Non-monotonic changes in critical solidification rates for stability of liquid-solid interfaces with static magnetic fields
Non-monotonic changes in critical solidification rates for stability of liquid-solid interfaces with static magnetic fields
复制标题
静磁场下液-固界面稳定性的临界凝固速率的非单调变化
DOI：
10.1038/srep20598
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发表时间：
2016-02
影响因子：
4.6
通讯作者：
Liaw P. K.
中科院分区：
文献类型：
--
作者：
Ren W. L.;Fan Y. F.;Feng J. W.;Zhong Y. B.;Yu J. B.;Ren Z. M.;Liaw P. K.
我们报道了液 - 固界面稳定性的临界凝固速率对磁场的依赖性。对于一定的温度梯度，临界凝固速率首先增大，然后减小，随后又增大。
We report the magnetic field dependence of the critical solidification rate for the stability of liquid-solid interfaces. For a certain temperature gradient, the critical solidification rate first increases, then decreases, and subsequently increases with increasing magnetic field. The effect of the magnetic field on the critical solidification rate is more pronounced at low than at high temperature gradients. The numerical simulations show that the magnetic-field dependent changes of convection velocity and contour at the interface agree with the experimental results. The convection velocity first increases, then decreases, and finally increases again with increasing the magnetic field intensity. The variation of the convection contour at the interface first decreases, then increases slightly, and finally increases remarkably with increasing the magnetic field intensity. Thermoelectromagnetic convection (TEMC) plays the role of micro-stirring the melt and is responsible for the increase of interface stability within the initially increasing range of magnetic field intensity. The weak and significant extents of the magneto-hydrodynamic damping (MHD)-dependent solute build-up at the interface front result, respectively, in the gradual decrease and increase of interfacial stability with increasing the magnetic field intensity. The variation of the liquid-side concentration at the liquid-solid interface with the magnetic field supports the proposed mechanism.
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DOI：
10.1007/bf02656826
发表时间：
1991-02
期刊：
Metallurgical Transactions A
影响因子：
--
作者：
R. Trivedi;V. Seetharaman;M. Eshelman
通讯作者：
R. Trivedi;V. Seetharaman;M. Eshelman
影响因子：
1.8
作者：
S. Yeşilyurt;L. Vujisić;S. Motakef;F. Szofran;M. Volz
通讯作者：
S. Yeşilyurt;L. Vujisić;S. Motakef;F. Szofran;M. Volz
DOI：
10.1016/s0921-5093(00)00767-x
发表时间：
2000-08
影响因子：
6.4
作者：
P. Gillon
通讯作者：
P. Gillon
影响因子：
1.8
作者：
CHANG, CJ;BROWN, RA
通讯作者：
BROWN, RA
DOI：
10.1111/j.1749-6632.1983.tb19479.x
发表时间：
1983-05
影响因子：
5.2
作者：
D. Hurle;E. Jakeman;A. Wheeler
通讯作者：
D. Hurle;E. Jakeman;A. Wheeler