A highly plastic alcocufeni 1.5 High entropy alloy and its preparation method
A high-entropy alloy and high-plasticity technology, which is applied in the field of high-plasticity AlCoCuFeNi1.5 high-entropy alloy and its preparation, can solve the problem of low plasticity of high-entropy alloys, and achieve high saturation magnetization, low energy consumption, and excellent soft magnetic properties Effect
Active Publication Date: 2020-07-14
NANCHANG UNIV
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Problems solved by technology
[0003] The technical problem to be solved in the present invention is to prepare AlCoCuFeNi with high plasticity by using arc melting technology in view of the low plasticity of high-entropy alloys. 1.5 High-entropy alloys that provide a highly plastic AlCoCuFeNi 1.5 High-entropy alloys and their preparation methods also provide new ideas for improving the mechanical properties of high-entropy alloys
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[0022] Below in conjunction with accompanying drawing, the present invention will be further described.
[0023] A kind of high plasticity AlCoCuFeNi 1.5 High entropy alloy, composition AlCoCuFeNi 1.5 , the specific steps of the method are as follows:
[0024] 1. Raw material treatment: Use sandpaper to remove the oxide skin on the surface of the raw material, then put the raw material in a container, then add absolute ethanol solution, and ultrasonically clean for 10 minutes to remove dust and oil on the surface of the raw material. Then replace with absolute ethanol, ultrasonic cleaning for 5min. Finally, dry the raw materials with a blower to obtain clean Al raw materials, Co raw materials, Cu raw materials, Fe raw materials, and Ni raw materials, and the purity of each raw material is greater than 99.9%.
[0025] 2. Weighing ratio: according to AlCoCuFeNi 1.5 For the molar ratio of high-entropy alloys, use an electronic balance to accurately weigh Al raw materials, Co ...
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Abstract
The invention provides a high-plasticity AlCoCuFeNi1.5 high-entropy alloy and a preparation method thereof. The preparation method comprises the steps that firstly, raw materials are treated, specifically, oxide skins on the surfaces of raw materials are removed, and the raw materials are subjected to ultrasonic cleaning by an anhydrous ethanol solution; secondly, materials are weighted accordingto ratio, specifically, an Al raw material, a Co raw material, a Cu raw material, a Fe raw material and a Ni raw material are weighted accurately, and the molar ratios of the Al raw material, the Co raw material, the Cu raw material, the Fe raw material and the Ni raw material are 1:1:1:1:1.5; and a high-entropy alloy is subjected to electric arc melting, specifically, the AlCoCuFeNi1.5 high-entropy alloy is obtained by the electric arc melting. The AlCoCuFeNi1.5 high-entropy alloy has a simple organization structure and uniform organization and element distribution, is of a BCC+FCC dual-phasestructure, and has the advantages of high strength, high hardness and high plasticity, and the fracture strain is up to 36%, and good plasticity is achieved. The high-plasticity AlCoCuFeNi1.5 high-entropy alloy has high saturation magnetization intensity, low coercivity and remanence ratio, and has good soft magnetic properties, and can be used as soft magnetic materials in electromagnetic fields, such as a transformer and generator.
Description
technical field [0001] The invention belongs to the technical field of alloy materials and their preparation, in particular to a high plasticity AlCoCuFeNi 1.5 High-entropy alloys and methods for their preparation. Background technique [0002] High-entropy alloys are composed of five or more elements, and the atomic percentage of each element is between 5% and 35%. The structure is simple, and most of them are BCC phase, FCC phase or BCC+FCC dual-phase structure. The alloy components are highly disordered, simple in structure, mostly BCC, FCC or BCC+FCC dual-phase structure, and the high entropy effect effectively inhibits the generation of intermetallic compounds. Due to the large number of constituent elements, the atomic radii of each element vary. Therefore, there is a large lattice distortion inside the high-entropy alloy, which hinders the diffusion of atoms in the alloy, which also makes the high-entropy alloy have high strength and hardness, but its plasticity is ...
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IPC IPC(8): C22C30/02C22C1/02
CPCC22C1/02C22C30/02
Inventor 彭文屹刘聪江长双刘炅昊周师晨邓晓华
Owner NANCHANG UNIV