Heat transfer and grain refining mechanism during melt treatment by cooling sloping plate
文献类型：期刊论文
| 作者 | Guan Renguo; Zhao Zhanyong; Chao Runze; Huang Hongqian; Liu Chunming |
| 刊名 | ACTA METALLURGICA SINICA-ENGLISH LETTERS
 |
| 出版日期 | 2012 |
| 卷号 | 25期号:4页码:320-328 |
| 关键词 | ALUMINUM-ALLOY MICROSTRUCTURE EVOLUTION STATE Grain refining Nucleation Cooling rate Sloping plate Temperature boundary layer |
| ISSN号 | 1006-7191 |
| 其他题名 | Heat transfer and grain refining mechanism during melt treatment by cooling sloping plate |
| 英文摘要 | Heat transfer of flow melt and grain refining mechanism during melt treatment by the cooling sloping plate were investigated. The results show that the cooling sloping plate can refine riot only grains of alloys but also can obviously refine pure metal. Cooling ability of the plate is the key factor that induces grain refining, the plate material and the flow amount can affect cooling rate of the melt and thus affect refining effectiveness. The cooling rate of the melt on the cooling sloping plate is much faster than that of the conventional casting process, which can reach 1000 K/s and belongs to meta-rapid solidification scope. The thickness of the temperature boundary layer is much larger than that of the velocity boundary layer on the sloping plate, but the temperature gradient is small in the temperature boundary layer. Under strong cooling action by the cooling plate, most parts of the melt on the plate surface can form undercooling, which causes continuous eruptive nucleation, this is the main grain refining mechanism, and the heterogeneous nucleation on the plate surface is a helpful supplement for the nucleation. |
| 资助项目 | [National Natural Science Foundation of China] ; [Fok Ying Tong Education Foundation] ; [National Basic Research Program of China (973 program)] |
| 语种 | 英语 |
| CSCD记录号 | CSCD:4621353 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/144990]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 作者单位 | 中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | Guan Renguo,Zhao Zhanyong,Chao Runze,et al. Heat transfer and grain refining mechanism during melt treatment by cooling sloping plate[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2012,25(4):320-328. |
| APA | Guan Renguo,Zhao Zhanyong,Chao Runze,Huang Hongqian,&Liu Chunming.(2012).Heat transfer and grain refining mechanism during melt treatment by cooling sloping plate.ACTA METALLURGICA SINICA-ENGLISH LETTERS,25(4),320-328. |
| MLA | Guan Renguo,et al."Heat transfer and grain refining mechanism during melt treatment by cooling sloping plate".ACTA METALLURGICA SINICA-ENGLISH LETTERS 25.4(2012):320-328. |
入库方式： OAI收割
来源：金属研究所
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