Icosahedral quasicrystalline phase formation in Zr–Al–Ni–Cu glassy alloys by the addition of V, Nb and Ta

2002 ◽  
Vol 312-314 ◽  
pp. 502-507 ◽  
Author(s):  
J Saida ◽  
A Inoue
Keyword(s):  
Phase Formation ◽  
Quasicrystalline Phase ◽  
Glassy Alloys ◽  
Icosahedral Quasicrystalline Phase ◽  
Icosahedral Quasicrystalline

Formation of Icosahedral Quasicrystalline Phase in Zr70TM10Pd20 (TM = Fe, Co, or Cu) Ternary Glassy Alloys

2000 ◽  
Vol 15 (6) ◽  
pp. 1280-1283 ◽  
Author(s):  
M. Matsushita ◽  
J. Saida ◽  
C. Li ◽  
A. Inoue
Keyword(s):  
Glassy Alloy ◽  
Exothermic Reaction ◽  
Icosahedral Phase ◽  
Exothermic Peak ◽  
Quasicrystalline Phase ◽  
Glassy Alloys ◽  
Stage Crystallization ◽  
Icosahedral Quasicrystalline Phase ◽  
Primary Precipitation ◽  
Icosahedral Quasicrystalline

A nanoscale icosahedral quasicrystalline phase was confirmed as a primary precipitation phase in the melt-spun Zr70TM10Pd20 (TM = Fe, Co, or Cu) ternary glassy alloys with a two-stage crystallization process. The onset temperature of the transformation from amorphous to icosahedral phase is 713 K for Fe-, 696 K for Co-, and 680 K for Cu-containing alloys at the heating rate of 0.67 Ks−1. The size of the icosahedral particles is in the range of 20 to 50 nm for the Zr70Cu10Pd20 glassy alloy annealed for 120 s at 720 K. The icosahedral phase has a very fine particle size in a diameter range below 10 nm for the Zr70Fe10Pd20 and Zr70Co10Pd20 alloys. The crystallization reaction after the first exothermic peak results in the transition from the icosahedral to crystalline phases through a sharp exothermic reaction. Thus, the formation of the nanoscale icosahedral phase indicates the possibility that an icosahedral short-range order exists in the present glassy alloys.

Formation of nano icosahedral quasicrystalline phase in Zr-Ni-M (M=Pd, Au, Pt) ternary glassy alloys

2001 ◽  
Vol 250 (1) ◽  
pp. 285-288
Author(s):  
Junji Saida ◽  
Mitsuhide Matsushita ◽  
Chunfei Li ◽  
Akihisa Inoue
Keyword(s):  
Quasicrystalline Phase ◽  
Glassy Alloys ◽  
Icosahedral Quasicrystalline Phase ◽  
Icosahedral Quasicrystalline

Thermodynamic and kinetic properties of an icosahedral quasicrystalline phase in the Al-Pd-Tc system

2000 ◽  
Vol 42 (12) ◽  
pp. 2177-2183 ◽  
Author(s):  
M. N. Mikheeva ◽  
G. Kh. Panova ◽  
A. A. Teplov ◽  
M. N. Khlopkin ◽  
N. A. Chernoplekov ◽  
...  
Keyword(s):  
Quasicrystalline Phase ◽  
Kinetic Properties ◽  
Icosahedral Quasicrystalline Phase ◽  
Icosahedral Quasicrystalline
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