Abstract
The possibility of synthesis of quasicrystalline and associated approximant phases during mechanical alloying and subsequent heat treatment of Al 65 Cu 20 Fe 10 Si 5 alloy powders has been investigated. It is shown that, in addition to the stable ordered quasicrystal and 1/1 cubic approximant, two more phases having orthorhombic symmetry coexist. The a and c parameters of both these phases are similar to the lattice parameters of the cubic approximant, whereas their b parameters are, respectively, three and four times larger than the c parameters. It is suggested that these phases evolve on account of local symmetry breaking of the cubic approximant phase, possibly due to ordering.
| Original language | English |
|---|---|
| Pages (from-to) | 425-433 |
| Number of pages | 9 |
| Journal | Philosophical Magazine Letters |
| Volume | 86 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 2006 Jul 1 |
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All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
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Orthorhombic approximant phases and their relation to quasicrystals in mechanically alloyed Al-Cu-Fe-Si alloys. / Kim, S. H.; Chattopadhyay, K.; Kim, K. B.; Kim, W. T.; Kim, Do Hyang.
In: Philosophical Magazine Letters, Vol. 86, No. 7, 01.07.2006, p. 425-433.Research output: Contribution to journal › Article
TY - JOUR
T1 - Orthorhombic approximant phases and their relation to quasicrystals in mechanically alloyed Al-Cu-Fe-Si alloys
AU - Kim, S. H.
AU - Chattopadhyay, K.
AU - Kim, K. B.
AU - Kim, W. T.
AU - Kim, Do Hyang
PY - 2006/7/1
Y1 - 2006/7/1
N2 - The possibility of synthesis of quasicrystalline and associated approximant phases during mechanical alloying and subsequent heat treatment of Al 65 Cu 20 Fe 10 Si 5 alloy powders has been investigated. It is shown that, in addition to the stable ordered quasicrystal and 1/1 cubic approximant, two more phases having orthorhombic symmetry coexist. The a and c parameters of both these phases are similar to the lattice parameters of the cubic approximant, whereas their b parameters are, respectively, three and four times larger than the c parameters. It is suggested that these phases evolve on account of local symmetry breaking of the cubic approximant phase, possibly due to ordering.
AB - The possibility of synthesis of quasicrystalline and associated approximant phases during mechanical alloying and subsequent heat treatment of Al 65 Cu 20 Fe 10 Si 5 alloy powders has been investigated. It is shown that, in addition to the stable ordered quasicrystal and 1/1 cubic approximant, two more phases having orthorhombic symmetry coexist. The a and c parameters of both these phases are similar to the lattice parameters of the cubic approximant, whereas their b parameters are, respectively, three and four times larger than the c parameters. It is suggested that these phases evolve on account of local symmetry breaking of the cubic approximant phase, possibly due to ordering.
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U2 - 10.1080/09500830600860973
DO - 10.1080/09500830600860973
M3 - Article
VL - 86
SP - 425
EP - 433
JO - Philosophical Magazine Letters
JF - Philosophical Magazine Letters
SN - 0950-0839
IS - 7
ER -