Instantaneous growth approximation describing the nanocrystallization process of amorphous alloys:: A cellular automata model

被引：17

作者：

Blazquez, J. S. ^{[1
]}

Franco, V. ^{[1
]}

Conde, C. F. ^{[1
]}

Millan, M. ^{[1
]}

Conde, A. ^{[1
]}

机构：

[1] Univ Seville, CSIC, Dept Fis Mat Condensada, ICMSE, E-41080 Seville, Spain

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 2008年 / 354卷 / 30期

关键词：

amorphous metals; metallic glasses; alloys; crystallization; crystal growth; nucleation;

D O I：

10.1016/j.jnoncrysol.2008.03.038

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A cellular automata simulation based on an instantaneous growth approximation is developed to model the nanocrystallization kinetics. In this frame, the time required for a nucleus to grow up to its maximum size is neglected in comparison with the time required for the crystallization process. This approach allows a simple interpretation of the very low values of Avrami exponent found for nanocrystallization processes, <= 1, in the theoretical frame of Johnson-Mehl-Avrami-Kolmogorov theory. Kinetics and microstructure predictions from the simulations are compared with experimental data for FeCoNbB alloys and a good qualitative agreement is found. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：3597 / 3605

页数：9

共 31 条

[1] On the isothermal kinetics analysis of transformations in metastable systems:: combined use of isothermal and non-isothermal calorimetry [J].

Blazquez, J. S. ;

Millan, M. ;

Conde, C. F. ;

Conde, A. .

PHILOSOPHICAL MAGAZINE, 2007, 87 (27) :4151-4167

[2] The influence of Cu addition on the crystallization and magnetic properties of FeCoNbB alloys [J].

Blázquez, JS ;

Franco, V ;

Conde, A .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2002, 14 (45) :11717-11727

[3] Kinetics of nanocrystallization in FeCoNbB(Cu) alloys [J].

Blázquez, JS ;

Conde, CF ;

Conde, A .

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 2003, 76 (04) :571-575

[4] Nanocrystallization in Fe73.5Si13.5B9Cu1Nb1X2 (X = Nb, Mo and V) alloys studied by X-ray synchrotron radiation [J].

Borrego, JM ;

Conde, CF ;

Millan, M ;

Conde, A ;

Capitan, MJ ;

Joulaud, JL .

NANOSTRUCTURED MATERIALS, 1998, 10 (04) :575-583

[5]

CHRISTIAN JW, 1975, THEORY TRANSFORMATIO, P542

[6] An analytical model to represent crystallization kinetics in materials with metastable phase formation [J].

Claudio, D ;

Gonzalez-Hernandez, J ;

Licea, O ;

Laine, B ;

Prokhorov, E ;

Trapaga, G .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 2006, 352 (01) :51-55

[7] Crystallisation kinetics and microstructure development in metallic systems [J].

Clavaguera-Mora, MT ;

Clavaguera, N ;

Crespo, D ;

Pradell, T .

PROGRESS IN MATERIALS SCIENCE, 2002, 47 (06) :559-619

[8] An in situ synchrotron study of nanocrystallization in (Fe, Cr)-Si-B(-Cu-Nb) alloys [J].

Conde, CF ;

Millan, M ;

Borrego, JM ;

Conde, A ;

Capitan, MJ ;

Joulaud, JL .

PHILOSOPHICAL MAGAZINE LETTERS, 1998, 78 (03) :221-227

[9] CRYSTALLIZATION OF A FINEMET-TYPE ALLOY - NANOCRYSTALLIZATION KINETICS [J].

CONDE, CF ;

CONDE, A .

MATERIALS LETTERS, 1994, 21 (5-6) :409-414

[10] Cellular automata simulation of grain growth in three dimensions based on the lowest-energy principle [J].

Ding, H. L. ;

He, Y. Z. ;

Liu, L. F. ;

Ding, W. J. .

JOURNAL OF CRYSTAL GROWTH, 2006, 293 (02) :489-497

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