Structure and magnetic properties of Fe-Nb-B amorphous/nanocrystalline alloys produced by compaction of mechanically alloyed powders

被引：8
|
作者：
Ipus, J. J. [1 ]
Blazquez, J. S. [1 ]
Franco, V. [1 ]
Conde, A. [1 ]
Krasnowski, M. [2 ]
Kulik, T. [2 ]
Lozano-Perez, S. [3 ]
机构：
[1] Univ Seville, ICMSE CSIC, Dept Fis Mat Condensada, E-41080 Seville, Spain
[2] Warsaw Univ Technol, Fac Mat Sci & Engn, PL-02507 Warsaw, Poland
[3] Univ Oxford, Dept Mat, Oxford OX1 3PH, England
来源：
JOURNAL OF APPLIED PHYSICS | 2010年 / 107卷 / 07期
关键词：
NANOCRYSTALLINE MATERIALS; EVOLUTION; PHASE; FIELD;
D O I：
10.1063/1.3319669
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Mechanical alloying of Fe(75)Nb(10)B(15) and Fe(85)Nb(5)B(10) systems has been performed from an initial mixture of elemental powders. A bcc supersaturated solid solution is developed during milling for both alloys. However, Fe(75)Nb(10)B(15) alloy also develops an amorphous phase, which amount increases with milling time. Milled powder samples were compacted at 7.7 GPa at different temperatures. Scanning electron microscopy images show that the presence of amorphous phase enhances the quality of compaction. Compaction at 823 K preserves both microstructure and magnetic properties of as-milled powders in both alloys. Compaction at 973 K affects mainly the crystalline fraction of the alloy with 10 at. % Nb. Compaction at 1273 K yields the formation of bcc Nb and fcc Fe(23)B(6) phases, which magnetically harden the material. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3319669]
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页数：6
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