NIMTE OpenIR  > 2018专题
Whole process metallurgical behavior of the high-abundance rare-earth elements LRE (La, Ce and Y) and the magnetic performance of Nd0.75LRE0.25-Fe-B sintered magnets
Fan, Xiaodong; Ding, Guangfei; Chen, Kan; Guo, Shuai; You, Caiyin; Chen, Renjie; Lee, Don; Yan, Aru
2018
Source PublicationACTA MATERIALIA
Volume154Pages:343-354
AbstractBalanced usages of the high-abundance rare-earth elements, such as La, Ce and Y, have attracted tremendous interests of the industrial and scientific societies because of the economic and environmental merits. One of the key issues is of understanding the whole process metallurgical behavior of the high-abundance rare-earth elements in order to optimize the microstructures for a high magnetic performance of the RE-Fe-B sintered magnets, which contain a high concentration of the high-abundance rare-earth elements. In this work, we systematically characterized the metallurgical behaviors during the whole process of strip casting, sintering and annealing for the magnets (Nd0.25LRE0.25)(30.5)FebalAl0.1Cu0.1B1 (LRE = La, Ce and Y, wt. %). During the strip casting (SC), La and Ce mainly distribute in the grain boundary phase while Y distributes uniformly in the 2:14:1 matrix phase grains. Under the sintering and annealing, La is squeezed out from the 2:14:1 matrix phase to segregate in the grain boundaries, while Ce and Y migrate from the grain boundary to the 2:14:1 matrix phase. The crystalline structures of matrix phase and grain boundary phase of Nd-La/Ce/Y-Fe-B are tetragonal phase (space group P42/mnm) and hcp-Re2O3. The investigations of the grain boundary of Nd-La/Ce/Y-Fe-B magnets demonstrate that the grain boundary of the magnet with Ce is thicker than that of magnets with La and Y. The different metallurgical behaviors of elements La, Ce and Y are attributed to the different solidification temperature and substitution energy of Re2Fe14B phases. Core-shell grain structure was formed in the case of Y-containing magnets. Elemental analysis demonstrates that Y prefers to locate in the core of the grain boundary and Nd distributes in the shell of the grain boundary. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
Keywordb Permanent-magnets Fe-b Coercivity Enhancement Grain-boundary Nd Microstructure Alloys Substitution Ribbons
Subject AreaPolymer Science
Language英语
Document Type期刊论文
Identifierhttp://ir.nimte.ac.cn/handle/174433/17285
Collection2018专题
Recommended Citation
GB/T 7714
Fan, Xiaodong,Ding, Guangfei,Chen, Kan,et al. Whole process metallurgical behavior of the high-abundance rare-earth elements LRE (La, Ce and Y) and the magnetic performance of Nd0.75LRE0.25-Fe-B sintered magnets[J]. ACTA MATERIALIA,2018,154:343-354.
APA Fan, Xiaodong.,Ding, Guangfei.,Chen, Kan.,Guo, Shuai.,You, Caiyin.,...&Yan, Aru.(2018).Whole process metallurgical behavior of the high-abundance rare-earth elements LRE (La, Ce and Y) and the magnetic performance of Nd0.75LRE0.25-Fe-B sintered magnets.ACTA MATERIALIA,154,343-354.
MLA Fan, Xiaodong,et al."Whole process metallurgical behavior of the high-abundance rare-earth elements LRE (La, Ce and Y) and the magnetic performance of Nd0.75LRE0.25-Fe-B sintered magnets".ACTA MATERIALIA 154(2018):343-354.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Fan, Xiaodong]'s Articles
[Ding, Guangfei]'s Articles
[Chen, Kan]'s Articles
Baidu academic
Similar articles in Baidu academic
[Fan, Xiaodong]'s Articles
[Ding, Guangfei]'s Articles
[Chen, Kan]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Fan, Xiaodong]'s Articles
[Ding, Guangfei]'s Articles
[Chen, Kan]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.