| Nano-scale dendrites within the conventional dendritic arm | |
| Ma, Xiaoping; Liu, Hongwei; Fu, Paixian; Li, Dianzhong | |
| Corresponding Author | Ma, Xiaoping(xpma@imr.ac.cn) |
| 2021-12-15 | |
| Source Publication | MATERIALS & DESIGN
 |
| ISSN | 0264-1275 |
| Volume | 212Pages:9 |
| Abstract | The microstructures and segregations during solidification have been widely recognized in the past researches. The dendrite (termed as conventional dendrite in this paper) was recognized as the most basic entity for microstructures and microsegregation. Through careful analysis and observation in this paper, new nano-scale dendrites (with dendritic arm spacing about 500 nm) were revealed within the conventional dendritic arm (with dendritic arm spacing about 70 mu m). The conventional dendrites should be recognized as macrosegregation patterns arisen in a subtle porous media. Accordingly, the research entity for microsegregation should change from the conventional dendritic arm to a more subtle entity. During solidification, temperature fluctuations with different directions, periods and intensities will superimpose to induce a dendritic temperature field on multi-scales. Because of differentiated solid frac-tions and liquid compositions, a dendritic macrosegregation field on multi-scales will be induced by the mass transfer. Verified by the in situ and real time observation, the subtle dendrites emerge at the later solidification stage much lower than the equilibrium eutectic temperature. Because nano-scale dendrites were recognized, new solutions were proposed for controlling macrosegregation within the conventional dendritic arm. In a more significant view, the nano-scale dendrites provide the basis for unifying the non-equilibrium solidification and the equilibrium solidification. (C) 2021 The Authors. Published by Elsevier Ltd. |
| Keyword | Solidification Dendrite Microstructures Microsegregation Macrosegregation Multi-scales |
| Funding Organization | Youth Talent Project of Shenyang National Laboratory for Materials Science |
| DOI | 10.1016/j.matdes.2021.110263 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Youth Talent Project of Shenyang National Laboratory for Materials Science[L2019F46] ; Youth Talent Project of Shenyang National Laboratory for Materials Science[TC190A4DA/35] |
| WOS Research Area | Materials Science |
| WOS Subject | Materials Science, Multidisciplinary |
| WOS ID | WOS:000744257300007 |
| Publisher | ELSEVIER SCI LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/173624 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Ma, Xiaoping |
| Affiliation | Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Wenhua Rd 72, Shenyang 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Ma, Xiaoping,Liu, Hongwei,Fu, Paixian,et al. Nano-scale dendrites within the conventional dendritic arm[J]. MATERIALS & DESIGN,2021,212:9. |
| APA | Ma, Xiaoping,Liu, Hongwei,Fu, Paixian,&Li, Dianzhong.(2021).Nano-scale dendrites within the conventional dendritic arm.MATERIALS & DESIGN,212,9. |
| MLA | Ma, Xiaoping,et al."Nano-scale dendrites within the conventional dendritic arm".MATERIALS & DESIGN 212(2021):9. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment