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High-entropy alloy welding wire for TIG (tungsten inert gas) welding of titanium and steel and preparation method

A high-entropy alloy and welding wire technology, which is applied in welding equipment, welding/welding/cutting items, welding media, etc., can solve problems such as weld cracking and difficulty in obtaining high-performance parts, and achieve excellent strength and welding process adaptability Good, simple welding operation process

Inactive Publication Date: 2014-03-19
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 titanium and steel TIG welding, which solves the problem that in the prior art, when the TIG welding method realizes titanium / steel welding, it is easy to form hard and brittle intermetallic compounds and cause weld seam Cracking, not easy to obtain high-performance parts

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 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 follow the above-mentioned implementation method 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

[0023] 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 implementation method 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

[0025] 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 implement according to the above Zr32Cu10Fe16Ni20Be20 high-entropy welding wire with a diameter of Ф1.2mm was prepared by this method. 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.

[0026] 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 lay...

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Abstract

The invention discloses a high-entropy alloy welding wire for TIG (tungsten inert gas) welding of titanium and steel. The high-entropy alloy welding wire comprises, in total atomic percent of 100%, 30-33% of Zr, 8-12% of Cu, 15-18% of Fe, 20-24% of Ni and 20-24% of Be. The invention further discloses a preparation method of the high-entropy alloy welding wire for TIG welding of the titanium and the steel. The amorphous high-entropy alloy welding wire is fine in smelting and machining property and low in manufacturing cost, and the preparation method and the process of the welding wire are simple. The titanium / steel TIG welding process by the amorphous high-entropy alloy welding wire is simple, the welding wire is effectively matched with the titanium and the steel, a welding zone is crack-free, a welding line is basically a single-phase solid solution texture, and the general mechanical performance of a joint 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 TIG welding of titanium and steel, and also relates to a preparation method of the high-entropy alloy welding wire. 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 weld...

Claims

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Application Information

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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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