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A kind of preparation method of copper-iron immiscible alloy

An immiscible alloy, copper-iron technology, applied in the field of preparation of copper-iron immiscible alloy, can solve the problems of high second phase volume fraction, high production cost, small macro segregation, etc. Increased nucleation rate and microstructure effect

Inactive Publication Date: 2021-01-19
TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY +1
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  • Application Information

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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

Method used

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  • A kind of preparation method of copper-iron immiscible alloy
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Embodiment Construction

[0018] like figure 1 Shown, the preparation method that the present invention prepares copper-iron refractory alloy is:

[0019] The first step: place the boron nitride crucible 6 in the vacuum box 7 of the CW-30P high-frequency induction heating furnace, and then put the copper-iron sample 5 with a mass ratio of 85:15 into the boron nitride crucible 6, The boron nitride crucible 6 is connected to the molybdenum electrode 4, and the vacuum box 7 of the GW-30P high-frequency induction heating furnace is evacuated to 2×10 -4 Pa, turn on the high-frequency induction heating power supply 10, heat the copper-iron sample to 1400°C, melt all the copper-iron sample pieces 5, and keep the temperature for 10 minutes;

[0020] In the second step, an electric pulse is applied to the copper-iron sample 5 after heat preservation, and the action time is 10 minutes. First, the pulse power supply 2 is started, and then the output voltage of the pulse power supply 2 is adjusted to 60V, the pul...

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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....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D27/02C22C9/00
CPCB22D27/02C22C9/00
Inventor 郝维新孙晓思李玉贵耿桂宏郝玺
Owner TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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