• CN:11-2187/TH
  • ISSN:0577-6686

›› 2000, Vol. 36 ›› Issue (9): 52-54.

• 论文 • 上一篇    下一篇

灰铸铁非平衡凝固过程的微观数值模拟

张云鹏;陈铮;苏俊义   

  1. 西北工业大学材料科学与工程学院;西安交通大学
  • 发布日期:2000-09-15

MICRO-MODELING ON NON-EQUILIBRIUM SOLIDIFICATION PROCESS OF GRAY IRON

Zhang Yunpeng;Chen Zheng;Su Junyi   

  1. Northwestern Polytechnical University Xi'an Jiaotong University
  • Published:2000-09-15

摘要: 根据灰铸铁非平衡凝固过程的特点,提出了数值模拟其凝固组织的一套方法,其中主要包括奥氏体枝晶生长过程体积分数的计算以及晶粒接触因素的处理。该方法经以样杯中浇注的试块为对象进行试验验证,模拟得到的冷却曲线、奥氏体体积分数及共晶团体积粒子数均与实测结果取得了较好的一致。

关键词: 非平衡凝固, 灰铸铁, 微观数值模拟

Abstract: According to the characteristic of non-equilibrium solidification process of gray iron, a set of method for modeling its solidified structure, and the method contained calculating volume fraction of dendritic austenite and treatment of grain impingement is proposed. The method is verified with a specimen poured in a sample cup, and the result shows that cooling curve, dendritic austenite fraction and eutectic cell density by modeling are in good agreement with data by experiment.

Key words: Gray iron, Micro-modeling, Non-equilibrium solidification

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