计算物理 ›› 2013, Vol. 30 ›› Issue (4): 577-581.

• 论文 • 上一篇    下一篇

晶体相场方法模拟纳米孪晶结构

高英俊1,2, 王江帆1, 罗志荣1, 卢强华1, 刘瑶1   

  1. 1. 广西大学物理科学与工程技术学院, 南宁 530004;
    2. 中国科学院国际材料物理中心, 沈阳 110016
  • 收稿日期:2012-08-29 修回日期:2012-12-10 出版日期:2013-07-25 发布日期:2013-07-25
  • 作者简介:高英俊(1962-),男,教授,博士生导师,主要从事光电新材料设计及计算机模拟研究,E-mail:gaoyj@gxu.edu.cn
  • 基金资助:
    国家自然科学基金(51161003,50661001);广西自然科学基金重点项目(2012GXNSFDA053001);广西大学科研基金(XJZ110611)资助项目

Nano-twin Structure Simulation with Phase Field Crystal Method

GAO Yingjun1,2, WANG Jiangfan1, LUO Zhirong1, LU Qianghua1, LIU Yao1   

  1. 1. College of Physics Science and Engineering, Guangxi University, Nanning 530004, China;
    2. International Center for Material Physics, Chinese Academy of Sciences, Shenyang 110016, China
  • Received:2012-08-29 Revised:2012-12-10 Online:2013-07-25 Published:2013-07-25

摘要: 应用双模晶体相场模型,模拟共格纳米孪晶结构.结果表明:球状晶粒生长成的共格孪晶片层,在共格面上的原子排列有变形,容易出现位错;条状晶粒凝固生长成的共格孪晶界,比用球状晶粒长大生成的共格孪晶界的原子排列整齐.应用晶体相场模型,可以精确计算纳米孪晶带的厚度,设计和控制带内的原子层数,实现人工操纵纳米共格孪晶片层结构,指导实验研究纳米孪晶结构及其与性能的关系.

关键词: 晶体相场, 纳米晶, 孪晶界, 模拟

Abstract: Two-mode phase-field-crystal (PFC) method is used to simulate coherent boundary of nano-twins.It shows that atomic arrangement in coherent twin-grain boundary is not in good order as sphere grains grow and run into each other to form dislocations.Atomic arrangement in coherent twin-grain boundary as band-shape grains colliding each other is more tidy.For designing and controlling numbers of atomic layer in nano-twins,PFC model can be used to realize manipulation for coherent nano-twins structure.It is significant for guiding experiment and revealing nano-twins structure and properties.

Key words: phase field crystal, nanocrystalline, nano-twins boundary, simulation

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