Grain refinement effect of a pulsed magnetic field on as-cast superalloy K417
文献类型：期刊论文
| 作者 | X. P. Ma ; Y. J. Li ; Y. S. Yang |
| 刊名 | Journal of Materials Research
 |
| 出版日期 | 2009 |
| 卷号 | 24期号:8页码:2670-2676 |
| 关键词 | electromagnetic vibrations microstructural refinement stainless-steel alloys metals al |
| ISSN号 | 0884-2914 |
| 中文摘要 | The grain refinement effect of a pulsed magnetic field on superalloy K417 was studied. The experimental results show that fine equiaxed grains are acquired with proper thermal control under the pulsed magnetic field. The refinement effect of the pulsed magnetic field is affected by the melt cooling rate and the melt superheating. The refinement effect of the pulsed magnetic field is attributed to the dissociation of nuclei from the mold wall by melt vibration and the subsequent dispersion of nuclei by melt convection. The Joule heat and the melt convection caused by the pulsed magnetic field may defer the formation of solidified shell, which prolongs the continuous refinement process. The decrease of melt cooling rate reduces the number of nuclei produced on the mold wall but prolongs the duration for the nuclei to depart from the mold wall and disperse in the melt, which enhances the refinement effect of the pulsed magnetic field. The increase of melt superheating lessens the survival probability of the nuclei in the melt, which weakens the refinement effect of the pulsed magnetic field. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/32189]  |
| 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 | X. P. Ma,Y. J. Li,Y. S. Yang. Grain refinement effect of a pulsed magnetic field on as-cast superalloy K417[J]. Journal of Materials Research,2009,24(8):2670-2676. |
| APA | X. P. Ma,Y. J. Li,&Y. S. Yang.(2009).Grain refinement effect of a pulsed magnetic field on as-cast superalloy K417.Journal of Materials Research,24(8),2670-2676. |
| MLA | X. P. Ma,et al."Grain refinement effect of a pulsed magnetic field on as-cast superalloy K417".Journal of Materials Research 24.8(2009):2670-2676. |
入库方式： OAI收割
来源：金属研究所
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