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A preparation method of high-entropy alloy welding wire for titanium and steel tig welding

A high-entropy alloy and welding wire technology, applied in welding equipment, welding/welding/cutting items, welding media, etc., can solve the problems of cracking of welds, difficulty in obtaining high-performance parts, etc., and achieve excellent strength and welding process adaptability. Good, simple effect of welding operation process

Inactive Publication Date: 2016-04-20
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of preparation method of the high-entropy alloy welding wire that is used for titanium and steel TIG welding, has solved in the prior art, when TIG welding method realizes titanium / steel welding, easily forms hard and brittle intermetallic compound Problems that lead to cracking of weld seams, making it difficult to obtain high-performance parts

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] According to the total percentage of 100%, Zr31%, Cu8%, Fe18%, Ni21%, Be22%, select the element content of each component, control the spinning wheel line speed at 5-8m / s, and according to the above-mentioned embodiment An amorphous Zr31Cu8Fe18Ni21Be22 high-entropy welding wire with a diameter of Ф1.1mm 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 410MPa.

Embodiment 2

[0022] According to the total percentage of 100%, Zr33%, Cu11%, 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 Zr33Cu11Fe15Ni21Be20 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.

Embodiment 3

[0024] According to the total percentage of 100%, Zr32%, Cu10%, Fe16%, Ni20%, Be22%, select the element content of each component, control the spinning wheel line speed at 5-8m / s, and according to the above-mentioned embodiment A Zr32Cu10Fe16Ni20Be20 high-entropy welding wire with a diameter of Ф1.2mm was prepared. TIG welding is used to weld TA2 titanium and Q235 steel plate. The welding process parameters are: Ar gas flow rate 8-10L / min, arc voltage 10-12V, welding current 90A, 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 403MPa.

[0025] In summary, the high-entropy alloy welding wire of the present invention is an amorphous high-entropy alloy itself, and the weld metal formed after welding is also a high-entropy alloy, but the content of Ti and Fe in the weld is significantly higher than that of the high-entropy alloy. The initial value of the intermediate layer...

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Abstract

The invention discloses a high-entropy alloy welding wire for TIG welding of titanium and steel, which is composed of the following components according to atomic percentage: the total percentage is 100%, Zr is 30-33%, Cu is 8-12%, Fe 15-18% for Ni, 20-24% for Ni, and 20-24% for Be. The invention also discloses a preparation method of the high-entropy alloy welding wire used for TIG welding of titanium and steel. The amorphous high-entropy alloy welding wire of the invention has good melting and processing performance, simple preparation method and process of the welding wire, and low production cost. The process of TIG welding titanium / steel with amorphous high-entropy alloy welding wire is simple, the matching between welding wire and titanium and steel is good, there is no crack in the welding zone, the weld seam is basically a single-phase solid solution structure, and the comprehensive mechanical properties of the joint are high.

Description

technical field [0001] The invention belongs to the technical field of welding, and relates to a preparation method of a high-entropy alloy welding wire used for TIG welding of titanium and steel. Background technique [0002] Titanium and its alloys have high specific strength and good corrosion resistance, but due to the high price of titanium metal, its further development and application are limited; the price of titanium-steel composite plate is equivalent to 25-35% of that of titanium, and it also has titanium With the excellent properties of steel, it is a good way to save titanium metal. It has obvious social and economic effects in improving material utilization, reducing structural weight, improving corrosion resistance of parts, and reducing costs. It has broad application prospects. . The equipment produced by titanium-steel composite plate is cost-effective, but its own structure is complex, and its welding construction is much more difficult than titanium / tita...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/40B23K35/24
CPCB23K35/32B23K35/40B23K2103/18
Inventor 翟秋亚刘正徐锦锋
Owner XIAN UNIV OF TECH
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