In situ synchrotron X-ray imaging on morphological evolution of dendrites in Sn-Bi hypoeutectic alloy under electric currents
文献类型：期刊论文
| 作者 | Wang, TM ; Zhu, J ; Kang, HJ ; Chen, ZN ; Fu, YN ; Huang, WX ; Xiao, TQ |
| 刊名 | APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
 |
| 出版日期 | 2014 |
| 卷号 | 117期号:3页码:1059—1066 |
| 关键词 | TO-EQUIAXED TRANSITION AL-CU ALLOYS DIRECTIONAL SOLIDIFICATION MAGNETIC-FIELD CURRENT PULSE ELECTROHYDRODYNAMIC INSTABILITY CONDUCTIVITY GRADIENT PURE ALUMINUM FLUID LAYER GROWTH |
| ISSN号 | 0947-8396 |
| 通讯作者 | tmwang@dlut.edu.cn |
| 英文摘要 | The growth behavior and morphological evolution of dendrites in solidifying Sn-Bi alloy under electric currents [e.g., direct current (DC) and electric current pulse (ECP)] are in situ studied using synchrotron radiation X-ray imaging technique. The suppression of dendrite growth, floating and rotation of dendrites, refinement and remelting of dendrites are investigated by analyzing a series of animated images captured during the experiments. The modification mechanisms of dendrite morphology by electric fields are discussed based on the in situ and real-time observations. When DC is imposed on the samples, the growth of dendrites is significantly suppressed due to the effect of Joule heat, and a small dendrite freely flows up and rotates due to the common effect of natural convection. When ECP is imposed in the whole solidification process, the outset of solidification is delayed by Joule heat. And due to the accumulation of undercooling, dendrites suddenly nucleate, grow and finally become fine primary dendrite arm spacing. When ECP is imposed during the crystal growth stage only, the dendrites are remelted at first and then reappear along the original growing trajectories, showing the hereditary feature. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000343911600013 |
| 公开日期 | 2015-03-13 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/14190]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 推荐引用方式 GB/T 7714 | Wang, TM,Zhu, J,Kang, HJ,et al. In situ synchrotron X-ray imaging on morphological evolution of dendrites in Sn-Bi hypoeutectic alloy under electric currents[J]. APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING,2014,117(3):1059—1066. |
| APA | Wang, TM.,Zhu, J.,Kang, HJ.,Chen, ZN.,Fu, YN.,...&Xiao, TQ.(2014).In situ synchrotron X-ray imaging on morphological evolution of dendrites in Sn-Bi hypoeutectic alloy under electric currents.APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING,117(3),1059—1066. |
| MLA | Wang, TM,et al."In situ synchrotron X-ray imaging on morphological evolution of dendrites in Sn-Bi hypoeutectic alloy under electric currents".APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING 117.3(2014):1059—1066. |
入库方式： OAI收割
来源：上海应用物理研究所
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