Preparation method of copper and iron immiscible alloy

Abstract

The invention provides a preparation method of a copper and iron immiscible alloy, and belongs to the technical field of immiscible alloys. The preparation method is characterized by including the following implementation steps that 1, a boron nitride crucible is put in a vacuum box body of a high-frequency induction furnace, a copper and iron sample with the mass ratio of 85:15 is put in the boron nitride crucible, and the boron nitride crucible is connected with molybdenum electrodes; and the vacuum box body is vacuumized to 2*10<-4> Pa. The preparation method includes the steps that 1, a high-frequency induction heating power source is switched on, heating is carried out until the temperature reaches 1,400 DEG C, the copper and iron sample is completely melted, and heat preservation iscarried out for 10 min; 2, electric pulses are applied to the copper and iron sample obtained after heat preservation, and the acting time is 10 min; and 3, the high-frequency induction heating powersource is switched off, a furnace cooling process is executed, and a pulse power source is switched off after melt of the copper and iron sample is completely solidified. The preparation method has the beneficial effect that the copper and iron immiscible alloy prepared with the method can have a uniform structure and refined grains.

Description

technical field [0001] The invention belongs to the technical field of immiscible alloys, and in particular relates to a preparation method of copper-iron immiscible alloys. Background technique [0002] Immiscible alloys are prone to serious segregation and even delamination under conventional casting conditions, which makes them lose their application value. Therefore, the excellent properties of immiscible alloys can only be reflected if the second phase is uniformly and dispersedly distributed in the matrix, or the two phases in the symbiotic organization are arranged in a fibrous order. Therefore, the preparation of immiscible alloys has attracted people's attention. [0003] Many scholars have done research on directional solidification of immiscible alloys under space microgravity conditions. Although the space microgravity method is an ideal method to study the liquid phase separation mechanism of immiscible alloys, its high cost prevents it from being widely used....

AI Technical Summary

Problems solved by technology

Its main advantages are high volume fraction of the second phase, small macro-segregation, and the possibility of adding other alloying elements; however, its disadvantages are also prominent, such as high production cost and complicated process

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