Formation of quasicrystalline phases in Al-rich Al-Mn-Be alloys

H. J. Chang; E. Fleury; G. S. Song; W. T. Kim; D. H. Kim

doi:10.1016/j.jnoncrysol.2003.11.005

Formation of quasicrystalline phases in Al-rich Al-Mn-Be alloys

H. J. Chang, E. Fleury, G. S. Song, W. T. Kim, D. H. Kim

Department of Materials Science and Engineering

Research output: Contribution to journal › Conference article › peer-review

21 Citations (Scopus)

Abstract

The effect of Be addition on the formation of quasicrystalline phases in Al-rich Al-Mn(-Be) alloys has been investigated. A metastable icosahedral quasicrystalline phase was found to form in a 93.5Al-5Mn-1.5Be (in wt%) alloy prepared by a conventional casting technique, indicating that the addition of Be to Al-Mn alloys improves the quasicrystal forming ability. The icosahedral phase in conventionally cast Al-Mn-Be alloys forms in the undercooled melt with the equilibrium growth morphology of the pentagonal dodecahedron. Heat treatment at 540 °C for 100 h results in the precipitation of small platelets of a two-dimensional quasiperiodic phase in the α-Al matrix. These precipitates have an orientation relationship with the α-Al matrix.

Original language	English
Pages (from-to)	12-16
Number of pages	5
Journal	Journal of Non-Crystalline Solids
Volume	334-335
DOIs	https://doi.org/10.1016/j.jnoncrysol.2003.11.005
Publication status	Published - 2004 Mar 15
Event	8th International Conference on Quasicrystals - Bangalore, India Duration: 2002 Sept 8 → 2002 Sept 13

Bibliographical note

Funding Information:
The authors are grateful for the financial support by the Creative Research initiatives of the Korean Ministry of Science and Technology.

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Materials Chemistry

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10.1016/j.jnoncrysol.2003.11.005

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title = "Formation of quasicrystalline phases in Al-rich Al-Mn-Be alloys",

abstract = "The effect of Be addition on the formation of quasicrystalline phases in Al-rich Al-Mn(-Be) alloys has been investigated. A metastable icosahedral quasicrystalline phase was found to form in a 93.5Al-5Mn-1.5Be (in wt%) alloy prepared by a conventional casting technique, indicating that the addition of Be to Al-Mn alloys improves the quasicrystal forming ability. The icosahedral phase in conventionally cast Al-Mn-Be alloys forms in the undercooled melt with the equilibrium growth morphology of the pentagonal dodecahedron. Heat treatment at 540 °C for 100 h results in the precipitation of small platelets of a two-dimensional quasiperiodic phase in the α-Al matrix. These precipitates have an orientation relationship with the α-Al matrix.",

author = "Chang, {H. J.} and E. Fleury and Song, {G. S.} and Kim, {W. T.} and Kim, {D. H.}",

note = "Funding Information: The authors are grateful for the financial support by the Creative Research initiatives of the Korean Ministry of Science and Technology.; 8th International Conference on Quasicrystals ; Conference date: 08-09-2002 Through 13-09-2002",

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doi = "10.1016/j.jnoncrysol.2003.11.005",

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T1 - Formation of quasicrystalline phases in Al-rich Al-Mn-Be alloys

AU - Chang, H. J.

AU - Fleury, E.

AU - Song, G. S.

AU - Kim, W. T.

AU - Kim, D. H.

N1 - Funding Information: The authors are grateful for the financial support by the Creative Research initiatives of the Korean Ministry of Science and Technology.

PY - 2004/3/15

Y1 - 2004/3/15

N2 - The effect of Be addition on the formation of quasicrystalline phases in Al-rich Al-Mn(-Be) alloys has been investigated. A metastable icosahedral quasicrystalline phase was found to form in a 93.5Al-5Mn-1.5Be (in wt%) alloy prepared by a conventional casting technique, indicating that the addition of Be to Al-Mn alloys improves the quasicrystal forming ability. The icosahedral phase in conventionally cast Al-Mn-Be alloys forms in the undercooled melt with the equilibrium growth morphology of the pentagonal dodecahedron. Heat treatment at 540 °C for 100 h results in the precipitation of small platelets of a two-dimensional quasiperiodic phase in the α-Al matrix. These precipitates have an orientation relationship with the α-Al matrix.

AB - The effect of Be addition on the formation of quasicrystalline phases in Al-rich Al-Mn(-Be) alloys has been investigated. A metastable icosahedral quasicrystalline phase was found to form in a 93.5Al-5Mn-1.5Be (in wt%) alloy prepared by a conventional casting technique, indicating that the addition of Be to Al-Mn alloys improves the quasicrystal forming ability. The icosahedral phase in conventionally cast Al-Mn-Be alloys forms in the undercooled melt with the equilibrium growth morphology of the pentagonal dodecahedron. Heat treatment at 540 °C for 100 h results in the precipitation of small platelets of a two-dimensional quasiperiodic phase in the α-Al matrix. These precipitates have an orientation relationship with the α-Al matrix.

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U2 - 10.1016/j.jnoncrysol.2003.11.005

DO - 10.1016/j.jnoncrysol.2003.11.005

M3 - Conference article

AN - SCOPUS:17744420447

SN - 0022-3093

VL - 334-335

SP - 12

EP - 16

JO - Journal of Non-Crystalline Solids

JF - Journal of Non-Crystalline Solids

T2 - 8th International Conference on Quasicrystals

Y2 - 8 September 2002 through 13 September 2002

ER -

Formation of quasicrystalline phases in Al-rich Al-Mn-Be alloys

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

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