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Crystal Research and Technology |
Cryst. Res. Technol. 38,
755 (2003) - Abstract -
Formation of a new F.C.C. τ2 phase in rapidly quenched Al55Cu35V10 alloy
D. K. Misra, R. S. Tiwari, and O. N. Srivastava
Department of Physics, Banaras Hindu University, Varanasi 221005, India
| Keywords | microstructure, quasicrystals, vacancy ordered phase, crystalline approximant, rapid quenching |
| PACS | 61.46.+W, 61.10-I, 61.14-X, 61.43.-J |
| DOI | 10.1002/crat.200310091 |
X-ray diffraction and transmission electron microscopy experiments were carried out to study the structure of rapidly solidified as-cast and annealed Al55Cu35V10 alloy. The as-cast Al55Cu35V10 alloy shows the presence of a new f.c.c. τ2 phase (a=0.58nm) along with a b.c.c. (a=0.89nm) phase which after subsequent annealing transforms into single f.c.c. phase (a=0.58nm). In this paper, it is also reported that these phases are crystalline approximants to an icosahedral phase on the basis of e/a (valence electron per atom) constant line.
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