• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Conference on Solidification and Gravity; 20040906-09; Miskolc-Lillafured(HU) >Segregation with Spongy Deformation of the Mushy Zone during Solidification of the Skin of Steel Cast Products
【24h】

Segregation with Spongy Deformation of the Mushy Zone during Solidification of the Skin of Steel Cast Products

机译：铸钢产品表皮凝固过程中软膏区海绵状变形的偏析

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The general aim of this work is to build a model of solidification that includes all pertinent elementary phenomena, which may contribute to the segregation in the sub-surface region of continuously cast metal. This paper presents a first attempt to take into account simultaneously: the solidification shrinkage, the thermal contraction of both the liquid and solid phases, the thermomechanical deformation of the mushy zone, and the undercooling at the growth front.rnMathematical expressions of segregation rates occurring during solidification with spongy deformation of an alloyed mushy zone have been derived from classical mass balance equations. The main result is a mathematical expression for the local macrosegregation rate. This expression is combined with a numerical one-dimensional model of the heat flow previously developed for the study of directional solidification of an undercooled mushy zone using an Eulerian frame of reference. In addition to inverse segregation close to the mold, segregation induced by deformation and growth undercooling of the columnar growth front are predicted. Application to the solidification of the skin of steel cast products agrees qualitatively well with experimental observations.
机译：这项工作的总体目的是建立一个包括所有相关基本现象的凝固模型，这可能会导致连续铸造金属的次表面区域偏析。本文提出了同时考虑的首次尝试：凝固收缩，液相和固相的热收缩，糊状区的热机械变形以及生长前沿的过冷.rn在分离过程中出现的偏析率的数学表达式合金糊状区海绵状变形的凝固已经从经典的质量平衡方程中得出。主要结果是局部宏观偏析率的数学表达式。该表达式与先前为使用欧拉基准框架研究过冷糊状区域的定向凝固而开发的热流数值一维模型相结合。除了靠近模具的反向偏析外，还预测了由柱状生长前沿的变形和生长过冷引起的偏析。在铸钢皮的凝固中的应用与实验观察在质量上完全吻合。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号