Artículo
Structure and magnetic properties of Fe–Nb–B amorphous/nanocrystalline alloys produced by compaction of mechanically alloyed powders
Autor/es | Conde Amiano, Alejandro
Ipus Bados, Jhon Jairo Blázquez Gámez, Javier Sebastián Franco García, Victorino Krasnowski, Marek Kulik, Tadeusz A. Lozano Pérez, S. |
Departamento | Universidad de Sevilla. Departamento de Física de la Materia Condensada |
Fecha de publicación | 2010 |
Fecha de depósito | 2016-01-22 |
Publicado en |
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Resumen | Mechanical alloying of Fe75Nb10B15 and Fe85Nb5B10 systems has been performed from an initial
mixture of elemental powders. A bcc supersaturated solid solution is developed during milling for
both alloys. However, Fe75Nb10B15 ... Mechanical alloying of Fe75Nb10B15 and Fe85Nb5B10 systems has been performed from an initial mixture of elemental powders. A bcc supersaturated solid solution is developed during milling for both alloys. However, Fe75Nb10B15 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 Fe23B6 phases, which magnetically harden the material. |
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