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Material and method used for TA2/0Cr18Ni9Ti welded by high-entropy effect

A high-entropy, high-effect technology, applied in the direction of welding/cutting media/materials, welding media, welding equipment, etc., can solve the problems of difficult to obtain high-performance titanium-steel composite structures, and achieve convenient and easy welding process. The effect of simplicity and wide adaptability of welding objects

Inactive Publication Date: 2012-09-19
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a high-entropy interlayer alloy applied to high-entropy effect welding TA2 / 0Cr18Ni9Ti, which solves the problem that the existing welding method is easy to form hard and brittle intermetallic compounds, and it is not easy to obtain a high-performance titanium-steel composite structure The problem

Method used

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  • Material and method used for TA2/0Cr18Ni9Ti welded by high-entropy effect

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preparation example Construction

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

[0018] Step 1. Use a vacuum electric arc furnace to melt the master alloy:

[0019] 1.1) Convert the atomic percentage of the high-entropy interlayer alloy components into mass percentage, weigh the following high-purity metals according to the mass percentage, and the purity of all high-purity metals is higher than 99.99%, mix each component Evenly, compacted into billets for use.

[0020] 1.2 Melting the billet prepared in step 1.1 in a vacuum electric arc furnace to obtain a master alloy. Step 2. Using a single-roller rapid solidification device, the linear speed of the roller is controlled at 5-7m / s, and the master alloy obtained in step 1.2 is prepared into a high-entropy intermediate layer alloy foil. The prepared high-entropy intermediate layer alloy foil is The thickness of the material is 100~200μm, the width is 3~7mm, and t...

Embodiment 1

[0030] According to the preparation method of the above-mentioned high-entropy interlayer alloy, select the elements and contents of each component according to the data of the high-entropy interlayer alloy Example 1 listed in Table 1, and control the roll surface line speed at 5m / s, and prepare a product with a thickness of about 5m / s. 130μm, about 5mm wide, about 0.8m long Ti8Fe8Al28Ni18Cu30Cr8 high-entropy interlayer alloy foil. The high-entropy intermediate layer alloy foil was used to fold and perform resistance spot welding on TA2 / 0Cr18Ni9Ti, and the tensile shear strength of the welded joint was about 293MPa.

Embodiment 2

[0032] According to the preparation method of the above-mentioned high-entropy interlayer alloy, the elements and contents of each component are selected according to the data of the high-entropy interlayer alloy Example 2 listed in Table 1, and the surface speed of the roll is controlled at 5m / s to prepare a product with a thickness of approx. 130μm, about 5mm wide, about 0.8m long Ti8Fe8Al28Ni18Cu30Cr8 high-entropy interlayer alloy foil. The high-entropy intermediate layer alloy foil was used to fold and perform resistance spot welding on TA2 / 0Cr18Ni9Ti, and the tensile shear strength of the welded joint was about 293MPa.

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Abstract

The invention discloses a high-entropy interlayer alloy, which comprises the following components in atomic percentage: 5-10% of Ti, 5-10% of Fe, 25-30% of Al, 15-20% of Ni, 30-35% of Cu and 5-10% of Cr. The invention also discloses a method for welding TA2 / 0Cr18Ni9Ti by the high-entropy effect, which comprises the following steps that: high-entropy interlayer alloy is placed between the two plates to be welded, the high-entropy interlayer alloy is in a foil folding structure, and the high-entropy interlayer alloy and local parent metal are subjected to heat fusing by an interface resistor ina resistance spot welding mode, so that the high performance welding of TA2 / 0Cr18Ni9Ti can be realized. According to the method and the high-entropy interlayer alloy of the method, which are disclosed by the invention, the high-entropy interlayer alloy has the advantages of favorable strength, toughness and corrosion resistance, is easy to process and form and is convenient to weld and assembly. The preparation method has the advantages of simple step and low manufacture cost and is convenient to popularize.

Description

technical field [0001] The invention belongs to the field of welding technology, and relates to a high-entropy interlayer alloy applied to high-entropy effect welding of TA2 / 0Cr18Ni9Ti, and also relates to a method for applying high-entropy effect to weld TA2 / 0Cr18Ni9Ti. Background technique [0002] Titanium and its alloys have high specific strength and good corrosion resistance, and are important aerospace structural materials. However, due to the high price of titanium metal, its further development and application are limited. Steel is cheap and has good thermoelectric and mechanical properties. In some cases, dissimilar material joints that combine the excellent properties of titanium alloy and stainless steel are required, such as some parts in nuclear fuel reprocessing equipment in nuclear power plants, satellite fuel injectors and components in attitude propulsion control systems etc. Recently, they are trying to be used as anti-corrosion linings for marine struct...

Claims

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Application Information

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IPC IPC(8): C22C30/02B22D11/06B23K35/30B23K11/11
Inventor 翟秋亚田健徐锦锋
Owner XIAN UNIV OF TECH
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