Abstract
Local atomic structures in amorphous Fe70M10B20 (M = Cr, W, Nb, Zr and Hf) alloys with different ΔTx values were studied by the ordinary X-ray diffraction, anomalous X-ray scattering and EXAFS methods. Their local the atomic structures basically resemble each other, i.e. a random network structure of triangular prisms. Only difference in local atomic structure is a shape of the local structural unit. In the amorphous alloys containing M elements larger than Fe atoms, the prisms show distorted shapes due to a size difference Δr between M and Fe. A linear relation between Δr and ΔTx, and a comparison of their crystallization processes suggest us that their thermal stability is attributed to difficulty in rearranging the irregular structural units because of a non-zero Δr value.
Original language | English |
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Pages (from-to) | 1530-1534 |
Number of pages | 5 |
Journal | Materials Transactions |
Volume | 42 |
Issue number | 8 |
DOIs | |
Publication status | Published - 2001 |
Keywords
- Anomalous X-ray scattering method
- Crystallization
- Extended X-ray absorption fine structure (EXAFS) local atomic structure
- Iron-based bulk amorphous alloy
- Thermal stability
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering