The effect of local thermo-solutal convection on dendrite fragments at variable cross section
文献类型：期刊论文
| 作者 | Li, FG; Yin, FC; Zhang, J; Fu, YN; Sun, BD |
| 刊名 | MATERIALS RESEARCH EXPRESS
 |
| 出版日期 | 2019 |
| 卷号 | 6期号:11页码:- |
| 关键词 | SYNCHROTRON X-RAY TO-EQUIAXED TRANSITION STRAY CRYSTAL-FORMATION IN-SITU OBSERVATION FRECKLE FORMATION DIRECTIONAL SOLIDIFICATION MICROSTRUCTURE EVOLUTION WITHDRAWAL RATE SN-BI COLUMNAR |
| ISSN号 | 2053-1591 |
| DOI | 10.1088/2053-1591/ab4dd8 |
| 文献子类 | 期刊论文 |
| 英文摘要 | The dendrite fragments formation process of hypoeutectic Al-Cu alloy at variable cross section was observed by synchrotron radiation imaging. The results show that the variable cross section structure causes a series of chain reactions among the solidification parameters and dendrite characteristic parameters. It can induce the sudden decrease of concentration gradient, constitutional undercooling and dendrite growth rate. The solute enrichment process at the variable cross section can be divided into two stages: the rapid solute enrichment stage and the slow solute enrichment stage. The dendrite fragments occur in the rapid solute enrichment stage is satisfying the Rayleigh number based fragmentation criterion. The purpose of establishing the relationship between Rayleigh number and dendrite growth rate is to optimize the single crystal production process window. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/32242]  |
| 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 |
| 作者单位 | 1.Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201800, Peoples R China 2.Xiangtan Univ, Mat Sci & Engn Postdoctoral Res Stn, Xiangtan 411105, Peoples R China; 3.Xiangtan Univ, Sch Mat Sci & Engn, Xiangtan 411105, Peoples R China; 4.Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai 200240, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Li, FG,Yin, FC,Zhang, J,et al. The effect of local thermo-solutal convection on dendrite fragments at variable cross section[J]. MATERIALS RESEARCH EXPRESS,2019,6(11):-. |
| APA | Li, FG,Yin, FC,Zhang, J,Fu, YN,&Sun, BD.(2019).The effect of local thermo-solutal convection on dendrite fragments at variable cross section.MATERIALS RESEARCH EXPRESS,6(11),-. |
| MLA | Li, FG,et al."The effect of local thermo-solutal convection on dendrite fragments at variable cross section".MATERIALS RESEARCH EXPRESS 6.11(2019):-. |
入库方式： OAI收割
来源：上海应用物理研究所
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