Effects of Nb on the precipitation of α-Fe, glass forming ability and magnetic properties of Fe85B10P5 alloys

被引:27
作者
Li, Xuelian [1 ]
Liu, Jinbao [1 ]
Qu, Changrong [1 ]
Song, Kaikai [1 ]
Wang, Li [1 ]
机构
[1] Shandong Univ Weihai, Sch Mech & Elect Engn, 180 Wenhuaxi Rd, Weihai 264209, Peoples R China
基金
中国国家自然科学基金;
关键词
Amorphous alloys; Soft magnetic property; Glass forming ability; Fe precipitates; AMORPHOUS-ALLOYS; METALLIC-GLASS;
D O I
10.1016/j.jallcom.2016.09.298
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The influence of Nb substitution for Fe on the precipitation of alpha-Fe, the glass forming ability (GFA) and the magnetic properties of the (Fe85-xB10P5Nbx) (x = 0,1, 3, 4 and 5 at.%) alloys are investigated. Based on the XRD measurement of the melt-spun ribbons, it is found that the dominant crystal plane in alpha-Fe precipitates gradually changes from (200) to (110) and then only broad peaks without any appreciable crystalline peaks can be observed with increasing Nb content from 0 at.% to 5 at.%. Such microstructural evolution are clarified with other elements M (M = Ni, Mo, Y, Cr and Si) addition, and can be well explained based on the Bravais-Friedel law and the negative mixing enthalpy between Nb(or M) and Fe (or B). Furthermore, the strong bonding between Nb and Fe atoms results in the formation of FeNb clusters and then enhances short-range-order clusters, leading to the enhance of GFA and decrease of coercive force from 13.82 A/m to 2.3 A/m with the addition of Nb content less than 4 at.%. With further increasing Nb content, the coercive force becomes higher, which is contributed to the formation of NbB clusters and the poor solute-solute avoidance. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码:643 / 646
页数:4
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