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Title: Nanostructured FeZrCuB alloys prepared by mechanosynthesis

Abstract

Nanostructured Fe{sub 84}Zr{sub 9}B{sub 6}Cu{sub 1} alloys were prepared by the mechanosynthesis method, following two alternative routes. In the first procedure, the alloy was directly obtained from the milling of the powder mixture of all elemental components. The resulting alloy was partially nanocrystalline, with dispersion of nanograins in an amorphous matrix. In the second route, Cu and B elemental powders were progressively added to a previously milled Fe{sub 90}Zr{sub 10} alloy. A nearly single amorphous phase was consequently obtained. The dispersion of nanograins was easily recovered in this case, after annealing the milled alloy. The hyperfine magnetic properties of the amorphous phase prepared by milling were comparable to those found in similar melt-spun alloys. The crystallization temperatures and activation energies, associated with the first and second crystallization stages, were found to be lower for the milled alloy when compared with the corresponding melt-spun alloy, an effect associated with the larger number of defects induced by the mechanosynthesis process.

Authors:
; ; ; ;  [1]
  1. Departamento de Fisica, Universidade Federal do Espirito Santo, 29075-910, Vitoria, Espirito Santo (Brazil)
Publication Date:
OSTI Identifier:
21057472
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 102; Journal Issue: 3; Other Information: DOI: 10.1063/1.2768009; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ACTIVATION ENERGY; AMORPHOUS STATE; ANNEALING; BORON ALLOYS; COPPER ALLOYS; CRYSTALLIZATION; CRYSTALS; FERROMAGNETIC MATERIALS; INTERMETALLIC COMPOUNDS; IRON ALLOYS; MAGNETIC PROPERTIES; MILLING; NANOSTRUCTURES; POWDERS; ZIRCONIUM ALLOYS

Citation Formats

Pereira, R D, Passamani, E C, Larica, C, Freitas, J C. C., and Takeuchi, A Y. Nanostructured FeZrCuB alloys prepared by mechanosynthesis. United States: N. p., 2007. Web. doi:10.1063/1.2768009.
Pereira, R D, Passamani, E C, Larica, C, Freitas, J C. C., & Takeuchi, A Y. Nanostructured FeZrCuB alloys prepared by mechanosynthesis. United States. https://doi.org/10.1063/1.2768009
Pereira, R D, Passamani, E C, Larica, C, Freitas, J C. C., and Takeuchi, A Y. 2007. "Nanostructured FeZrCuB alloys prepared by mechanosynthesis". United States. https://doi.org/10.1063/1.2768009.
@article{osti_21057472,
title = {Nanostructured FeZrCuB alloys prepared by mechanosynthesis},
author = {Pereira, R D and Passamani, E C and Larica, C and Freitas, J C. C. and Takeuchi, A Y},
abstractNote = {Nanostructured Fe{sub 84}Zr{sub 9}B{sub 6}Cu{sub 1} alloys were prepared by the mechanosynthesis method, following two alternative routes. In the first procedure, the alloy was directly obtained from the milling of the powder mixture of all elemental components. The resulting alloy was partially nanocrystalline, with dispersion of nanograins in an amorphous matrix. In the second route, Cu and B elemental powders were progressively added to a previously milled Fe{sub 90}Zr{sub 10} alloy. A nearly single amorphous phase was consequently obtained. The dispersion of nanograins was easily recovered in this case, after annealing the milled alloy. The hyperfine magnetic properties of the amorphous phase prepared by milling were comparable to those found in similar melt-spun alloys. The crystallization temperatures and activation energies, associated with the first and second crystallization stages, were found to be lower for the milled alloy when compared with the corresponding melt-spun alloy, an effect associated with the larger number of defects induced by the mechanosynthesis process.},
doi = {10.1063/1.2768009},
url = {https://www.osti.gov/biblio/21057472}, journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 3,
volume = 102,
place = {United States},
year = {Wed Aug 01 00:00:00 EDT 2007},
month = {Wed Aug 01 00:00:00 EDT 2007}
}