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Home  >  Journal list  >  MATERIALS TRANSACTIONS  >  Vol.43  No.8 (2002)  >  pp.1918-1920

MATERIALS TRANSACTIONS
<<Previous article Vol.43  No.8 (2002)   pp.1918 - 1920 Next article>>

Determination of Atomic Sites of Nb Dissolved in Metastable Fe23B6 Phase

Takahiro Nakamura1), Hisato Koshiba2), Muneyuki Imafuku3), Akihisa Inoue4) and Eiichiro Matsubara4)
1) Department of Materials Science, Tohoku University
2) Alps Electric Co.
3) Nippon Steel Corporation
4) Institute for Materials Research, Tohoku University


The primary metastable phase in the Fe70Nb10B20 amorphous alloy is the complex fcc Fe23B6 phase with a large lattice parameter. The atomic site of Nb atoms in this metastable phase was determined by the anomalous X-ray scattering (AXS) method. Nb atoms in the metastable phase located at the similar position expected in the local structural unit in the amorphous state. Thus, the precipitation of the metastable phase does not require long-distance diffusion of Nb atoms in the amorphous matrix.


Keyword:
iron-based bulk amorphous alloy, anomalous X-ray scattering method, local atomic structure, thermal stability, crystallization

Received: March 18, 2002
Accepted: May 29, 2002 , Published online: September 06, 2005
Copyright (c) 2005 The Japan Institute of Metals

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