Microstructure and crystallization in Cu50Zr45Al5 metallic glass

被引：0

作者：

Ou, X. ^{[1
]}

Roseker, W. ^{[2
]}

Saksl, K. ^{[2
]}

Franz, H. ^{[2
]}

Gerward, L. ^{[3
]}

Xu, X. ^{[1
]}

Zhang, G.Q. ^{[1
,4
]}

Wang, L.N. ^{[4
]}

Liu, J.F. ^{[1
]}

Jiang, J.Z. ^{[1
]}

机构：

[1] Laboratory of New-Structured Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China

[2] HASYLAB am DESY, Notkestrasse 85, D-22603 Hamburg, Germany

[3] Department of Physics, Technical University of Denmark, Building 307, DK-2800 Lyngby, Denmark

[4] Center for Analysis, Zhejiang Sci-Tech University, Hangzhou, 310018, China

来源：

| 1600年 / Elsevier Ltd, Langford Lane, Kidlington, Oxford, OX5 1GB, United Kingdom卷 / 441期

关键词：

Microstructure and crystallization of a Cu50Zr45Al5 metallic glass have been investigated by differential scanning calorimetry; X-ray diffraction and extended X-ray absorption fine structure (EXAFS) using synchrotron radiation. The width of the supercooled region is ΔTx = Tx - Tg = 67 K; where Tx and Tg are the crystallization and the glass transition temperature; respectively; the reduced glass transition temperature is Trg = Tg/Tl = 0.65; where Tl is the liquid temperature; and γ = Tx/(Tg + Tl) = 0.41. After crystallization of the as-prepared Cu50Zr45Al5 metallic glass; crystalline phases are identified as tetragonal CuZr2 and orthorhombic Cu10Zr7. The local atomic structures deduced from EXAFS reveal that Zr atoms in the as-prepared Cu50Zr45Al5 metallic glass are surrounded by about 5 Cu atoms at a distance of 2.70 Å and about 5 Zr atoms at 3.14 Å. © 2006 Elsevier B.V. All rights reserved;

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