Effect of cooling rates on the dendritic morphology transition of Mg-6Gd alloy by in situ X-ray radiography
文献类型：期刊论文
| 作者 | Wang, YB; Peng, LM; Ji, YZ; Chen, XX; Wang, CL; Wu, YJ; Fu, YA; Chen, LQ |
| 刊名 | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2018 |
| 卷号 | 34期号:7页码:1142-1148 |
| 关键词 | Directional Solidification Ni-alloys Cu Alloy Evolution Growth Tomography Convection Interface Transport |
| ISSN号 | 1005-0302 |
| DOI | 10.1016/j.jmst.2017.11.047 |
| 文献子类 | 期刊论文 |
| 英文摘要 | The effect of cooling rate on the transition of dendrite morphology of a Mg-6Gd (wt%) alloy was semiquantitatively analyzed under a constant temperature gradient by using synchrotron X-ray radiographic technique. Results show that equiaxed dendrites, including exotic 'butterfly-shaped' dendrite morphology, dominate at high cooling rate (>1 K/s). When the cooling rate decreases in the range of 0.5-1 K/s, the equiaxed-to-columnar transition takes place, and solute segregates at the center of two long dendrite arms (LDA) of the 'butterfly-shaped' dendrite. When the cooling rate is lower than 0.3 K/s, directional solidification occurs and the columnar dendritic growth direction gradually rotates from the crystalline axis to the thermal gradient direction with an increase in cooling rate. Meanwhile, interface moves faster but the dendrite arm spacing decreases. Floating, collision and rotation of dendrites under convection were also studied in this work. (C) 2018 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology. |
| 语种 | 英语 |
| WOS记录号 | WOS:000434132800011 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/28978]  |
| 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.Wang, YB 2.Peng, LM 3.Ji, YZ 4.Chen, XX 5.Wang, CL 6.Wu, YJ 7.Fu, YA 8.Chen, LQ |
| 推荐引用方式 GB/T 7714 | Wang, YB,Peng, LM,Ji, YZ,et al. Effect of cooling rates on the dendritic morphology transition of Mg-6Gd alloy by in situ X-ray radiography[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2018,34(7):1142-1148. |
| APA | Wang, YB.,Peng, LM.,Ji, YZ.,Chen, XX.,Wang, CL.,...&Chen, LQ.(2018).Effect of cooling rates on the dendritic morphology transition of Mg-6Gd alloy by in situ X-ray radiography.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,34(7),1142-1148. |
| MLA | Wang, YB,et al."Effect of cooling rates on the dendritic morphology transition of Mg-6Gd alloy by in situ X-ray radiography".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 34.7(2018):1142-1148. |
入库方式： OAI收割
来源：上海应用物理研究所
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