计算物理 ›› 2001, Vol. 18 ›› Issue (1): 67-71.

• 论文 • 上一篇    下一篇

液态金属Ni3Al凝固过程中结构转变的分子动力学模拟

谷廷坤1, 齐元华2, 秦敬玉3   

  1. 1. 山东大学材料液态结构及其遗传性教育部重点实验室, 山东 济南 250061;
    2. 山东大学数理系, 山东 济南 250061;
    3. 山东大学材料科学与工程学院, 山东 济南 250061
  • 收稿日期:1999-10-15 修回日期:2000-02-16 出版日期:2001-01-25 发布日期:2001-01-25
  • 作者简介:谷廷坤(1966-),男,山东花平,讲师,主要从事原子与分子结构的理论计算.
  • 基金资助:
    教育部访问学者资助项目

MOLECULAR DYNAMICS SIMULATIONS OF SOLIDIFICATION OF LIQUID Ni3Al

GU Ting-kun1, QI Yuan-hua2, QIN Jing-yu3   

  1. 1. Key Laboratory for Liquid Structure and Heredity of Material, Ministry of Education, Jinan 250061, P R China;
    2. Department of Math and Physics, Shandong University of Technology, Jinan 250061, P R China3. College of Material Science and Engineer, Shandong Uniuersity of Technology, Jinan 250061, P R China;
    3. College of Material Science and Engineer, Shandong Uniuersity of Technology, Jinan 250061, P R China
  • Received:1999-10-15 Revised:2000-02-16 Online:2001-01-25 Published:2001-01-25

摘要: 采用分子动力学模拟方法对液态Ni3Al凝固过程进行了研究,考察了不同冷却速度下液态Ni3Al结构变化特点,原子间相互作用势采用F-S多体势,结构分析采用键取向序和对分析技术.计算结果表明,冷却速度对液态Ni3Al结构转变有重要影响,给出了不同冷却速度下液态Ni3Al结构转变的微观信息.

关键词: F-S多体势, 液态金属, 分子动力学模拟

Abstract: By means of molecular dynamics simulation technique, the rapid solidification processes of Ni3Al are studied with many body potential as atomic interaction.The orientation order parameters and pair analysis technique are used to reveal the structural features, The calculated results indicate that the cooling rate is very important for the liquid Ni3Al solidifies.

Key words: F SN-body potential, liquid metal, molecular dynamics simulation

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