Modeling of orientation and alignment of primary Al3Ni crystal in Al-Ni alloy by imposing a high magnetic field

摘要：

　　Regarding Al3Ni crystal as a rigid ellipsoid,a model describing the orientation and alignment of a primary paramagnetic Al3Ni crystal in Al–Ni alloy solidification under a high magnetic field is developed.The model is based on rigid body rotation dynamics model as well as the magnetic dipole model,respectively.It describes the rotational motion of a magnetic anisotropic crystal around its centroid and around one endpoint of its crystal axis.The orientation time and the orientation characteristics with the intensity of magnetic field,the aspect ratio of the crystal and the effective viscosity of the melt,as well as the crystal growth,are deeply discussed for single grain.Furthermore,the interaction between two crystals during the alignment in high magnetic field are analyzed based on the magnetic dipole model,in which the final state of the grain is dependent on the attractive interaction force between two neighboring grains and the magnetization force acting on each grain.The prediction shows fitness with the experimental and theoretical results in literature.

关键词： high magnetic field magnetocrystalline anisotropy rotation magnetic interaction

作者: ZHANG Hong-wei JIANG Xing HE Ji-cheng

作者单位: Key Laboratory of Electromagnetic Processing of Materials,Ministry of Education,Northeastern University,Shenyang,110819,Liaoning,China

会议类型: 国际会议

会议名称: The 7th International Conference on Electromagnetic Processing of Materials(第七届冶金与材料电磁过程国际大会)

会议地点: 北京

会议语种:英文

页码: 1-5

在线出版日期: 2012-10-22（万方平台首次上网日期，不代表论文的发表时间）