Abstract
The α-Mn structure (A12) has been found above 1373 K as a new structure of Fe2VSi, which has the Heusler structure (L21) at room temperature. The Fe2VSi alloy with a single phase of the α-Mn structure was produced using the melt-quenching technique. When the sample was annealed at 1073 K, it transformed into the Heusler structure. In the next step, the Heusler Fe2VSi was annealed again at 1373 K and quenched into ice water, then the sample almost returned to the α-Mn structure. Detail of the crystal structure was investigated on the α-Mn phase by the neutron diffraction measurement. The high temperature α-Mn phase has more complex structure than the low temperature Heusler phase, and it is very unusual transformation because usually a high temperature phase has a simpler structure than its low temperature phase.
Original language | English |
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Pages (from-to) | 150-154 |
Number of pages | 5 |
Journal | Journal of Alloys and Compounds |
Volume | 417 |
Issue number | 1-2 |
DOIs | |
Publication status | Published - 2006 Jun 29 |
Keywords
- Crystal structure and symmetry
- Crystal structure change
- Heusler alloy
- X-ray and neutron diffraction
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry