Growth and characterization of Al-Cu-Li quasicrystals

J. M. Parsey; H. S. Chen; A. R. Kortan; F. A. Thiel; A. E. Miller; R. C. Farrow

doi:10.1557/JMR.1988.0233

Growth and characterization of Al-Cu-Li quasicrystals

J. M. Parsey, H. S. Chen, A. R. Kortan, F. A. Thiel, A. E. Miller, R. C. Farrow

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

9 Scopus citations

Abstract

The alloy system Al-Li-Cu was investigated extensively over the composition range 5.8-8 Al-Cu-3Li to develop a detailed understanding of the formation and properties of the icosahedral phase, known as T₂. Material from the various charges was analyzed by optical and electron microscopy, energy dispersive x-ray analysis, differential thermal analysis, and differential scanning calorimetry. The role of the melt composition and the solidification velocity were found to be crucial in determining the micro-and macrostructure and the existence of the icosahedral phase. A pseudobinary phase diagram for the region around Al₆ CuLi₃ is presented based on these analyses. Based on this phase diagram the largest single icosahedral crystals of Al_5.1 CuLi₃ yet reported, with diameters greater than 1 cm, were produced by Bridgman methods.

Original language	English (US)
Pages (from-to)	233-237
Number of pages	5
Journal	Journal of Materials Research
Volume	3
Issue number	2
DOIs	https://doi.org/10.1557/JMR.1988.0233
State	Published - Apr 1988
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1557/JMR.1988.0233

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title = "Growth and characterization of Al-Cu-Li quasicrystals",

abstract = "The alloy system Al-Li-Cu was investigated extensively over the composition range 5.8-8 Al-Cu-3Li to develop a detailed understanding of the formation and properties of the icosahedral phase, known as T2. Material from the various charges was analyzed by optical and electron microscopy, energy dispersive x-ray analysis, differential thermal analysis, and differential scanning calorimetry. The role of the melt composition and the solidification velocity were found to be crucial in determining the micro-and macrostructure and the existence of the icosahedral phase. A pseudobinary phase diagram for the region around Al6 CuLi3 is presented based on these analyses. Based on this phase diagram the largest single icosahedral crystals of Al5.1 CuLi3 yet reported, with diameters greater than 1 cm, were produced by Bridgman methods.",

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language = "English (US)",

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T1 - Growth and characterization of Al-Cu-Li quasicrystals

AU - Parsey, J. M.

AU - Chen, H. S.

AU - Kortan, A. R.

AU - Thiel, F. A.

AU - Miller, A. E.

AU - Farrow, R. C.

PY - 1988/4

Y1 - 1988/4

N2 - The alloy system Al-Li-Cu was investigated extensively over the composition range 5.8-8 Al-Cu-3Li to develop a detailed understanding of the formation and properties of the icosahedral phase, known as T2. Material from the various charges was analyzed by optical and electron microscopy, energy dispersive x-ray analysis, differential thermal analysis, and differential scanning calorimetry. The role of the melt composition and the solidification velocity were found to be crucial in determining the micro-and macrostructure and the existence of the icosahedral phase. A pseudobinary phase diagram for the region around Al6 CuLi3 is presented based on these analyses. Based on this phase diagram the largest single icosahedral crystals of Al5.1 CuLi3 yet reported, with diameters greater than 1 cm, were produced by Bridgman methods.

AB - The alloy system Al-Li-Cu was investigated extensively over the composition range 5.8-8 Al-Cu-3Li to develop a detailed understanding of the formation and properties of the icosahedral phase, known as T2. Material from the various charges was analyzed by optical and electron microscopy, energy dispersive x-ray analysis, differential thermal analysis, and differential scanning calorimetry. The role of the melt composition and the solidification velocity were found to be crucial in determining the micro-and macrostructure and the existence of the icosahedral phase. A pseudobinary phase diagram for the region around Al6 CuLi3 is presented based on these analyses. Based on this phase diagram the largest single icosahedral crystals of Al5.1 CuLi3 yet reported, with diameters greater than 1 cm, were produced by Bridgman methods.

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Growth and characterization of Al-Cu-Li quasicrystals

Abstract

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