A stable Ti-based quasicrystal

K. F. Kelton; W. J. Kim; R. M. Stroud

doi:10.1063/1.119133

A stable Ti-based quasicrystal

K. F. Kelton, W. J. Kim, R. M. Stroud

Department of Physics

Research output: Contribution to journal › Article › peer-review

200 Scopus citations

Abstract

The thermal stability of the icosahedral phase (i phase) in Ti₄₅Zr₃₈Ni₁₇ alloys is demonstrated. As-cast alloys containing initially only the C14 hexagonal Laves and α-solid-solution phases transformed primarily to the icosahedral phase upon annealing in vacuum for 64 h at 570 °C. This confirms previous evidence for i-phase stability and firmly establishes this quasicrystal as the first nonaluminum stable icosahedral phase. Diffraction data show that this stable i phase is primitive; energy dispersive x-ray spectroscopy measurements place its composition near Ti_41.5Zr_41.5Ni₁₇. These and other results suggest that the structure of this i phase is similar to that of i(A1LiCu).

Original language	English
Pages (from-to)	3230-3232
Number of pages	3
Journal	Applied Physics Letters
Volume	70
Issue number	24
DOIs	https://doi.org/10.1063/1.119133
State	Published - Jun 16 1997

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abstract = "The thermal stability of the icosahedral phase (i phase) in Ti45Zr38Ni17 alloys is demonstrated. As-cast alloys containing initially only the C14 hexagonal Laves and α-solid-solution phases transformed primarily to the icosahedral phase upon annealing in vacuum for 64 h at 570 °C. This confirms previous evidence for i-phase stability and firmly establishes this quasicrystal as the first nonaluminum stable icosahedral phase. Diffraction data show that this stable i phase is primitive; energy dispersive x-ray spectroscopy measurements place its composition near Ti41.5Zr41.5Ni17. These and other results suggest that the structure of this i phase is similar to that of i(A1LiCu).",

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T1 - A stable Ti-based quasicrystal

AU - Kelton, K. F.

AU - Kim, W. J.

AU - Stroud, R. M.

PY - 1997/6/16

Y1 - 1997/6/16

N2 - The thermal stability of the icosahedral phase (i phase) in Ti45Zr38Ni17 alloys is demonstrated. As-cast alloys containing initially only the C14 hexagonal Laves and α-solid-solution phases transformed primarily to the icosahedral phase upon annealing in vacuum for 64 h at 570 °C. This confirms previous evidence for i-phase stability and firmly establishes this quasicrystal as the first nonaluminum stable icosahedral phase. Diffraction data show that this stable i phase is primitive; energy dispersive x-ray spectroscopy measurements place its composition near Ti41.5Zr41.5Ni17. These and other results suggest that the structure of this i phase is similar to that of i(A1LiCu).

AB - The thermal stability of the icosahedral phase (i phase) in Ti45Zr38Ni17 alloys is demonstrated. As-cast alloys containing initially only the C14 hexagonal Laves and α-solid-solution phases transformed primarily to the icosahedral phase upon annealing in vacuum for 64 h at 570 °C. This confirms previous evidence for i-phase stability and firmly establishes this quasicrystal as the first nonaluminum stable icosahedral phase. Diffraction data show that this stable i phase is primitive; energy dispersive x-ray spectroscopy measurements place its composition near Ti41.5Zr41.5Ni17. These and other results suggest that the structure of this i phase is similar to that of i(A1LiCu).

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JO - Applied Physics Letters

JF - Applied Physics Letters

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A stable Ti-based quasicrystal

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