| 半固态流变成形中浆料制备的基本思路 |
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| 引用本文： | 郭洪民,杨湘杰.半固态流变成形中浆料制备的基本思路[J].铸造,2006,55(8):794-798,802. |
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| 作者姓名： | 郭洪民 杨湘杰 |
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| 作者单位： | 1. 南昌大学材料科学与工程学院,江西,南昌,330047
2. 南昌大学机电工程学院,江西,南昌,330029 |
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| 基金项目： | 国家高技术研究发展计划(863计划);江西省自然科学基金;江西省教育厅科研项目 |
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| 摘 要： | 半固态流变成形是目前研究的重点，而优质半固态浆料的制备技术是降低成本，促使流变成形技术早日实现工业应用的关键因素。从晶粒来源和晶粒生长两个角度深入探讨了树枝晶破碎球化技术、控制形核抑制树枝晶生长技术．总结出流变成形中浆料制备的基本思路。在此基础上着重介绍了“剪切低温浇注式”半固态浆料制备工艺。
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| 关 键 词： | 半固态成形 凝固 形核 晶粒生长 |
| 文章编号： | 1001-4977（2006）08-0794-06 |
| 收稿时间： | 2006-02-13 |
| 修稿时间： | 2006-02-132006-04-10 |
Fundamental Principles for Semi-solid Slurry Fabrication in Rheo-forming Techniques |
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| GUO Hong-min,YANG Xiang-jie.Fundamental Principles for Semi-solid Slurry Fabrication in Rheo-forming Techniques[J].Foundry,2006,55(8):794-798,802. |
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| Authors: | GUO Hong-min YANG Xiang-jie |
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| Affiliation: | 1. Department of Materials Science and Engineering, Nanchang University, Nanchang 330047 Jiangxi, China; 2. Department of Mechanical and Electronic Engineering, Nanchang University, Nanchang 330029, Jiangxi, China |
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| Abstract: | The current effort of semi-solid processing is focused on the rheo-forming technique. But, simpler and more economical method for producing semi-solid slurry is one of the most important factors to achieve cost effective and make rheo-forming commercialized in industry application. From the origin of grain and grain growth, two different routes to obtain semi-solid slurry were deeply discussed, such as dendrite fracture, controlled nucleation and limited growth. The fundamental principles through which sound semi-solid slurry can be effectively obtained were summarized. Finally, we presented a simple rheocasting process, termed "Low Superheat Pouring with a Shear Field". |
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| Keywords: | semi-solid metal processing solidification nucleation grain growth |
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