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Preferential Co partitioning to α-Fe in nanocrystalline CoFeNbB alloys by Mn addition

Abstract:
Influence of Mn addition on the microstructure and hyperfine parameters of amorphous and nanocrystalline Co(FeMn)NbB alloys has been studied. Although Mn addition does not yield significant differences in crystallization kinetics and in the phases formed after each transformation, it seriously affects the partitioning of Co during nanocrystallization. Whereas for Mn free alloy Co is homogeneously distributed throughout the amorphous matrix and the nanocrystals, in Mn containing alloy Co is enriched in the α-FeCo nanocrystals. This fact prevents the exhaustion in Fe of the amorphous matrix and the crystalline volume fraction achieved at the end of nanocrystallization in the case of Mn containing alloy is ∼20% higher than in the Mn free alloy. © 2008 Elsevier B.V. All rights reserved.

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Publisher copy:
10.1016/j.jnoncrysol.2008.10.017

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Journal:
Journal of Non-Crystalline Solids More from this journal
Volume:
355
Issue:
2
Pages:
109-113
Publication date:
2009-01-15
DOI:
ISSN:
0022-3093


Pubs id:
pubs:178686
UUID:
uuid:cdbcec92-373b-4469-8183-3371b43c8579
Local pid:
pubs:178686
Source identifiers:
178686
Deposit date:
2013-02-20

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