On the crystal structures of the Al-Cu-Cr alloy system

K. Sugiyama; H. Saito; K. Hiraga

doi:10.1016/S0925-8388(02)00161-5

On the crystal structures of the Al-Cu-Cr alloy system

K. Sugiyama, H. Saito, K. Hiraga

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

9 Citations (Scopus)

Abstract

The structures of hexagonal ζ-Al_72.6Cu_11.0Cr_16.4 (P6₃/m; a=17.714(3) Å, c=12.591(2) Å) and face centered cubic β-Al_67.4Cu_14.3Cr_18.3 (F4̄3m; a=18.161(1) Å) phases were determined by means of single crystal X-ray structural analysis. The ζ-phase is found at a relatively wide range of chemical composition of Al_80-65Cu_5-20Cr₁₅ and revealed as an iso-structure with κ-AlCrNi. On the other hand, the β-phase indicates the Na6Tl-type structure with more Cr-rich chemical composition around Al₆₅Cu_17.5Cr_17.5. These structures are well featured by the linkage of icosahedra with a heavy metal center.

Original language	English
Pages (from-to)	148-152
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	342
Issue number	1-2
DOIs	https://doi.org/10.1016/S0925-8388(02)00161-5
Publication status	Published - 2002 Aug 14
Externally published	Yes

Keywords

Al-Cu-Cr
Crystalline approximant
Single-crystal X-ray diffraction
Structure

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/S0925-8388(02)00161-5

Cite this

@article{5e31640a7b494c28a8c6ac6d92f04561,

title = "On the crystal structures of the Al-Cu-Cr alloy system",

abstract = "The structures of hexagonal ζ-Al72.6Cu11.0Cr16.4 (P63/m; a=17.714(3) {\AA}, c=12.591(2) {\AA}) and face centered cubic β-Al67.4Cu14.3Cr18.3 (F{\=4}3m; a=18.161(1) {\AA}) phases were determined by means of single crystal X-ray structural analysis. The ζ-phase is found at a relatively wide range of chemical composition of Al80-65Cu5-20Cr15 and revealed as an iso-structure with κ-AlCrNi. On the other hand, the β-phase indicates the Na6Tl-type structure with more Cr-rich chemical composition around Al65Cu17.5Cr17.5. These structures are well featured by the linkage of icosahedra with a heavy metal center.",

keywords = "Al-Cu-Cr, Crystalline approximant, Single-crystal X-ray diffraction, Structure",

author = "K. Sugiyama and H. Saito and K. Hiraga",

note = "Funding Information: This work has been financially supported by a Grant-in-Aid for Scientific Research (B) (No. 12450257) from the Japanese Society for the Promotion of Science.",

year = "2002",

month = aug,

day = "14",

doi = "10.1016/S0925-8388(02)00161-5",

language = "English",

volume = "342",

pages = "148--152",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier BV",

number = "1-2",

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TY - JOUR

T1 - On the crystal structures of the Al-Cu-Cr alloy system

AU - Sugiyama, K.

AU - Saito, H.

AU - Hiraga, K.

N1 - Funding Information: This work has been financially supported by a Grant-in-Aid for Scientific Research (B) (No. 12450257) from the Japanese Society for the Promotion of Science.

PY - 2002/8/14

Y1 - 2002/8/14

N2 - The structures of hexagonal ζ-Al72.6Cu11.0Cr16.4 (P63/m; a=17.714(3) Å, c=12.591(2) Å) and face centered cubic β-Al67.4Cu14.3Cr18.3 (F4̄3m; a=18.161(1) Å) phases were determined by means of single crystal X-ray structural analysis. The ζ-phase is found at a relatively wide range of chemical composition of Al80-65Cu5-20Cr15 and revealed as an iso-structure with κ-AlCrNi. On the other hand, the β-phase indicates the Na6Tl-type structure with more Cr-rich chemical composition around Al65Cu17.5Cr17.5. These structures are well featured by the linkage of icosahedra with a heavy metal center.

AB - The structures of hexagonal ζ-Al72.6Cu11.0Cr16.4 (P63/m; a=17.714(3) Å, c=12.591(2) Å) and face centered cubic β-Al67.4Cu14.3Cr18.3 (F4̄3m; a=18.161(1) Å) phases were determined by means of single crystal X-ray structural analysis. The ζ-phase is found at a relatively wide range of chemical composition of Al80-65Cu5-20Cr15 and revealed as an iso-structure with κ-AlCrNi. On the other hand, the β-phase indicates the Na6Tl-type structure with more Cr-rich chemical composition around Al65Cu17.5Cr17.5. These structures are well featured by the linkage of icosahedra with a heavy metal center.

KW - Al-Cu-Cr

KW - Crystalline approximant

KW - Single-crystal X-ray diffraction

KW - Structure

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U2 - 10.1016/S0925-8388(02)00161-5

DO - 10.1016/S0925-8388(02)00161-5

M3 - Article

AN - SCOPUS:0037077645

SN - 0925-8388

VL - 342

SP - 148

EP - 152

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

IS - 1-2

ER -

On the crystal structures of the Al-Cu-Cr alloy system

Abstract

Keywords

ASJC Scopus subject areas

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