Heterogeneous nucleation and growth of a solid in a nanomodified alloy

被引：3

作者：

Cherepanov, A. ^{[1
]}

Cherepanova, V ^{[1
,2
]}

Manolov, V ^{[3
]}

机构：

[1] Khristianovich Inst Theoret & Appl Mech SB RAS, Novosibirsk 630090, Russia

[2] Novosibirsk State Tech Univ, Novosibirsk 630073, Russia

[3] Bulgarian Acad Sci, Inst Met Sci Equipment & Technol Acad A Balevski, Hydro & Aerodynam Ctr, Sofia 1574, Bulgaria

来源：

JOURNAL OF CRYSTAL GROWTH | 2019年 / 527卷

关键词：

Solidification; Nucleation; Nanostructures; Nanomaterials; INTERMEDIATE STAGE; STRUCTURAL-STEEL; CRYSTAL-GROWTH;

D O I：

10.1016/j.jcrysgro.2019.125251

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

The authors propose a model of heterogeneous nucleation and macroscopic growth of the solid phase on wettable refractory cubic nanoparticles. A numerical study of the crystallization process of a binary alloy with a phase diagram of the eutectic type modified by nanoparticles of titanium nitride are carried out. Within the proposed model, new expressions are obtained for the free energy and the nucleation rate of crystallization centers on cubic ultrafine seeds, taking into account the influence of size and capillary effects. The results of calculations reveal that the wettability of the substrate surface, as well as its size, has the greatest influence on the processes of nucleation and growth of crystals in a nano-modified melt. A comparison of the calculated parameters related to the issue under study with the experimental data shows satisfactory agreement.

引用

页数：4

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