Microsegregation of a new Ni-Co-based superalloy prepared through electron beam smelting and its treatment

doi:10.1016/j.jmrt.2020.03.068

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	Microsegregation of a new Ni-Co-based superalloy prepared through electron beam smelting and its treatment
	Zhuang, Xinpeng 1,2; Tan, Yi 1,2; Zhao, Longhai 1,2; You, Xiaogang 1,2,3; Li, Pengting 1,2; Cui, Chuanyong 4
刊名	JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
	2020-05-01
卷号	9 期号:3 页码:5422-5430
关键词	Electron beam smelting Ni-Co-based superalloy Segregation Homogenization
ISSN号	2238-7854
DOI	10.1016/j.jmrt.2020.03.068
通讯作者	Li, Pengting(ptli@dlut.edu.cn)
英文摘要	A new Ni-Co-based superalloy was prepared through electron beam smelting (hereinafter referred to as EBS Ni-Co superalloy). The microstructure and element distribution of the superalloy were characterized through optical microscopy (OM), scanning electron microscopy (SEM), and electron probe microanalysis (EPMA). Results show that the secondary dendrite arm spacings of the middle and upper parts of the ingot were 36.7 and 28.7 mu m, respectively. Ti and W were seriously segregated into the interdendritic and dendritic core regions with the segregation coefficients of 0.60 and 1.49, respectively. Various precipitated phase, including (gamma-gamma') eutectic, eta phase, MC type carbide, Ce-rich phase, and Zr-rich phase precipitated in the interdendritic regions. Furthermore, the homogenization of the EBS Ni-Co superalloy has been studied at 1140 degrees C. Segregation nearly eliminated after 40 h homogenization at 1140 degrees C because of the high diffusion coefficient of alloying elements. (C) 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
资助项目	National Key Research and Development Program of China[2019YFA0705300] ; National Natural Science Foundation of China[91860123] ; National Natural Science Foundation of China[51974057] ; Fundamental Research Funds for the Central Universities[DUT18ZD206] ; China Postdoctoral Science Foundation[ZX20190056]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000547379700016
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; China Postdoctoral Science Foundation
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/139653]
专题	金属研究所_中国科学院金属研究所
通讯作者	Li, Pengting
作者单位	1.Dalian Univ Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Mat Modificat Laser Ion & Elect Beams, Dalian 116024, Peoples R China 2.Key Lab Energy Beam Met & Adv Mat Preparat Liaoni, Dalian 116024, Peoples R China 3.Dalian Univ Technol, Sch Energy & Power Engn, Dalian 116024, Peoples R China 4.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	Zhuang, Xinpeng,Tan, Yi,Zhao, Longhai,et al. Microsegregation of a new Ni-Co-based superalloy prepared through electron beam smelting and its treatment[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2020,9(3):5422-5430.
APA	Zhuang, Xinpeng,Tan, Yi,Zhao, Longhai,You, Xiaogang,Li, Pengting,&Cui, Chuanyong.(2020).Microsegregation of a new Ni-Co-based superalloy prepared through electron beam smelting and its treatment.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,9(3),5422-5430.
MLA	Zhuang, Xinpeng,et al."Microsegregation of a new Ni-Co-based superalloy prepared through electron beam smelting and its treatment".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 9.3(2020):5422-5430.