ``Innovation & Entrepreneurship Talents'' Introduction Plan of Jiangsu Province
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/126490]
专题	中国科学院合肥物质科学研究院
通讯作者	Li, Hua-bing; Jiang, Zhou-hua
作者单位	1.Chinese Acad Sci, Inst Nucl Energy Safety Technol, Key Lab Neutron & Radiat Safety, Hefei 230031, Anhui, Peoples R China 2.Northeastern Univ, Sch Met, Shenyang 110819, Liaoning, Peoples R China 3.Northeastern Univ, State Key Lab Rolling & Automat, Shenyang 110819, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Liu, Fu-bin,Cao, Hai-bo,Li, Hua-bing,et al. Effects of current path on structure and segregation during electroslag remelting process of Inconel 718 alloy with same power input[J]. JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL,2021.
APA	Liu, Fu-bin,Cao, Hai-bo,Li, Hua-bing,Jiang, Zhou-hua,&Geng, Xin.(2021).Effects of current path on structure and segregation during electroslag remelting process of Inconel 718 alloy with same power input.JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL.
MLA	Liu, Fu-bin,et al."Effects of current path on structure and segregation during electroslag remelting process of Inconel 718 alloy with same power input".JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL (2021).