Icosahedral order in supercooled liquids and glassy alloys

被引：21

作者：

Shimono, Masato ^{[1
]}

Onodera, Hidehiro ^{[1
]}

机构：

[1] Natl Inst Mat Sci, 1-2-1 Sengen, Tsukuba, Ibaraki 3050047, Japan

来源：

THERMEC 2006, PTS 1-5 | 2007年 / 539-543卷

基金：

日本学术振兴会;

关键词：

metallic glasses; supercooled liquid; computer simulation; rapid solidification;

D O I：

10.4028/www.scientific.net/MSF.539-543.2031

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Formation of the icosahedral order in supercooled liquids and glassy phases is investigated for a model alloy system by using molecular dynamics simulations. The simulation results show that the short-range icosahedral order grows in the supercooled liquids as well as in the glassy phases. Structural analyses reveal that the icosahedral clusters form a network in which the clusters are connected via the pentagonal-bicap sharing. Geometrical property of the network formed by the icosahedral clusters is an origin of medium-range order in the glassy phases

引用

页码：2031 / +

页数：2

共 14 条

[1] MOLECULAR-DYNAMICS SIMULATIONS AT CONSTANT PRESSURE AND-OR TEMPERATURE [J].

ANDERSEN, HC .

JOURNAL OF CHEMICAL PHYSICS, 1980, 72 (04) :2384-2393

[2] GEOMETRY OF THE STRUCTURE OF MONATOMIC LIQUIDS [J].

BERNAL, JD .

NATURE, 1960, 185 (4706) :68-70

[3] RANDOM PACKINGS AND STRUCTURE OF SIMPLE LIQUIDS .2. MOLECULAR GEOMETRY OF SIMPLE LIQUIDS [J].

FINNEY, JL .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1970, 319 (1539) :495-&

[4] NEW STRUCTURAL MODEL FOR TRANSITION METAL-METALLOID GLASSES [J].

GASKELL, PH .

NATURE, 1978, 276 (5687) :484-485

[5] ZR-AL-NI AMORPHOUS-ALLOYS WITH HIGH GLASS-TRANSITION TEMPERATURE AND SIGNIFICANT SUPERCOOLED LIQUID REGION [J].

INOUE, A ;

ZHANG, T ;

MASUMOTO, T .

MATERIALS TRANSACTIONS JIM, 1990, 31 (03) :177-183

[6] Icosahedral short-range order in amorphous alloys [J].

Luo, WK ;

Sheng, HW ;

Alamgir, FM ;

Bai, JM ;

He, JH ;

Ma, E .

PHYSICAL REVIEW LETTERS, 2004, 92 (14) :145502-1

[7] A structural model for metallic glasses [J].

Miracle, DB .

NATURE MATERIALS, 2004, 3 (10) :697-702

[8] ORDER, FRUSTRATION, AND DEFECTS IN LIQUIDS AND GLASSES [J].

NELSON, DR .

PHYSICAL REVIEW B, 1983, 28 (10) :5515-5535

[9]

PARKER A, 1993, APPL PHYS LETT, V63, P2342

[10] Stability of supercooled liquid and transformation Behavior in Zr-based glassy alloys [J].

Saida, J ;

Matsushita, M ;

Inoue, A .

MATERIALS TRANSACTIONS, 2002, 43 (08) :1937-1946

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