Microstructure and magnetostriction of Tb0.3 Dy0.7Fe1.95-xNbx (x=0, 0.03, 0.06, 0.09) alloys

	Microstructure and magnetostriction of Tb0.3 Dy0.7Fe1.95-xNbx (x=0, 0.03, 0.06, 0.09) alloys
	Li, Xiaocheng 1; Ding, Yutian 1,2; Hu, Yong 1,2
刊名	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
	2012-11-01
卷号	41 期号:11 页码:2045-2048
关键词	Binary alloys Crystal structure Dysprosium alloys Magnetostriction Melting furnaces Microstructure Niobium Rare earths Rhenium alloys Terbium alloys Ternary alloys Vacuum applications Vacuum furnaces Cubic laves phase Laves phasis Low concentrations Matrix phase Nb addition Paramagnetic phasis Primary phase Tb-Dy-Fe alloys
ISSN号	1002185X
英文摘要	The Tb0.3Dy0.7 Fe1.95-xNbx(x=0, 0.03, 0.06, 0.09) alloys were prepared by a high-vacuum arc melting furnace. The crystal structure, microstructure and magnetostriction of the alloys were studied. Results demonstrate that after Nb addition the matrix phase of the Tb0.3Dy0.7 Fe1.95-xNbx(x=0.03,0.06, 0.09) alloys consists predominantly of the cubic Laves phase with MgCu2(C15-type) structure, and the lattice parameter of the Laves phase in the alloys is least affected. Nb is soluble negligibly in the matrix RFe2 and Re-rich phases, but dissolved in the RFe3 phase and formed into Re(Nb, Fe)3 phase when x=0.03. The formation of the NbFe2 phase as the primary phase make the solidifying liquid become rich in rare earths and suppress the formation of the deleterious RFe3phase. The hexagonal C14-type Laves phase NbFe2 does not dissolve into the matrix RFe2(C15-type) phase. The concentration of the element Nb affects the magnetostriction significantly. The improvement in magnetostriction is maximum for the element-added alloy with a low concentration of the element Nb (x=0.03) as compared to the parent alloy Tb0.3 Dy0.7Fe1.95. However, the decrease in magnetostriction occurs with the increasing of Nb content which is due to the formation of paramagnetic phases NbFe2 and Re-rich phases. Whereas the magnetostriction has a little improvement as compared to the parent alloy Tb0.3 Dy0.7Fe1.95.
语种	中文
出版者	Rare Metals Materials and Engineering Press
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/111079]
专题	材料科学与工程学院省部共建有色金属先进加工与再利用国家重点实验室
作者单位	1.State Key Laboratory of Gansu Advanced Nonferrous Metal Materials, Lanzhou University of Technology, Lanzhou 730050, China; 2.Wenzhou Pump and Valve Engineering Research Institute, Lanzhou University of Technology, Wenzhou 325105, China
推荐引用方式 GB/T 7714	Li, Xiaocheng,Ding, Yutian,Hu, Yong. Microstructure and magnetostriction of Tb0.3 Dy0.7Fe1.95-xNbx (x=0, 0.03, 0.06, 0.09) alloys[J]. Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering,2012,41(11):2045-2048.
APA	Li, Xiaocheng,Ding, Yutian,&Hu, Yong.(2012).Microstructure and magnetostriction of Tb0.3 Dy0.7Fe1.95-xNbx (x=0, 0.03, 0.06, 0.09) alloys.Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering,41(11),2045-2048.
MLA	Li, Xiaocheng,et al."Microstructure and magnetostriction of Tb0.3 Dy0.7Fe1.95-xNbx (x=0, 0.03, 0.06, 0.09) alloys".Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering 41.11(2012):2045-2048.