In situ synchrotron X-ray studies of the coupled effects of thermal and solutal supercoolings on the instability of dendrite growth
文献类型：期刊论文
| 作者 | Li, FG; Zhang, J; Dong, Q; Dai, YB; Fu, YA; Xie, HL; Mi, J; Yin, FC; Sun, BD |
| 刊名 | MATERIALS CHARACTERIZATION
 |
| 出版日期 | 2015 |
| 卷号 | 109页码:9—18 |
| 关键词 | DIRECTIONAL SOLIDIFICATION DIFFUSIONAL GROWTH MORPHOLOGY DIAGRAM INTERFACIAL ENERGY ALUMINUM-ALLOYS ANISOTROPY STABILITY CRYSTAL RADIOGRAPHY SIMULATION |
| ISSN号 | 1044-5803 |
| 通讯作者 | Zhang, J (reprint author), Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China. |
| 英文摘要 | Special growth pattern representing unique growth conditions is a vital clue to investigate the morphology evolution mechanism in metallic alloy solidification. The dendrite pattern and growth orientation of dendritic doublons in the hypoeutectic Al-Cu alloy have been studied by synchrotron radiation imaging technology and electron back scatter diffraction. The results show that this kind of doublon is two-dimensional and the secondary arms grow perpendicularly to the primary stem. This doublon morphology can appear as an equiaxed grain, columnar dendrite, or coexist with a regular dendrite. The growth directions of the dendritic doublon tips and the secondary arms are < 110 > and < 001 >, respectively. Rising cooling rate or Cu concentration in the alloys facilitates the formation of the doublonic structure. According to the kinetic morphology diagram of Al-Cu alloys (pattern-dimensionless supercooling-anisotropy) obtained from the experimental data, the dendritic doublon forming region was above the boundary of fractal dendrite and compact dendrite. (C) 2015 Elsevier Inc All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000365365400002 |
| 公开日期 | 2016-03-08 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/24958]  |
| 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 | Li, FG,Zhang, J,Dong, Q,et al. In situ synchrotron X-ray studies of the coupled effects of thermal and solutal supercoolings on the instability of dendrite growth[J]. MATERIALS CHARACTERIZATION,2015,109:9—18. |
| APA | Li, FG.,Zhang, J.,Dong, Q.,Dai, YB.,Fu, YA.,...&Sun, BD.(2015).In situ synchrotron X-ray studies of the coupled effects of thermal and solutal supercoolings on the instability of dendrite growth.MATERIALS CHARACTERIZATION,109,9—18. |
| MLA | Li, FG,et al."In situ synchrotron X-ray studies of the coupled effects of thermal and solutal supercoolings on the instability of dendrite growth".MATERIALS CHARACTERIZATION 109(2015):9—18. |
入库方式： OAI收割
来源：上海应用物理研究所
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