Effect of rare earth elements (Y, Ce) on microstructure of K418 Ni-base superalloy

doi:10.11868/j.issn.1001-4381.2016.03.008

	Effect of rare earth elements (Y, Ce) on microstructure of K418 Ni-base superalloy
	Jin, Yu-Hua; Han, Ping-Hua; Li, Chang-Feng; Kou, Sheng-Zhong
刊名	Cailiao Gongcheng/Journal of Materials Engineering
	2016-03-20
卷号	44 期号:3 页码:46-51
关键词	Carbides Defects Eutectics Melting furnaces Microstructure Morphology Rare earth elements Rare earths Superalloys Vacuum applications Vacuum furnaces Dendritic structures Effect mechanism Eutectic phase High vacuum K418 superalloys Morphology of carbides Ni-base superalloys Pore defects
ISSN号	10014381
DOI	10.11868/j.issn.1001-4381.2016.03.008
英文摘要	K418 Ni-base superalloy was melted in high vacuum arc-melting furnace. The microstructure was observed by using SEM, the phase composition was detected by EDS. The effect of with rare earth elements on pore defects, γ' phase and eutectic phase of the alloy was studied and the effect mechanism was analyzed. The results show that the pore defects of the alloy decrease with the addition of rare earth elements, the density increases, the dendritic structure is refined. The morphology of carbides in alloy turns from bulk into chain and small pieces, the γ' phase in alloy with the addition of rare earth elements becomes smaller in size and much more in numbers. The eutectic phase(γ+γ') volume remarkably increases with the addition of Y, however the eutectic phase volume increases more obviously if two rare earth elements Y, Ce are added simultaneously. © 2016, Beijing Institute of Aeronautical Materials (BIAM). All right reserved.
语种	中文
出版者	Beijing Institute of Aeronautical Materials (BIAM)
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/112544]
专题	材料科学与工程学院
作者单位	State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Jin, Yu-Hua,Han, Ping-Hua,Li, Chang-Feng,et al. Effect of rare earth elements (Y, Ce) on microstructure of K418 Ni-base superalloy[J]. Cailiao Gongcheng/Journal of Materials Engineering,2016,44(3):46-51.
APA	Jin, Yu-Hua,Han, Ping-Hua,Li, Chang-Feng,&Kou, Sheng-Zhong.(2016).Effect of rare earth elements (Y, Ce) on microstructure of K418 Ni-base superalloy.Cailiao Gongcheng/Journal of Materials Engineering,44(3),46-51.
MLA	Jin, Yu-Hua,et al."Effect of rare earth elements (Y, Ce) on microstructure of K418 Ni-base superalloy".Cailiao Gongcheng/Journal of Materials Engineering 44.3(2016):46-51.