Microstructure refinement of AZ91D alloy solidified with pulsed magnetic field
文献类型：期刊论文
| 作者 | B. Wang ; Y. S. Yang ; J. X. Zhou ; W. H. Tong |
| 刊名 | Transactions of Nonferrous Metals Society of China
 |
| 出版日期 | 2008 |
| 卷号 | 18期号:3页码:536-540 |
| 关键词 | AZ91D magnesium alloy grain refinement pulsed magnetic field solidified microstructure forced electromagnetic vibrations al-si alloys aluminum-alloys magnesium |
| ISSN号 | 1003-6326 |
| 中文摘要 | The effects of pulsed magnetic field on the solidified microstructure of an AZ91D magnesium alloy were investigated. The experimental results show that the remarkable microstructural refinement is achieved when the pulsed magnetic field is applied in the solidification of AZ91D alloy. The average grain size of the as-cast microstructure of AZ91D alloy is refined to 104 Pin. Besides the grain refinement, the morphology of the primary alpha-Mg is changed from dendritic to rosette, then to globular shape with changing the parameters of the pulsed magnetic field. The pulsed magnetic field causes melt convection during solidification, which makes the temperature of the whole melt homogenized, and produces an undercooling zone in front of the liquid/solid interface by the magnetic pressure, which makes the nucleation rate increased and big dendrites prohibited. In addition, primary a-Mg dendrites break into fine crystals, resulting in a refined solidification structure of the AZ91D alloy. The Joule heat effect induced in the melt also strengthens the grain refinement effect and spheroidization of dendrite arms. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/33113]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | B. Wang,Y. S. Yang,J. X. Zhou,et al. Microstructure refinement of AZ91D alloy solidified with pulsed magnetic field[J]. Transactions of Nonferrous Metals Society of China,2008,18(3):536-540. |
| APA | B. Wang,Y. S. Yang,J. X. Zhou,&W. H. Tong.(2008).Microstructure refinement of AZ91D alloy solidified with pulsed magnetic field.Transactions of Nonferrous Metals Society of China,18(3),536-540. |
| MLA | B. Wang,et al."Microstructure refinement of AZ91D alloy solidified with pulsed magnetic field".Transactions of Nonferrous Metals Society of China 18.3(2008):536-540. |
入库方式： OAI收割
来源：金属研究所
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