| Structure refinement of pure Mg under pulsed magnetic field | |
| B. Wang; Y. S. Yang; J. Zhou; W. Tong | |
| 2011 | |
| 发表期刊 | Materials Science and Technology
 |
| ISSN | 0267-0836 |
| 卷号 | 27期号:1页码:176-179 |
| 摘要 | A pulsed magnetic field (PMF) was introduced into the solidification of pure Mg. Fine uniform equiaxed grains are acquired in the whole ingot from the PMF treatment, in contrast with the coarse columnar grains observed in conventional casting, and the average grain size is refined to 260 mu m with a 200 V PMF treatment. Pulsed magnetic field increases melt convection during solidification, and the violent agitation causes warmer liquid to fracture the tip of columnar dendrites or to break off dendrite branches to promote the formation of an equiaxed structure, with the broken pieces transported into the bulk liquid acting as nuclei. In addition, the uniform temperature field resulting from the stirring increases the likelihood of nuclei survival. The Joule heat effect also participates in the structure refinement. The pure Mg produced with a 200 V PMF treatment exhibits improved mechanical properties, such as the ultimate compressive strength (227 MPa) and fracture strain (33.2%). |
| 部门归属 | [wang, b.; yang, y. s.; zhou, j.; tong, w.] chinese acad sci, inst met res, shenyang 110016, peoples r china.;yang, ys (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china;ysyang@imr.ac.cn |
| 关键词 | Structure Refinement Pulsed Magnetic Field Pure Mg Solidification Electromagnetic Vibrations Microstructural Refinement Magnesium Alloys Al Aluminum Billets |
| URL | 查看原文 |
| WOS记录号 | WOS:000285870400029 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.imr.ac.cn/handle/321006/30716 |
| 专题 | 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. Zhou,et al. Structure refinement of pure Mg under pulsed magnetic field[J]. Materials Science and Technology,2011,27(1):176-179. |
| APA | B. Wang,Y. S. Yang,J. Zhou,&W. Tong.(2011).Structure refinement of pure Mg under pulsed magnetic field.Materials Science and Technology,27(1),176-179. |
| MLA | B. Wang,et al."Structure refinement of pure Mg under pulsed magnetic field".Materials Science and Technology 27.1(2011):176-179. |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| Structure refinement（288KB） | 开放获取 | -- | ||||
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