Compaction of Fe₈₅Nb₅B₁₀ and Fe₇₅Nb₁₀B₁₅ powders obtained by mechanical alloying in a Spex mill was performed under isostatic conditions at 7.7 GPa at different temperatures (823, 973 and 1273 K). Quality of compaction, microstructure, thermal stability and magnetic properties were studied using different techniques: scanning and transmission electron microscopy, X-ray diffraction, differential scanning calorimetry and vibrating sample magnetometry. The as-milled powder of the alloy with 5 at. % Nb exhibits two phases:  bcc‑Fe(Nb,B) nanocrystals (~10 nm) and almost pure B inclusions (~100 nm). However, in the case of the alloy with 10 at. % Nb, an amorphous phase is also observed. The presence of this phase enhances the quality of compaction. Compaction at 823 K preserves both microstructure and magnetic properties of the as-milled powder in both alloys. Compaction at 973 K affects mainly the crystalline fraction of the alloy with 10 at. % Nb. Compaction at 1073 K yields the formation of bcc-Nb and fcc-Fe₂₃B₆ type crystals which magnetically harden the material.

• Legal notice:
  

  Copyright (c) Pielaszek Research, all rights reserved.
  The above materials, including auxiliary resources, are subject to Publisher's copyright and the Author(s) intellectual rights. Without limiting Author(s) rights under respective Copyright Transfer Agreement, no part of the above documents may be reproduced without the express written permission of Pielaszek Research, the Publisher. Express permission from the Author(s) is required to use the above materials for academic purposes, such as lectures or scientific presentations.
  In every case, proper references including Author(s) name(s) and URL of this webpage: https://science24.com/paper/19193 must be provided.

1. "Magnetically soft nanomaterials for high-temperature applications"
2. Amorphous Al₆₀Fe₂₀Ti₂₀ alloy obtained by consolidation of mechanically alloyed powder
3. Nanocrystallization kinetics under instantaneous growth approximation: experiments and cellular automata simulations
4. Influence of Mn on the magnetocaloric effect in Nanoperm-type alloys
5. Formation and properties of the Cu-Zr-Ag-Ti bulk metallic glasses
6. Bulk nanocrystalline Al-Si-Fe-mischmetal (Mm) alloys produced by high pressure hot compaction
7. Amorphous Ni₅₉Zr₂₀Ti₁₆M₅ (M = Cu, Ag) alloys obtained by melt spinning and mechanical alloying
8. Influence of Fe and Ag addition on the amorphization and thermal stability of CuTiZrNi powders processed by mechanical alloying
9. Nanocrystalline Ni₃Al-based alloys produced by mechanical alloying of Ni-Al-Co powders and consolidation
10. An attempt to improve the soft magnetic properties of iron-based bulk metallic glasses by annealing
11. Influence of high presure hot compaction on microstructure of Al-Si-Ni-Mm alloys
12. Phase transformations during mechanical alloying of nickel aluminides and subsequent heating of milling product
13. Phase transformations in M2 steel powders subjected to ball milling
14. Dependence of microhardness on annealing time of amorphous Al-Mm-Ni-(Fe,Co) alloys
15. Bulk nanostructured Al-Mm-Ni-(Fe,Co) alloys produced by high-pressure hot compaction of amorphous powders
16. Crystallization kinetics of Al95-x-yMmxNi5(Co,Fe)y series (x = 4, 5; y = 2, 3)
17. Amorphous bulk alloys from Al-Mm-Ni system