On the validity of Avrami formalism in primary crystallization

被引:76
作者
Bruna, Pere
Crespo, Daniel
Gonzalez-Cinca, Ricard
Pineda, Eloi
机构
[1] Univ Politecn Catalunya, Dept Fis Aplicada, EPSC, Barcelona 08860, Spain
[2] Univ Politecn Catalunya, Dept Fis Engn Nucl, ESAB, Barcelona 08860, Spain
[3] Univ Politecn Catalunya, Ctr Recerca Nanoengn, Barcelona 08860, Spain
[4] Univ Politecn Catalunya, Ctr Recerca Aeronaut, Barcelona 08860, Spain
关键词
PHASE-TRANSFORMATIONS; NONRANDOM NUCLEATION; COMPUTER-SIMULATION; AMORPHOUS-ALLOYS; METALLIC GLASSES; KINETICS; DIFFUSION; GROWTH; MODEL; FE73.5CU1NB3SI13.5B9;
D O I
10.1063/1.2337407
中图分类号
O59 [应用物理学];
学科分类号
摘要
Calorimetric data of primary crystallization is usually interpreted in the framework of the Kolmogorov [Dokl. Akad. Nauk SSSR 1, 355 (1937)], Johnson and Mehl [Trans. AIME 135, 416 (1939)], and Avrami [J. Chem. Phys. 7, 1103 (1939); 8, 212 (1940); 9, 177 (1941)] (KJMA) theory. However, while the KJMA theory assumes random nucleation and exhaustion of space by direct impingement, primary crystallization is usually driven by diffusion-controlled growth with soft impingement between the growing crystallites. This results in a stop of the growth before the space is fully crystallized and induces nonrandom nucleation. In this work, phase-field simulations are used to check the validity of different kinetic models for describing primary crystallization kinetics. The results show that KJMA theory provides a good approximation to the soft-impingement and nonrandom nucleation effects. Moreover, these effects are not responsible of the slowing down of the kinetics found experimentally in the primary crystallization of glasses. (c) 2006 American Institute of Physics.
引用
收藏
页数:11
相关论文
共 41 条
[1]   DIFFUSION-LIMITED PHASE TRANSFORMATIONS - A COMPARISON AND CRITICAL EVALUATION OF MATHEMATICAL APPROXIMATIONS [J].
AARON, HB ;
FAINSTEIN, D ;
KOTLER, GR .
JOURNAL OF APPLIED PHYSICS, 1970, 41 (11) :4404-+
[2]   Nanocrystal development during primary crystallization of amorphous alloys [J].
Allen, DR ;
Foley, JC ;
Perepezko, JH .
ACTA MATERIALIA, 1998, 46 (02) :431-440
[3]   Granulation, Phase Change, and Microstructure - Kinetics of Phase Change. III [J].
Avrami, M .
JOURNAL OF CHEMICAL PHYSICS, 1941, 9 (02) :177-184
[4]   Kinetics of phase change I - General theory [J].
Avrami, M .
JOURNAL OF CHEMICAL PHYSICS, 1939, 7 (12) :1103-1112
[5]  
Avrami M., 1940, J CHEM PHYS, V8, P812, DOI [10.1063/1.1750631, DOI 10.1063/1.1750631]
[6]   KINETICS OF TRANSFORMATION FOR ANISOTROPIC PARTICLES INCLUDING SHIELDING EFFECTS [J].
BIRNIE, DP ;
WEINBERG, MC .
JOURNAL OF CHEMICAL PHYSICS, 1995, 103 (09) :3742-3746
[7]  
BRUNA P, THESIS U POLITECNICA
[8]   THE KINETICS OF GRAIN BOUNDARY NUCLEATED REACTIONS [J].
CAHN, JW .
ACTA METALLURGICA, 1956, 4 (05) :449-459
[9]   STEADY-STATE KINETICS OF DIFFUSIONLESS 1ST ORDER PHASE-TRANSFORMATIONS [J].
CHAN, SK .
JOURNAL OF CHEMICAL PHYSICS, 1977, 67 (12) :5755-5762
[10]   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