Calculation of solid-liquid interfacial free energy and its anisotropy in undercooled system

被引：0

作者：

Ling-Kang Wu ^{[1
]}

Qiu-Lin Li ^{[1
,2
]}

Mo Li ^{[3
,4
]}

Ben Xu ^{[1
]}

Wei Liu ^{[1
]}

Ping Zhao ^{[1
]}

Bing-Zhe Bai ^{[1
]}

机构：

[1] Key Laboratory of Advanced Materials of Ministry of Education, School of Materials Science and Engineering,Tsinghua University

[2] Graduate School at Shenzhen, Tsinghua University

[3] State Key Laboratory for Advanced Metals and Materials,University of Science and Technology Beijing

[4] School of Material Science and Engineering, Georgia Institute of Technology

来源：

Rare Metals | 2018年 / 37卷 / 07期

关键词：

Interfacial free energy; Critical nucleus method; Capillary fluctuation method; Undercooled system;

D O I：

暂无

中图分类号：

TB30 [工程材料一般性问题];

学科分类号：

摘要：

The solid-liquid interfacial free energy and its anisotropy are crucial quantities in determining the micros tructure and mechanical properties of materials.However, most researches mainly concerned the solidliquid coexistence at melting point. In this work, two methods, the critical nucleus method(CNM) and the capillary fluctuation method(CFM), were combined to get these quantities in undercooled system by molecular dynamics(MD) simulations. The melting point, Tolman length, interfacial free energy and its anisotropy were calculated, and good consistent results from these two methods are obtained. The results of interfacial free energy obtained by CNM and CFM are 103.79 and102.13 mJ·m-2, respectively, with the error <2%. Meanwhile, both of the methods provide the rank of interfacial free energy by γ100> γ120>γ110> γ112>γ111. The results of the present study are also in good agreement with experimental data and computational data in the literature.

引用

页码：543 / 553

页数：11

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