Development of Fe-based nanocrystalline materials by mechanical alloying

Authors

  • J. J. Suñol GRMT, Dept. de Física. Universitat de Girona
  • A. González GRMT, Dept. de Física. Universitat de Girona
  • L. Escoda GRMT, Dept. de Física. Universitat de Girona
  • M. T. Mora GFM I, Dept. de Física. Universitat Autònoma de Barcelona

DOI:

https://doi.org/10.3989/revmetalm.2008.v44.i3.109

Keywords:

Fe-based alloys, Mechanical alloying, Nanocrystalline alloys

Abstract


Two alloys, Fe80NbB10 and Fe70Ni14Zr6B10, were produced by mechanical alloying. The formation of the nanocrystallites (about 7-8 nm at 80h MA) was detected by X-ray diffraction. After milling for 80 h, differential scanning calorimetry scans show low-temperature recovery processes and several crystallization processes related with crystal growth and reordering of crystalline phases. The apparent activation energy values are 315 ± 40 kJ mol–1 for alloy A, and 295 ± 20 kJ mol–1 and 320 ± 25 kJ mol–1 for alloy B. Furthermore, a melt-spun Fe-based ribbon was mechanically alloyed to obtain a powdered-like alloy. The increase of the rotation speed and the ball-to-powder weight ratio reduces the necessary time to obtain the powdered form.

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Published

2008-06-30

How to Cite

Suñol, J. J., González, A., Escoda, L., & Mora, M. T. (2008). Development of Fe-based nanocrystalline materials by mechanical alloying. Revista De Metalurgia, 44(3), 216–221. https://doi.org/10.3989/revmetalm.2008.v44.i3.109

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