Magnetic field enhanced phase precipitation in an undercooled Co-Sn alloy
Magnetic field enhanced phase precipitation in an undercooled Co-Sn alloy
复制标题
过冷 Co-Sn 合金中的磁场增强相沉淀
DOI：
10.1016/j.matlet.2014.10.115
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发表时间：
2015-01-15
影响因子：
3
通讯作者：
Beaugnon, Eric
中科院分区：
文献类型：
--
作者：
Wang, Jun;Li, Jinshan;Beaugnon, Eric
研究了过冷Co 76 Sn 24亚共晶合金在无磁场和有磁场条件下初生相的生长。结果表明，外加磁场对初生α-Co枝晶析出的临界过冷度有很大影响。随着磁场强度的增加，初生α Co枝晶相消失的临界过冷度由无磁场时的25 K增加到12 T磁场时的100 K以上。基于强磁场下退磁效应引起的曲率过冷度增大，导致初生α Co枝晶生长速度加快，讨论了临界过冷度的变化。(C)2014爱思唯尔有限公司版权所有。
The primary phase growth in undercooled Co76Sn24 hypoeutectic alloy without and within magnetic field has been studied. Results show that the critical undercooling for the precipitation of primary alpha Co dendrite phase is strongly affected by the external magnetic field. With the increasing magnetic field intensity, the critical undercooling for the disappearance of primary alpha Co dendrite phase will be increased from 25 K without magnetic field to more than 100 K with 12 T magnetic field. The variation of the critical undercooling is discussed based on the enhanced growth velocity of primary alpha Co dendrites caused by the increased curvature undercooling due to the demagnetizing effect in high magnetic field. (C) 2014 Elsevier B.V. All rights reserved.