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High-entropy alloy welding wire for welding titanium-steel and preparation method thereof

A high-entropy alloy and welding wire technology, used in welding equipment, welding/welding/cutting items, welding media, etc., can solve the problems of cracking of intermetallic compounds, difficult to obtain high-performance parts, etc., achieve excellent strength, easy to promote, The effect of simple welding operation process

Inactive Publication Date: 2014-02-12
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 welding wire for welding titanium-steel, which solves the problem that when the welding wire in the prior art is used for welding titanium-steel, it is easy to form hard and brittle intermetallic compounds and cause cracking, which is not easy to obtain Problems with High Performance Artifacts

Method used

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preparation example Construction

[0017] The preparation method of high-entropy alloy welding wire of the present invention is implemented according to the following steps:

[0018] Step 1, fusion master alloy:

[0019] According to atomic percentage, Zr is 30%~33%, Ti is 8%~12%, Fe is 15%~18%, Ni is 20%~24%, Be is 20%~24%, the total percentage is 100%. Convert the above atomic percentages into mass percentages, weigh various high-purity metals according to the mass percentages, mix the above components, and compact them into blanks for use; melt the blanks in an ultra-high vacuum electric arc furnace Matching to obtain a master alloy;

[0020] Step 2, using metal spinning technology, remelting the master alloy obtained in step 1, and preparing amorphous high-entropy alloy welding wire through rapid cooling and rapid solidification by spinning wheels. The linear speed of the spinning wheel is adjusted by changing the rotational speed of the motor, and the linear speed of the spinning wheel is controlled at ...

Embodiment 1

[0022] According to the total atomic percentage of 100%, Zr31%, Ti8%, Fe18%, Ni21%, Be22%, select the element content of each component, control the spinning wheel line speed at 5-8m / s, and implement according to the above Amorphous Zr31Ti8Fe18Ni21Be22 high-entropy welding wire with a diameter of Ф1.1mm was prepared by this method. TIG welding is used to weld TA2 titanium and Q235 steel plates. The welding process parameters are: Ar gas flow rate 8-10L / min, arc voltage 10-12V, welding current 100A, welding speed 50-60mm / min. The fusion of the weld metal is good, there is no crack in the fusion zone, and the tensile strength of the welded joint is about 410MPa.

Embodiment 2

[0024] According to the total percentage of 100%, Zr33%, Ti11%, Fe15%, Ni21%, Be20%, select the element content of each component, control the spinning wheel line speed at 5-8m / s, and follow the above-mentioned embodiment An amorphous Zr33Ti11Fe15Ni21Be20 high-entropy welding wire with a diameter of Ф1.2mm was prepared. TIG welding is used to weld TA2 titanium and Q235 steel plates. The welding process parameters are: Ar gas flow rate 8-10L / min, arc voltage 10-12V, welding current 100A, welding speed 50-60mm / min. The fusion of the weld metal is good, there is no crack in the fusion zone, and the tensile strength of the welded joint is about 392MPa.

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Abstract

The invention discloses a high-entropy alloy welding wire for welding titanium-steel. The high-entropy alloy welding wire consists of the following components by atomic percent: 30 to 33 percent of Zr, 8 to 12 percent of Ti, 15 to 18 percent of Fe, 20 to 24 percent of Ni, 20 to 24 percent of Be, and the total percentage is 100 percent. The invention also discloses a preparation method of the high-entropy alloy welding wire for welding the titanium-steel. The preparation method comprises the following steps of step 1, melting master alloy; and step 2, preparing the amorphous high-entropy alloy welding wire by utilizing a metal spinning technology. By adopting the high-entropy alloy welding wire, the process for TIG welding titanium-steel is simiple, the welding wire is well matched with the titanium and steel, no crack exists in the welding area, the weld seam is basically single-phase solid-solution organization, and the comprehensive mechanical performance of a connector is high.

Description

technical field [0001] The invention belongs to the field of welding technology, and relates to a high-entropy alloy welding wire used for welding titanium-steel, and also relates to a preparation method of the high-entropy alloy welding wire used for welding titanium-steel. Background technique [0002] Titanium and its alloys have high specific strength and good corrosion resistance. Almost all important chemical containers, bridge columns of cross-sea bridges and anti-corrosion lining plates of super large floating marine structures are welded structures of titanium and steel. The price of titanium-steel composite parts is equivalent to 25-35% of that of titanium, and at the same time, it has the excellent characteristics of both titanium and steel, which is a good way to save precious metals. It has obvious social and economic effects in terms of improving material utilization, reducing structural weight, improving corrosion resistance of parts, and reducing costs, and h...

Claims

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Application Information

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IPC IPC(8): B23K35/32B23K35/40
CPCB23K35/32B23K35/40B23K2103/18
Inventor 翟秋亚侯光远徐锦锋
Owner XIAN UNIV OF TECH
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