English

应用科学学报 ›› 2004, Vol. 22 ›› Issue (4): 523-527.

• 论文 • 上一篇    下一篇

耦合相图计算的凝固过程显微偏析形成数值模拟

刘永刚1, 陈光1, 孙瑜2, 孙国雄2   

  1. 1 南京理工大学材料科学与工程系 江苏南京 210094;
    2 东南大学机械系 江苏南京 210096
  • 收稿日期:2003-08-16 修回日期:2003-10-31 出版日期:2004-12-31 发布日期:2004-12-31
  • 作者简介:刘永刚(1976-),男,江苏徐州人,博士,讲师.
  • 基金资助:
    国家自然科学基金资助项目(59974011)

The Simulation of the Forming of Microsegregaiton During Solidification Process in the Calculation of Coupling Phase Diagrams

LIU Yong-gang1, CHEN Guang1, SUN Yu2, SUN Guo-xiong2   

  1. 1. Department of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China;
    2. Department of Mechanical Engineering, Southeast University, Nanjing 210096, China
  • Received:2003-08-16 Revised:2003-10-31 Online:2004-12-31 Published:2004-12-31

PDF

74

被引次数

1

摘要： 建立了耦合热力学相图计算的显微偏析宏、微观模型并论述了其主要数值方法,以水冷铜型内冷却的Al-4.5%Cu合金铸锭为例仿真了其凝固过程中显微偏析的形成,并与试验结果进行了对照,获得了与试验结果吻合较好的模拟结果,验证了模型和算法的正确性.

关键词: 相图计算, 显微偏析, 数值模拟, 耦合

Abstract: Macro-and micro-models of microsegregation simulation are suggested and the primary numerical methods are discussed at the same time. As an example, microsegregation simulation of Al-4.5%Cu binary alloy in water-cooled Cu mould is also presented. The comparison of simulation results and experiments indicates that these two results were in complete agreement. This verifies the validity and the applicability of the models and the numerical methods.

Key words: microsegregation, simulation, calculation of phase diagrams, coupling

中图分类号: