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A high-entropy alloy prefabricated body and fusion welding method of titanium and stainless steel

A technology of high-entropy alloys and prefabricated bodies, applied in welding equipment, manufacturing tools, welding media, etc., can solve problems such as difficult to obtain high-performance titanium-steel composite structures, and achieve the effect of high joint performance

Active Publication Date: 2022-04-12
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high-entropy alloy prefabricated body, which solves the problem that the existing welding method is easy to form hard and brittle metal compound, and it is difficult to obtain a high-performance titanium-steel composite structure

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0024] The preparation method of the high-entropy alloy preform is specifically as follows:

[0025] Composition according to atomic percentage, wherein Ti is 5-10%, Ni is 30-35%, Cr is 10-15%, Co is 30-35%, Fe is the balance, and the total atomic percentage is 100%;

[0026] Convert the above atomic percentages into mass percentages, weigh the high-purity metals of each component according to the mass percentages, mix the components evenly in an ultra-high vacuum electric arc furnace for melting, and mix them according to the melting point of various elements from low to high Put them into the crucible in order to ensure that the element with the lowest melting point is placed in the bottom layer of the sample tank, and the element material with the highest melting point is placed in the top layer to ensure that the element material with high melting point is completely penetrated to obtain a high-entropy alloy. It is processed and prepared into a preform with a width of 4mm....

Embodiment 1

[0033] A high-entropy alloy prefabricated body is composed of the following components by atomic percentage: Ti is 5%, Ni is 33%, Co is 34%, Cr is 10%, Fe is the balance, and the total percentage is 100%;

[0034] Convert the above atomic percentages into mass percentages, weigh the high-purity metals of each component according to the mass percentages, mix the components evenly in an ultra-high vacuum electric arc furnace for melting, and mix them according to the melting point of various elements from low to high Put them into the crucible in order to ensure that the element with the lowest melting point is placed in the bottom layer of the sample tank, and the element material with the highest melting point is placed in the top layer to ensure that the element material with high melting point is completely penetrated to obtain a high-entropy alloy. It is processed and prepared into a preform with a width of 4mm.

[0035] A high-entropy alloy prefabricated body is placed bet...

Embodiment 2

[0040] A high-entropy alloy prefabricated body is composed of the following components by atomic percentage: Ti is 8%, Ni is 32%, Cr is 14%, Co is 32%, Fe is the balance, and the total percentage is 100%;

[0041] Convert the above atomic percentages into mass percentages, weigh the high-purity metals of each component according to the mass percentages, mix the components evenly in an ultra-high vacuum electric arc furnace for melting, and mix them according to the melting point of various elements from low to high Put them into the crucible in order to ensure that the element with the lowest melting point is placed in the bottom layer of the sample tank, and the element material with the highest melting point is placed in the top layer to ensure that the element material with high melting point is completely penetrated to obtain a high-entropy alloy. It is processed and prepared into a preform with a width of 4mm.

[0042] A high-entropy alloy prefabricated body is placed bet...

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Abstract

The invention discloses a high-entropy alloy prefabricated body, which is composed of the following components according to atomic percentage: 5-10% of Ti, 30-35% of Ni, 10-15% of Cr, 30-35% of Co, Fe Taking the balance, the sum of the atomic percentages of each component is 100%. The invention also discloses a fusion welding method for the titanium plate and the stainless steel plate. The high-entropy alloy prefabricated body is placed between the titanium plate and the stainless steel plate to be welded, and then the pulse argon arc welding machine is used for fusion welding respectively. Using the high-entropy alloy prefabricated body fusion welding of the present invention to weld titanium plates and stainless steel plates, the formed weld basically eliminates brittle intermetallic compounds, and the center of the weld is composed of (Ti, Fe, Ni, Cr, Co) solid solution, which is a single Solid solution structure, high joint performance.

Description

technical field [0001] The invention belongs to the field of welding technology, and in particular relates to a high-entropy alloy prefabricated body and its welding method for titanium and stainless steel. Background technique [0002] Titanium and titanium alloys have the advantages of high specific strength, low density, high temperature resistance, and corrosion resistance, and are widely used in aerospace, petrochemical, medical and other fields. However, due to the complexity and high price of titanium metallurgy, its large-scale promotion is limited. application. Steel has many excellent properties and low price, but its corrosion resistance is poor and its specific weight is large, so it is difficult to apply in some special fields. The composite structure of titanium and steel can have the advantages of titanium and steel at the same time, maximize the complementary advantages of both in performance and economy, and have broad application prospects in many fields. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/30B23K9/09B23K9/16
CPCB23K35/30B23K9/09B23K9/16
Inventor 翟秋亚刘帅宾徐锦锋王谦歌李晓飞
Owner XIAN UNIV OF TECH
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