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| 1 | Investigation of thermoelectric magnetic convection and its effect on solidification structure during directional solidification under a low axial magnetic field显示文摘 | Xi Li Annie Gagnoud Zhongming Ren Yves Fautrelle Rene Moreau | 2009 | Acta Materialia2009，，7： | 3 |
| 2 | Columnar-to-equiaxed transitions in al-based alloys during directional solidification under a high magnetic field显示文摘 | Xi Li Yves Fautrelle Kader Zaidat Annie Gagnoud Zhongming Ren Rene Moreau Yudong Zhang Claude Esling | 2009 | Journal of Crystal Growth2009，，2： | 2 |
| 3 | Dendrite fragmentation and columnar-to-equiaxed transition during directional solidification at lower growth speed under a strong magnetic field显示文摘 | Xi Li Annie Gagnoud Yves Fautrelle Zhongming Ren Rene Moreau Yudong Zhang Claude Esling | 2012 | Acta Materialia2012，，8： | 2 |
| 4 | Investigation of Thermoelectric Magnetic Convection and Its Effect on Solidification Structure During Directional Solidification under a Low Axial Magnetic Field显示文摘 | Li X Gagnoud A Ren Z M | 2009 | Acta Materialia2009，，57： | 1 |
| 5 | Effect of a high magnetic field on the morphological instability and irregularity of the interface of a binary alloy during directional solidification显示文摘 | Xi Li Yves Fautrelle Zhongming Ren Annie Gagnoud Rene Moreau Yudong Zhang Claude Esling | 2009 | Acta Materialia2009，，5： | 1 |
| 6 | Effects of Thermoelectric Magnetic Convection on the Solidification Structure during Directional Solidification under Lower Transverse Magnetic Field显示文摘 | Li X Ren Z M Gagnoud A et at | 2011 | Metallurgical and Materials Transactions A2011，，42： | 1 |
| 7 | Dendrite Fragmentation and Columnar-to-Equiaxed Transition during Directional Solidification at Lower Growth Speed under a Strong Magnetic Field显示文摘 | Li X Gagnoud A Fautrelle Y | 2012 | Acta Materialia2012，60，8： | 1 |
| 8 | Effect of Strong Magnetic Field on Solid Solubility and Microsegregation during Directional Solidification of AI-Cu Alloy显示文摘 | Li X Gagnoud A Ren Z M | 2013 | Journal of Materials Research2013，28，20： | 1 |
| 9 | Effect of an axial high magnetic field on Sn dendrite morphology of Pb-Sn alloys during directional solidification显示文摘 | DU D F HOU L GAGNOUD A REN Z M FAUTRELLE Y CAO G H LI X | 2014 | Journal of Alloys and Compounds2014，588，： | 1 |
| 10 | Degeneration of columnar dendrites during directional solidification under a high magnetic field显示文摘 | Xi Li Zhongming Ren Yves Fautrelle Annie Gagnoud Yudong Zhang Claude Esling | 2008 | Scripta Materialia2008，，6： | 1 |
| 11 | Investigation of Thermoelectric Magnetic Convection and Its Effect on Solidification Structure during Directional Solidification显示文摘 | Li X Gagnoud A Ben Z M | 2009 | Acta Materialia2009，57，： | 1 |
| 12 | Investigation of thermoelectric magnetic convection and its effect on solidification structure during directional solidification under a low axial magnetic field显示文摘 | LI X GAGNOUD A REN Z M FAUTRELLE Y MOREAU R | 2009 | Acta Materialia2009，57，： | 1 |
| 13 | Investigation on the formation mechanism of irregular dendrite during directional solidification of AI-Cu alloys under a high magnetic field 显示文摘 | LI X LI Q Y REN Z M FAUTRELLE Y LU X G GAGNOUD A ZHANG Y D ESLING C WANG H DAI Y M WANG Q L | 2013 | Journal of Alloys and Compounds2013，581，： | 1 |
| 14 | Investigation of thermoelectric magnetic force in solid and its effect on morphological instability in directional solidification 显示文摘 | LI X GAGNOUD A FAUTRELLE Y REN Z M CAO G H MOREAU R ZHANG Y D ESLING C | 2011 | Journal of Crystal Growth2011，324，1： | 1 |
| 15 | 3D finitc element method with impedance boundary condition for the modeling of molten metal shape in electromagnetic casting显示文摘 | DUMONT B GAGNOUD A | 2000 | IEEE Transactions on Magnetics2000，36，： | 1 |
| 16 | Columnar-to-Equiaxed Transition During Directional Solidification Under Strong Magnetic Field显示文摘Effects of strong magnetic fields on the columnar-to-equiaxed transition(CET)have been investigated experimentally.Experimental results show that the application of a strong magnetic field causes a dendrite fragmentation and then the CET.The thermoelectric magnetic force acting on cells/dendrites and equiaxed grains in the mushy zone has been studied numerically.Numerical results reveal that a torque is created on cells/dendrites and equiaxed grains and the value of the thermoelectric magnetic force increases as the magnetic field intensity increase.This torque breaks cells/dendrites and drives the rotation of equiaxed grains.As a consequence,the CET will occur during directional solidification under a strong magnetic field.This may initiate a new method to induce the CET via an applied strong magnetic field during directional solidification. | LI Xi DU Da-fan Annie GAGNOUD Yves FAUTRELLE REN Zhong-ming | 2012 | Journal of Iron and Steel Research(International)2012，19，S2： | 0 |
| 17 | Thermo-Electric Motions and Structures Generated by Static Magnetic Fields During the Solidification of Metallic Alloys显示文摘Thermo-electric currents in the presence of static magnetic fields generate significant electromagnetic forces(TEM forces).The thermo-electric currents are due to the Seebeck effect when temperature gradients exist in the material.Those forces may produce various phenomena like pumping,stirring in liquid metals as well as solid motions,stresses in the solid metal.Those effects may be encountered especially during the solidification of metallic materials because of the existence of significant temperature gradients.In liquid metals the application of a static magnetic field enhances TEM convection at moderate intensity but also damps it when it is strong enough.This means that there exists a maximum of the convection which occurs when the Hartmann layers are comparable to the considered length scale.However,the smaller the length scales are(for example when primary or secondary dendrite arm spacings are considered),the higher the magnetic field strength which is needed to damp the TEM convection.So far,many solidification experiments on various types of alloys(e.g.,Sn-Pb,Al-Cu,Al-Si,Al-Ni etc.)have been carried out.The experiments have shown that TEM convection occurs both in the liquid bulk but also in the deep mushy zone.TEM convection may strongly influence the meso-macrosegregation patterns,the solidification structures and the grain boundaries leading to the striking grain boundary structure of the mushy zone.The flow pattern and accordingly the segregations may be controlled by changing the orientation of the applied magnetic field,i.e.,axial or transverse.We have shown that very high magnetic field strengths,up to 16 T,are needed to damp the TEM convection.Heuristic numerical and analytical investigations show that the TEM force density is very important in the liquid,but can be even more important in the solid.Indeed,for high Hartmann number,the electric currents are confined in a small skin layer near the solid boundaries leading to a decay of the flow.However,the situation is different in the solid,since the force is still important and is not confined.This is confirmed experimentally,since the solidified structures are subject to a much greater rate of dislocations and twinning effects.Furthermore,the TEM forces on the solid promote the appearance of direct Columnar-to-Equiaxed Transitions thanks to the possible enhanced fragmentation of the dendrites.Such mechanisms have been recently partly observed by X-ray in situ observations,where channel formation effects as well as detachment of grains along with horizontal motions were observed. | LI Xi REN Zhong-ming Gagnoud Annie Budenkova Olga Bojarevics Andris Fautrelle Yves | 2012 | Journal of Iron and Steel Research(International)2012，19，S1： | 0 |
| 18 | Numerical Simulation of Fluid Flow Inside a Molten Liquid Metal Droplet Located in an Electromagnetic Induction Generated by Two Different Inducting Currents显示文摘Electromagnetic levitation of electrically conductive droplets by alternating magnetic fields is Sa technique used to measure the physical properties of liquid metallic alloys such as surface tension,viscosity,heat capacity.Experiments can be conducted in microgravity,to reduce electromagnetic stirring and shaping of the droplet.The inductor of the EML is composed of a single inductor which two types of voltage are imposed.This type of electrical installation generates a field to center the metallic droplet and another field to heat and excite it.We use a commercial code join to a homemade code to compute flows generated by inducting voltages recorded in the sounding rocket TEXUS-EML-2(Feb2008).In this flight,two samples(Cu75Co25 at%and A168,5Ni31,5 at%)of 8 mm diameter have been processed. | Alimata DIARRA Annie GAGNOUD Jacqueline ETAY Andreas STEIN Rainer WUNDERLICH | 2012 | Journal of Iron and Steel Research(International)2012，19，S1： | 0 |
| 19 | Innovative Solutions in Induction Heating for Better Energy Efficiency:Presentation of ISIS Project显示文摘The Energy Climate Package is the EU response to the Global Warming Challenge.Induction heating processes can contribute to the energy saving goal:20%saving within 2020.European induction manufacturer already propose many efficient solutions at industrial scale.To improve induction devices for an always better energy efficiency,EDF R&D set up a French cooperative project called ISIS with a financial support of the French National Research Agency.Its objective is to promote induction heating as Best Available Technology(BAT)and to develop innovative solutions to increase its efficiency.The ISIS innovations concern the electroheat conversion of induction devices(auto-adaptive multi-coil power supply,low losses coils)and the recovering of fatally lost energy.This paper shows the mid-term results of this project.Firsts control algorithms were successfully tested on a 100 kW 3-coil power supply.A homogenization technique is proposed to model a multi-strand coil.A heat recovery test bench is build and equipped with a PFC control loop to fit with the production fluctuations. | PAYA Bernard GAGNOUD Annie MAUSSION Pascal ROEHR Philippe BREVILLE Thierry NEMER Maroun GOUPIL Christophe | 2012 | Journal of Iron and Steel Research(International)2012，19，S2： | 0 |
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