Icosahedral phase formation in ti68-xCr32Sixalloys

X. Zhang; K. F. Kelton

doi:10.1080/09500839008215133

Icosahedral phase formation in ti_68-xCr₃₂Si_xalloys

X. Zhang
, K. F. Kelton

Department of Physics

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

33 Scopus citations

Abstract

We report, for the first time, the formation of the icosahedral phase (i-phase) in rapidly quenched Ti_68-xCr₃₂Si_xalloys, where 6≤x≤ 18. The i-phase occurs at a composition for which there áre no structurally similar crystalline phases. Transmission electron microscopy (TEM) and X-ray diffraction measurements are presented. The TEM diffraction patterns show strong localized diffuse scattering and spot anisotropy. These features are compared with similar ones found in Al₈₃Cr₁₇and Ti₆₁Mn₃₇Si₂icosahedral phases. No evidence for an enthalpic signature of phase transformation was found upon heating to the melting temperature, indicating that the i-phase is at least strongly metastable. The first estimates of the density are reported.

Original language	English
Pages (from-to)	265-271
Number of pages	7
Journal	Philosophical Magazine Letters
Volume	62
Issue number	4
DOIs	https://doi.org/10.1080/09500839008215133
State	Published - Oct 1990

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title = "Icosahedral phase formation in ti68-xCr32Sixalloys",

abstract = "We report, for the first time, the formation of the icosahedral phase (i-phase) in rapidly quenched Ti68-xCr32Sixalloys, where 6≤x≤ 18. The i-phase occurs at a composition for which there {\'a}re no structurally similar crystalline phases. Transmission electron microscopy (TEM) and X-ray diffraction measurements are presented. The TEM diffraction patterns show strong localized diffuse scattering and spot anisotropy. These features are compared with similar ones found in Al83Cr17and Ti61Mn37Si2icosahedral phases. No evidence for an enthalpic signature of phase transformation was found upon heating to the melting temperature, indicating that the i-phase is at least strongly metastable. The first estimates of the density are reported.",

author = "X. Zhang and Kelton, \{K. F.\}",

year = "1990",

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doi = "10.1080/09500839008215133",

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journal = "Philosophical Magazine Letters",

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T1 - Icosahedral phase formation in ti68-xCr32Sixalloys

AU - Zhang, X.

AU - Kelton, K. F.

PY - 1990/10

Y1 - 1990/10

N2 - We report, for the first time, the formation of the icosahedral phase (i-phase) in rapidly quenched Ti68-xCr32Sixalloys, where 6≤x≤ 18. The i-phase occurs at a composition for which there áre no structurally similar crystalline phases. Transmission electron microscopy (TEM) and X-ray diffraction measurements are presented. The TEM diffraction patterns show strong localized diffuse scattering and spot anisotropy. These features are compared with similar ones found in Al83Cr17and Ti61Mn37Si2icosahedral phases. No evidence for an enthalpic signature of phase transformation was found upon heating to the melting temperature, indicating that the i-phase is at least strongly metastable. The first estimates of the density are reported.

AB - We report, for the first time, the formation of the icosahedral phase (i-phase) in rapidly quenched Ti68-xCr32Sixalloys, where 6≤x≤ 18. The i-phase occurs at a composition for which there áre no structurally similar crystalline phases. Transmission electron microscopy (TEM) and X-ray diffraction measurements are presented. The TEM diffraction patterns show strong localized diffuse scattering and spot anisotropy. These features are compared with similar ones found in Al83Cr17and Ti61Mn37Si2icosahedral phases. No evidence for an enthalpic signature of phase transformation was found upon heating to the melting temperature, indicating that the i-phase is at least strongly metastable. The first estimates of the density are reported.

UR - https://www.scopus.com/pages/publications/0038248872

U2 - 10.1080/09500839008215133

DO - 10.1080/09500839008215133

M3 - Article

AN - SCOPUS:0038248872

SN - 0950-0839

VL - 62

SP - 265

EP - 271

JO - Philosophical Magazine Letters

JF - Philosophical Magazine Letters

IS - 4

ER -

Icosahedral phase formation in ti_68-xCr₃₂Si_xalloys

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