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Preparation process for improving forming ability of Fe-base amorphous alloys

An iron-based amorphous alloy and preparation process technology, which can be used in manufacturing tools, casting and molding equipment, metal processing equipment, etc. The effect of weak forming ability of iron-based amorphous alloys

Active Publication Date: 2015-01-07
CHINA UNIV OF MINING & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a preparation process for improving the formation ability of iron-based amorphous alloys, to solve the problem that the amorphous formation ability of iron-based amorphous alloys with high saturation magnetic induction is generally low at present, and to have high saturation magnetization , large amorphous formation ability, and low cost are conducive to promoting large-scale application

Method used

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  • Preparation process for improving forming ability of Fe-base amorphous alloys
  • Preparation process for improving forming ability of Fe-base amorphous alloys
  • Preparation process for improving forming ability of Fe-base amorphous alloys

Examples

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Embodiment 1

[0032] Example 1: According to Fe 72-x B 19.2 Si 4.8 Nb 4 Cu x (x=0, 0.1, 0.2, 0.3, 0.4, 0.6, 0.8, 1.0) The nominal composition of the alloy converts the atomic percentages of different types of elements in the alloy into mass percentages, and weighs high-purity raw materials in proportion: Fe (99.99%), Cu (99.99%), B (99.7%), Si (99.99%) and Nb (99.99%) are available for use.

[0033] Mix the raw materials according to the above composition ratio and place them in the water-cooled copper crucible of the electric arc melting furnace, and evacuate to less than 5×10 -5 After Pa is filled with argon gas to a pressure of 600mbar, the melting is continued for 5 minutes after melting. After the molten alloy is cooled to solidification, it is turned over and smelted again, and the smelting is repeated 4 times to obtain a master alloy ingot with uniform composition.

[0034] The ingot cooled to room temperature is taken out from the electric arc melting furnace, the surface impurit...

Embodiment 2

[0040] Embodiment 2: alloy composition is Fe 84-x Nb 2 B 14 Cu x (x=0, 0.5, 1.0, 1.5). Iron-based amorphous alloy strips were prepared only by single-roll rapid quenching. From Figure 4 It can be seen that when the copper content is 0.5 atomic percent, the amorphous-forming ability of the alloy is effectively improved. Others are the same as in Example 1.

Embodiment 3

[0041] Embodiment 3: The technological process of the following various iron-based amorphous alloy systems is the same as that of the embodiment.

[0042] Table 1 lists seven iron-based amorphous alloy systems and their example alloy compositions. As can be seen from Table 1, the formation ability of the amorphous alloy of the example alloy composition in these seven kinds of iron-based amorphous alloy systems after adding trace copper elements has all been improved, showing that the method of the present invention is adopted in the following seven kinds of alloy systems It is feasible to improve the forming ability of amorphous alloy. Especially for increasing high iron content such as Fe 84 Nb 2 B 14 , Fe 86 B 7 C 7 , Fe 84 P 10 C 6 The ability of amorphous alloys such as alloys to form amorphous has the advantages that other amorphous alloys are difficult to replace.

[0043] Table 1 Effect of copper addition on the forming ability of several typical iron-based am...

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Abstract

The invention discloses a preparation process for improving the forming ability of Fe-base amorphous alloys, which belongs to the preparation method of Fe-based amorphous alloys. The process is low in cost, and simple and practicable, and can obviously increase the amorphous forming ability under the condition that the saturation magnetization is not reduced. According to the invention, stripped and blocky Fe-base amorphous alloy samples are respectively prepared by using a single-roll rapid quenching or copper mold casting method. The process specially comprises the following steps: under the protection of argon, adding a microelement into a Fe-base amorphous alloy, melting the obtained object in a reacting furnace in stoichiometric ratio, and rapidly cooling and solidifying the obtained product, so that a Fe-base amorphous alloy with high saturation magnetization and large amorphous forming ability is obtained, wherein the added microelement is a copper element, and the microelement accounts for 0.1-1.0% of the Fe-base amorphous alloy by total atomic percent. The process has the advantages that 1, an adopted Fe-base amorphous alloy preparation technology is simple and practicable, and low in cost; 2, the saturation magnetization is reduced while the amorphous forming ability is increased; and 3, the process is applicable to most of primary-phase non-alpha-Fe Fe-base amorphous alloy systems, thereby promoting the popularization and application of the Fe-base amorphous alloys.

Description

technical field [0001] The invention relates to a preparation process of an iron-based amorphous alloy, in particular to a preparation process for improving the forming ability of the iron-based amorphous alloy. technical background [0002] Iron-based amorphous alloys have excellent soft magnetic properties such as high magnetic permeability, low coercive force, and low loss. It is called "the green electronic material of the 21st century". The economic effect of an amorphous transformer compared with a conventional transformer of the same capacity for 30 years: it can save 492,075KWh of electricity; save 393,660 yuan in electricity bills; save 278.4 tons of natural coal; and reduce 3.06 tons of carbon dioxide emissions. Iron-based amorphous alloys can also replace ultra-thin silicon steel in harsh environments, and can greatly promote the development of transformers in the direction of high frequency and chip type. With the development of science and technology, the elec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C45/02C22C1/02B22C9/06B22D11/06
Inventor 杨卫明刘海顺薛琳侯龙赵玉成窦林名
Owner CHINA UNIV OF MINING & TECH
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