Thermo-Electric-Magnetic Hydrodynamics in Solidification: In Situ Observations and Theory

被引:23
作者
Fautrelle, Y. [1 ]
Wang, J. [2 ]
Salloum-Abou-Jaoude, G. [3 ,4 ]
Abou-Khalil, L. [3 ,4 ]
Reinhart, G. [3 ,4 ]
Li, X. [2 ]
Ren, Z. M. [2 ]
Nguyen-Thi, H. [3 ,4 ]
机构
[1] Grenoble Inst Technol, SIMAP EPM, 1130 Rue Piscine BP 75 ENSEEG, F-38402 St Martin Dheres, France
[2] Shanghai Univ, Dept Mat Sci & Engn, State Key Lab Adv Special Steel, Shanghai 200072, Peoples R China
[3] Aix Marseille Univ, IM2NP, UMR 7334, Campus Sci St Jerome,Case 142, F-13397 Marseille 20, France
[4] CNRS, Campus Sci St Jerome,Case 142, F-13397 Marseille 20, France
关键词
SOLID-LIQUID INTERFACE; DIRECTIONAL SOLIDIFICATION; THERMOELECTRIC MAGNETOHYDRODYNAMICS; METALLIC ALLOYS; REAL-TIME; CONVECTION; FIELD; MICROSTRUCTURE;
D O I
10.1007/s11837-018-2777-4
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Solidification of liquid metals contains all the ingredients for the development of the thermo-electric (TE) effect, namely liquid-solid interface and temperature gradients. The combination of TE currents with a superimposed magnetic field gives rise to thermo-electromagnetic (TEM) volume forces acting on both liquid and solid. This results in the generation of fluid flows, which considerably modifies the morphology of the solidification front as well as that of the mushy zone. TEM forces also act on the solid and cause both fragmentation of dendrite branches and a movement of equiaxed grains in suspension. These phenomena have already been unveiled by post-mortem analysis of samples, but they can be analyzed in more detail by using x-ray in situ and real-time observations. Here, we present conclusive evidence of all the aforementioned effects thanks to in situ observations of Al-Cu alloy solidification under static magnetic field.
引用
收藏
页码:764 / 771
页数:8
相关论文
共 28 条
  • [1] ALBOUSSIERE T, 1991, CR ACAD SCI II, V313, P749
  • [2] THERMOELECTRIC EFFECTS ON ELECTRICALLY CONDUCTING PARTICLES IN LIQUID METAL
    Baltaretu, F.
    Wang, J.
    Letout, S.
    Ren, Z. M.
    Li, X.
    Budenkova, O.
    Fautrelle, Y.
    [J]. MAGNETOHYDRODYNAMICS, 2015, 51 (01): : 45 - 55
  • [3] Analysis by synchrotron X-ray radiography of convection effects on the dynamic evolution of the solid-liquid interface and on solute distribution during the initial transient of solidification
    Bogno, A.
    Nguyen-Thi, H.
    Buffet, A.
    Reinhart, G.
    Billia, B.
    Mangelinck-Noel, N.
    Bergeon, N.
    Baruchel, J.
    Schenk, T.
    [J]. ACTA MATERIALIA, 2011, 59 (11) : 4356 - 4365
  • [4] Magnetohydrodynamics in materials processing
    Davidson, PA
    [J]. ANNUAL REVIEW OF FLUID MECHANICS, 1999, 31 : 273 - 300
  • [5] Thermoelectromagnetic convection in vertical Bridgman grown germanium-silicon
    Dold, P
    Szofran, FR
    Benz, KW
    [J]. JOURNAL OF CRYSTAL GROWTH, 2006, 291 (01) : 1 - 7
  • [6] Experimental and Numerical Investigations of the Multi-scale Thermoelectromagnetic Convection on the Microstructure during Directionally Solidified Sn-5wt%Pb Alloys
    Du, Dafan
    Fautrelle, Yves
    Ren, Zhongming
    Moreau, Rene
    Li, Xi
    [J]. ISIJ INTERNATIONAL, 2017, 57 (05) : 833 - 840
  • [7] Fautrelle Y., 2017, SOLIDIFICATION PROCE
  • [8] Faxén H, 1922, ANN PHYS-BERLIN, V68, P89
  • [9] DENSITIES OF ALUMINUM-RICH ALUMINUM-COPPER ALLOYS DURING SOLIDIFICATION
    GANESAN, S
    POIRIER, DR
    [J]. METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1987, 18 (04): : 721 - 723
  • [10] Hurle D.T.J., 1994, USE MAGNETIC FIELD M