Screening method for cooling rate of amorphous alloy strip

CN114433803BActive Publication Date: 2024-12-10ZHENGZHOU RES INST OF MECHANICAL ENG CO LTD
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Patent Information

Application Number
CN202210125672.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-02-10
Publication Date
2024-12-10
Estimated Expiration
2042-02-10

AI Technical Summary

Technical Problem

The cooling speed screening of amorphous alloy strips in single-roll melt fast quenching method is mainly trial and error methods, which is time-consuming and labor-intensive and lacks accuracy, which affects the preparation quality and cost.

Method used

By adjusting the surface linear velocity of the rotating cooling roller, an alloy strip with a completely amorphous and crystalline structure is formed. The cooling speed is calculated using the thickness values ​​of the amorphous and crystalline regions, combining the nozzle slit shape and argon pressure. Establish a relationship between the thickness of the amorphous alloy strip and the linear velocity of the surface of the cooling roller to achieve high-throughput screening.

Benefits of technology

It greatly shortens the test cycle of amorphous alloys, reduces development costs, accurately controls preparation parameters, quickly determines the critical cooling speed, and promotes engineering applications.

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Abstract

The present invention relates to a method for screening the cooling speed of an amorphous alloy strip, and belongs to the technical field of amorphous alloy preparation. The screening method of the present invention comprises the following steps: 1) using a single-roll melt rapid quenching method to spray a molten master alloy through a nozzle onto a rotating cooling roller to cool and solidify to form an alloy strip; during the spraying of the molten master alloy, the surface linear speed of the rotating cooling roller is adjusted from v 1 Decelerate to v 2 Or by v 2 Speed ​​up to v 1 Continuously change the thickness of the alloy strip, the line speed v 1 The alloy formed by cooling and solidification is a completely amorphous structure, and the linear speed v 2 The alloy formed by cooling and solidification is a crystalline structure; 2) the thickness value of the position point in the amorphous region of the alloy strip formed during the speed change or the position point on the boundary between the crystallized region and the amorphous region is substituted into the relationship between the thickness of the amorphous alloy strip and the surface linear speed of the cooling roller to obtain the cooling speed. This screening method can complete the high-throughput screening of cooling speed through the one-time preparation of the alloy strip.
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Citation Information

Patent Citations

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    CA2130597A1

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    CN102990023A

  • Rare-earth-doped iron-based amorphous thick strip and preparing method thereof

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  • Method for regulating and controlling thickness of iron-based amorphous alloy strip

    CN110181007A

  • Process method for increasing thickness of amorphous alloy strip

    CN110976794A