Proposal of Two-dimensional Local Curvature Multi-vertex Model for Grain Growth Simulation

被引：0

作者：

Tamaki, Teruyuki ^{[1
,3
]}

Murakami, Kenichi ^{[1
]}

Ushioda, Kohsaku ^{[2
,3
]}

机构：

[1] Nippon Steel & Sumitomo Met Corp, Hirohata R&D Lab, Hirohata Ku, 1 Fuji Cho, Himeji, Hyogo 6711188, Japan

[2] Nippon Steel & Sumitomo Met Corp, Tech Res & Dev Bur, 20-1 Shintomi, Futtsu, Chiba 2938511, Japan

[3] Kanazawa Univ, Grad Sch Nat Sci & Technol, Kanazawa, Ishikawa 9201192, Japan

来源：

ISIJ INTERNATIONAL | 2016年 / 56卷 / 10期

关键词：

grain growth; simulation; local curvature; multi-vertex; virtual vertex; triple junction; grain boundary; COMPUTER-SIMULATION;

D O I：

10.2355/isijinternational.ISIJINT-2016-107

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

A local curvature multi-vertex model was developed. This model is a straightforward two-dimensional topological network model based on physical principles that consider the local curvatures of grain boundaries and the grain boundary tensions at triple junctions. Virtual vertices are set on the grain boundaries in order to calculate the driving forces of grain boundary and triple junction migration. Therefore, the accuracy of the developed model is higher than that of the conventional curvature model and the vertex model. In the proposed model, the generation and annihilation of virtual vertices maintained a proper configuration of virtual vertices, and high accuracy is expected with a suitable set of simulation parameters. The proposed model was verified by the grain growth simulation using adequately determined parameters for the artificially generated specimens with 5 040 grains.

引用

页码：1847 / 1856

页数：10

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