| 深过冷Ni-P共晶合金凝固动力学分析 |
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| 引用本文： | 蒲健,王敬丰,肖建中.深过冷Ni-P共晶合金凝固动力学分析[J].华中科技大学学报(自然科学版),2003,31(8):62-64. |
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| 作者姓名： | 蒲健 王敬丰 肖建中 |
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| 作者单位： | 华中科技大学模具技术国家重点实验室 |
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| 基金项目： | 华中科技大学校基金资助项目 |
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| 摘 要： | 根据经典的形核和生长理论，通过实验分析了深过冷Ni-P共晶合金的凝固行为．实验发现，深过冷Ni-P共晶合金的凝固组织由粒状的共晶团和棒状的规则共晶所组成．随过冷度的增加，共晶团的组织逐渐细化，同时深过冷熔体晶核生长速率很大，异质形核在凝固过程中起控制性的作用．深过冷熔体的单点形核和长大现象作为特例用以描述界面的生长速率对其凝固组织的影响。
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| 关 键 词： | Ni－P共晶合金 深过冷 形核 动力学 |
| 文章编号： | 1671-4512(2003)08-0062-03 |
| 修稿时间： | 2003年1月24日 |
Solidification kinetics of high undercooled Ni-P eutectic alloys |
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| Pu Jian Wang Jingfeng Xiao Jianzhong Pu Jian Doctoral Candidate,State Key Lab of Plastic Forming Simulation and Die & Mould Tech.,Huazhong Univ. of Sci.& Tech.,Wuhan ,China..Solidification kinetics of high undercooled Ni-P eutectic alloys[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2003,31(8):62-64. |
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| Authors: | Pu Jian Wang Jingfeng Xiao Jianzhong Pu Jian Doctoral Candidate State Key Lab of Plastic Forming Simulation and Die & Mould Tech Huazhong Univ of Sci& Tech Wuhan China |
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| Institution: | Pu Jian Wang Jingfeng Xiao Jianzhong Pu Jian Doctoral Candidate,State Key Lab of Plastic Forming Simulation and Die & Mould Tech.,Huazhong Univ. of Sci.& Tech.,Wuhan 430074,China. |
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| Abstract: | The solidification of high undercooled Ni P eutectic alloy was analyzed by classical nucleation and growth theory. The experimental results indicated that solidification microstructure of undercooled Ni P eutectic alloy was both particle like eutectic groups and regular eutectic structure. With undercooling of melts increasing, the microstructure of eutectic group was gradually refined. When growth velocity rate of nuclei was very large, heterogeneous nucleation would be main nucleation mode. The single nucleation and growth of undercooled melt were used as an example to describe the effect of growth velocity rate of interface on microstructure. |
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| Keywords: | Ni P eutectic alloy high undercooling nucleation kinetics |
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