A kind of high-strength high-plasticity high-entropy alloy and preparation method thereof

A technology of high-entropy alloy and high plasticity, which is applied in the field of high-entropy alloy and its preparation, can solve the problem of low strength, achieve the effect of improving strength and plasticity, promoting fine-grain strengthening, and simple method
CN111961893BActive Publication Date: 2022-02-11SOUTHEAST UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SOUTHEAST UNIV
Publication Date
2022-02-11

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Abstract

The invention discloses a high-strength and high-plastic high-entropy alloy and a preparation method thereof, belonging to the technical field of metal materials and manufacture. The raw materials for the preparation of the high-entropy alloy of the present invention are Co, Cr, Fe, Ni metal particles and Al-10Er (Er mass fraction is 10%) intermediate alloy particles, and the preparation method is as follows: the above-mentioned metal particles are weighed according to the set ratio , melted in a high-vacuum arc melting furnace and then solidified in a copper mold to prepare a high-entropy alloy. In the melting process, in order to ensure the uniformity of the alloy composition, the alloy block needs to be smelted repeatedly. Homogenize the as-cast high-entropy alloy prepared initially in a high-temperature heat treatment furnace, then water quench, and roll the high-entropy alloy ingot at a temperature of 500-800°C, and cool the rolled sample with air , a high-entropy alloy with high strength and high plasticity can be obtained. The high-entropy alloy prepared by the invention has excellent mechanical properties and simple preparation process.
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Description

technical field

[0001] The invention relates to a high-strength and high-plastic high-entropy alloy and a preparation method thereof, belonging to the technical field of metal materials and their preparation. Background technique

[0002] Traditional alloys are generally based on one or two elements, and some specific performance requirements can be achieved by adding a small amount of other elements. With the further development of the alloy design concept, at the beginning of the 21st century, Taiwan scholar Ye Junwei broke through the traditional alloy design concept and took the lead in proposing the design idea of ​​"high-entropy alloy", that is, the number of principal elements in the alloy is not less than 5, and each principal element The molar ratio of yuan is between 5% and 35%. High-entropy alloys have high-entropy effects, can form simple solid solution structures, and do not appear complex intermetallic compounds. The number of phases obtained is far lower than...

Claims

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