Effects of Zr addition on the microstructure and magnetostriction of the as cast Tb0.3Dy0.7Fe1.95 alloys

	Effects of Zr addition on the microstructure and magnetostriction of the as cast Tb0.3Dy0.7Fe1.95 alloys
	Li, Xiao-Cheng 2; Ding, Yu-Tian 1,2; Hu, Yong 1,2
刊名	Gongneng Cailiao/Journal of Functional Materials
	2011-12-01
卷号	42 期号:12 页码:2257-2260+2264
关键词	Alloys Cerium alloys Crystal microstructure Dysprosium alloys Magnetostriction Magnetostrictive devices Microstructure Rare earths Terbium Terbium alloys Zirconium Zirconium alloys As-cast Laves phasis Laves-phase Low concentrations matrix Matrix phase Primary phase Zr addition
ISSN号	10019731
英文摘要	The Tb0.3Dy0.7 Fe1.95-xZrx(x=0, 0.03, 0.06, 0.09) alloys were prepared by arc melting furnace. The crystal structure, microstructure and the magnetostriction of the Tb0.3Dy0.7 Fe1.95-xZrx(x=0, 0.03, 0.06, 0.09) alloys were studied. Results demonstrated that the matrix phase of the Tb0.3Dy0.7 Fe1.95-xZrx(x=0.03, 0.06, 0.09) alloys consisted predominantly of the cubic Laves phase with MgCu2(C15-type) structure. After Zr addition, the lattice parameter of the Laves phase in the alloys decreased by substituting rare earth elements Tb and Dy. The formation of the ZrFe2 phase as the primary phase made the solidifying liquid become rich in rare earths and suppressed the formation of the deleterious RFe3 phase. Zr was found to be limited soluble in the matrix RFe2 phase and negligible soluble in Re-rich phase. ZrFe2(C15-type) phase could dissolve into the RFe2 phase which crystal structure is C15-type and form the matrix (Re, Zr)Fe2 phase. The solubility of Zr in the matrix phase was found to be supersaturated (x=0.09), and Zr-rich phase formed as a new phase on the matrix (Re, Zr)Fe2 phase. The concentration of the element Zr affected the magnetostriction significantly. The improvement in magnetostriction was remarkably for the element Zr addition alloys with a low concentration as compared to the parent alloy Tb0.3Dy0.7Fe1.95. However, the decrease in magnetostriction at a higher concentration (x=0.09) was due to the formation of Zr-rich and Re-rich phases affecting magnetostriction. Whereas the magnetostriction had little improvement as compared to the parent alloy Tb0.3Dy0.7Fe1.95.
语种	中文
出版者	Journal of Functional Materials, P.O. Box 1512, Chongqing, 630700, China
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/111221]
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.Wenzhou Pump and Valve Engineering Research Institute, Lanzhou University of Technology, Wenzhou 325105, China 2.State Key Laboratory of Gansu Advanced Nonferrous Metal Materials, Lanzhou University of Technology, Lanzhou 730050, China;
推荐引用方式 GB/T 7714	Li, Xiao-Cheng,Ding, Yu-Tian,Hu, Yong. Effects of Zr addition on the microstructure and magnetostriction of the as cast Tb0.3Dy0.7Fe1.95 alloys[J]. Gongneng Cailiao/Journal of Functional Materials,2011,42(12):2257-2260+2264.
APA	Li, Xiao-Cheng,Ding, Yu-Tian,&Hu, Yong.(2011).Effects of Zr addition on the microstructure and magnetostriction of the as cast Tb0.3Dy0.7Fe1.95 alloys.Gongneng Cailiao/Journal of Functional Materials,42(12),2257-2260+2264.
MLA	Li, Xiao-Cheng,et al."Effects of Zr addition on the microstructure and magnetostriction of the as cast Tb0.3Dy0.7Fe1.95 alloys".Gongneng Cailiao/Journal of Functional Materials 42.12(2011):2257-2260+2264.