Method for preparing non-liquating monotectic alloy material and device thereof

A technology of monotectic alloy and segregation, which is applied in the field of preparation technology of homogeneous monotectic alloy material, can solve the problems of long research period, limitation of sample size and equipment, and degradation of bearing material performance.

CN101148746BActive Publication Date: 2010-11-24新兴发展集团有限公司
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Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2010-11-24

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Abstract

The present invention relates to process and apparatus for preparing monotectic crystal alloy without segregation, and belongs to the field of homogeneous monotectic crystal alloy preparing technology. The present invention features that the segregation of the second phase in alloy is inhibited by means of the cooperation of steady strong magnetic field and alternate current so as to obtain monotectic crystal alloy with homogeneously distributed second phase. The process of the present invention includes the following steps: heating binary alloy with monotectic crystal component inside a crucible by means of alternate current inside a strong magnetic field a superconductive magnet generates under the protection of inert gas at temperature over the liquid temperature for several hours, andlowering the temperature in controlled speed while applying AC in proper intensity and frequency to below the solid temperature, and further cooling to room temperature to obtain the monotectic crystal alloy.
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Description

A method and device for preparing a monotectic alloy material without segregation technical field The invention relates to a method and a device for preparing a monotectic alloy material without segregation, and belongs to the technical field of homogeneous monotectic alloy material preparation technology. Background technique The monotectic alloy with the second phase evenly distributed in the matrix is ​​an important functional material, and it exhibits excellent performance in the fields of high-performance bearing materials, electrical contact materials, electrochemical materials, and superconducting materials. However, this alloy has special metallurgical characteristics: during the solidification process of the alloy, there is a liquid-liquid immiscible zone. Due to the difference in density between the liquid phase that precipitates first and the original melt, the liquid phase stratifies, and finally forms a mutual phase. Immiscible two phases, so that the uniform ...

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