Medium-range order in Al-based liquid binary alloys

被引：37

作者：

Roik, O. S. ^{[1
]}

Samsonnikov, O. V. ^{[1
]}

Kazimirov, V. P. ^{[1
]}

Sokolskii, V. E. ^{[1
]}

Galushko, S. M. ^{[1
]}

机构：

[1] Taras Shevchenko Kyiv Natl Univ, Dept Chem, UA-01033 Kiev, Ukraine

来源：

JOURNAL OF MOLECULAR LIQUIDS | 2010年 / 151卷 / 01期

关键词：

Liquid alloys; X-ray diffraction; Prepeak; Reverse Monte Carlo method; Voronoi and Delaunay tessellations; REVERSE MONTE-CARLO; QUASI-CRYSTALS; NI; CO; INTENSITIES;

D O I：

10.1016/j.molliq.2009.11.001

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A short-to-intermediate range order of liquid Al-Cu binary alloys has been studied by X-ray diffraction and the reverse Monte Carlo modeling. The comprehensive analysis of three-dimensional models of the liquid Al-TM (TM =Co. Ni. Cu) binary alloys has been performed by means of Voronoi-Delaunay method. The existence of a prepeak in the S(Q) function of the liquid alloys reached with Al is caused by a specific arrangement of 3d-transition metal atoms in dense packed polytetrahedral clusters. It has been found that the icosahedral short-range order in dense polytetrahedral clusters and chemical short-range order lead to the formation of the medium range order in the investigated melts. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：42 / 49

页数：8

共 23 条

[1] Homogeneous crystallization of the Lennard-Jones liquid. Structural analysis based on Delaunay simplices method [J].

Anikeenko, A. V. ;

Medvedev, N. N. .

JOURNAL OF STRUCTURAL CHEMISTRY, 2006, 47 (02) :267-276

[2]

Avdyukhina V.M., 1986, XRAY DIFFRACTION ANA

[3] Local structure in liquid binary Al-Cu and Al-Ni alloys [J].

Brillo, J. ;

Bytchkov, A. ;

Egry, I. ;

Hennet, L. ;

Mathiak, G. ;

Pozdnyakova, I. ;

Price, D. L. ;

Thiaudiere, D. ;

Zanghi, D. .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 2006, 352 (38-39) :4008-4012

[4] Influence of chemical short-range order on atomic diffusion in Al-Ni melts [J].

Das, SK ;

Horbach, J ;

Koza, MM ;

Chatoth, SM ;

Meyer, A .

APPLIED PHYSICS LETTERS, 2005, 86 (01) :011918-1

[5] STRUCTURE FACTOR OF LIQUID COPPER AT 1393-K AND 1833-K [J].

EDER, OJ ;

ERDPRESSER, E ;

KUNSCH, B ;

STILLER, H ;

SUDA, M .

JOURNAL OF PHYSICS F-METAL PHYSICS, 1980, 10 (02) :183-195

[6] SUPERCOOLING OF LIQUIDS [J].

FRANK, FC .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1952, 215 (1120) :43-46

[7] Decagonal quasicrystals in Al-Co, Al-Ni and in their ternary alloys [J].

Grushko, B ;

HollandMoritz, D .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1997, 226 :999-1003

[8] Short-range order in undercooled and stable melts forming quasicrystals and approximants and its influence on nucleation [J].

Holland-Moritz, D ;

Schenk, T ;

Simonet, V ;

Bellissent, R .

PHILOSOPHICAL MAGAZINE, 2006, 86 (3-5) :255-262

[9]

KAZIMIROV VP, 1996, RASPLAVY, V5, P85

[10] A METHOD FOR CONVERTING EXPERIMENTAL X-RAY INTENSITIES TO AN ABSOLUTE SCALE [J].

KROGHMOE, J .

ACTA CRYSTALLOGRAPHICA, 1956, 9 (10) :951-953

← 1 2 3 →