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, D. H.
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
AN - SCOPUS:33747762030
VL - 86
SP - 425
EP - 433
JO - Philosophical Magazine Letters
JF - Philosophical Magazine Letters
SN - 0950-0839
IS - 7
ER -