Method and device for controlling crystal orientation in steady-state magnetic field through directional solidification

A technology of directional solidification and crystal orientation, applied in crystal growth, chemical instruments and methods, single crystal growth, etc., can solve problems such as easy growth, and achieve the effect of simple method, convenience and operation
CN104862777AInactive Publication Date: 2015-08-26SHANGHAI UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI UNIV
Publication Date
2015-08-26
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses a method and a device for controlling crystal orientation in a steady-state magnetic field through directional solidification. Metal containing anisotropic crystals and alloys are put in a directional solidification device in the steady-state magnetic field; for a certain crystal with a difference in easy growth direction and easy magnetization direction, the steady-state magnetic field and direction solidification are adopted, so that textures can be formed in the easy growth direction and easy magnetization direction respectively, that is, when the easy growth direction of the crystal is orientated in the direction opposite to heat flux in the directional solidification process, the steady-state magnetic field is applied at a certain angle in the directional solidification process according to characteristics of crystallography, accordingly, the easy magnetization direction can turn to a magnetic field direction, and the purpose that multiple crystals form multi-crystal-orientation textures is achieved. The method is simple and convenient to operate.
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Description

technical field

[0001] The invention relates to a metal material solidification process and device, in particular to a metal directional solidification method and device, which are applied in the technical field of metal material solidification structure control. Background technique

[0002] Crystals are often anisotropic, and their mechanical, electromagnetic, optical, corrosion resistance, magnetism and even nuclear physics properties will show significant differences in different crystallographic directions, so the most excellent performance. Many metal materials are polycrystalline. If the crystal orientation with the best performance forms a texture, the performance of the material will be greatly improved. Directional solidification is a good means of controlling crystal orientation. Its characteristic is that a temperature gradient in a specific direction is established in the metal solid phase and liquid phase, so that the melt solidifies along the direction oppos...

Claims

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