Microsegregation of a new Ni-Co-based superalloy prepared by electron beam smelting layered solidification technology and its homogenization behavior

doi:10.1016/j.matchar.2021.111668

IMR OpenIR

	Microsegregation of a new Ni-Co-based superalloy prepared by electron beam smelting layered solidification technology and its homogenization behavior
	Cui, Hongyang 1,2; Tan, Yi 1,2; Bai, Rusheng 1,2; Li, Yi 1,2; Zhuang, Xinpeng 1,2; Chen, Ziang 1,2; You, Xiaogang 1,2,3; Li, Pengting 1,2; Cui, Chuanyong 4
通讯作者	Tan, Yi(lnsolar@dlut.edu.cn) ; You, Xiaogang() ; Li, Pengting()
	2022-02-01
发表期刊	MATERIALS CHARACTERIZATION
ISSN	1044-5803
卷号	184 页码:10
摘要	The electron beam smelting layered solidification technology (ER S-LST) is put forward to fabricate a new Ni-Cobased superalloy with less segregation. The microstructures and homogenization behavior of the prepared ingot were studied. The experimental results show that the cross-sectional microstructure of the EBS-LST alloy consists of four typical areas, namely melted zone (MZ), partially fusion zone (PFZ), heat affected zone (HAZ), and bottom layer (BL). During the EBS-LST solidification process, the cooling rate is calculated to be 22.3 k/s according to the well-established model associated with secondary dendrite arm spacing. It can be inferred that the EBS-LST will reduce the solidification time, and thus eliminating the macrosegregation, and weaken the microsegregation of the ingot effectively. The effect of homogenization treatment on the microsegregation and microstructure evolution of the alloy is also studied. The residual segregation index equation during homogenization is constructed for the diffusion behavior of the strongly segregated elements of Ti and W. The diffusion coefficients D-W and D-Ti are calculated as 3.9 x 10(-15) m(2).s(-1) and 5.4 x 10(-15) m(2).s(-1), respectively.
关键词	Electron beam smelting Layered solidification Ni-Co-based superalloy Homogenization behavior
资助者	National Key Research and Development Program of China ; National Natural Science Foundation of China ; Innovation Team Project for Key Fields of Dalian
DOI	10.1016/j.matchar.2021.111668
收录类别	SCI
语种	英语
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] ; National Natural Science Foundation of China[52004051] ; Innovation Team Project for Key Fields of Dalian[2019RT13]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science, Characterization & Testing
WOS记录号	WOS:000736670400003
出版者	ELSEVIER SCIENCE INC
引用统计	被引频次：29[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/321006/173773
专题	中国科学院金属研究所
通讯作者	Tan, Yi; You, Xiaogang; Li, Pengting
作者单位	1.Dalian Univ Technol, Sch Mat Sci & Engn, Key Lab Mat Modificat Laser Ion & Electron Beams, Minist Educ, 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	Cui, Hongyang,Tan, Yi,Bai, Rusheng,et al. Microsegregation of a new Ni-Co-based superalloy prepared by electron beam smelting layered solidification technology and its homogenization behavior[J]. MATERIALS CHARACTERIZATION,2022,184:10.
APA	Cui, Hongyang.,Tan, Yi.,Bai, Rusheng.,Li, Yi.,Zhuang, Xinpeng.,...&Cui, Chuanyong.(2022).Microsegregation of a new Ni-Co-based superalloy prepared by electron beam smelting layered solidification technology and its homogenization behavior.MATERIALS CHARACTERIZATION,184,10.
MLA	Cui, Hongyang,et al."Microsegregation of a new Ni-Co-based superalloy prepared by electron beam smelting layered solidification technology and its homogenization behavior".MATERIALS CHARACTERIZATION 184(2022):10.