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| 连续冷却和搅拌条件下树枝晶向粒状晶转变时间的估算 | |
| 引用本文： | 邢书明,曾大本,胡汉起,马静,李亚敏. 连续冷却和搅拌条件下树枝晶向粒状晶转变时间的估算[J]. 中国有色金属学报, 2001, 11(Z2): 234-237 |
| 作者姓名： | 邢书明 曾大本 胡汉起 马静 李亚敏 |
| 作者单位： | 1. 北方交通大学,机电学院,北京,100044 2. 清华大学,机械系,北京,100084 3. 北京科技大学,铸造研究所,北京,100083 4. 河北科技大学,材料学院,石家庄,050054 |
| 基金项目： | 河北省自然科学基金资助项目(599281) |
| 摘 要： | 介绍了连续冷却和搅拌条件下树枝晶向粒状晶转变的填充间隙(FAS)和颈缩熔断(NMAR)两种机制, 并通过理论推导得到了可以用来计算其转变时间的数学公式. 两种机制下的转变时间计算结果与实验结果吻合较好. |
| 关 键 词： | 半固态金属 树枝晶 粒状晶 演变时间 |
| 文章编号： | 1004-0609(2001)S2-0234-04 |
| 修稿时间： | 2001-03-12 |
Evolution time calculation of dendrite to granular particle during continuous cooling and stirring process |
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| XING Shu ming ,ZENG Da beng ,HU Han qi ,MA Jing ,LI Ya min. Evolution time calculation of dendrite to granular particle during continuous cooling and stirring process[J]. The Chinese Journal of Nonferrous Metals, 2001, 11(Z2): 234-237 | |
| Authors: | XING Shu ming ZENG Da beng HU Han qi MA Jing LI Ya min |
| Affiliation: | XING Shu ming 1,ZENG Da beng 2,HU Han qi 3,MA Jing 4,LI Ya min 4 |
| Abstract: | Two evolution mechanisms, filling arm spacing and necking melting arm's root, of the primary solid from dendrite to granular particle under the condition of strong stirring and continuous cooling were theoretically introduced. The corresponding dynamics models were mathematically built up so as to determine their evolution time. The calculated results of the evolution time of the filling arm spacing and the necking melting arm's root agree well with the experiment results. |
| Keywords: | semisolid metal dendrite granular particle evolution time |
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