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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  • Abstract
  • Description
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  • 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

Method used

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

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Example Embodiment

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

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

[0019] 1.1) Convert the atomic percentage of the high-entropy intermediate layer alloy components into mass percentages, weigh the following high-purity metals according to the mass percentages, and the purity of all high-purity metals is higher than 99.99%. Mix the components Evenly, compacted into a blank for later use.

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

Example Embodiment

[0029] Example 1

[0030] According to the above-mentioned preparation method of the high-entropy intermediate layer alloy, the component elements and contents are selected according to the data of the high-entropy intermediate layer alloy in Example 1 listed in Table 1, and the linear velocity of the roll surface is controlled at 5m / s to prepare a thickness of about Ti8Fe8Al28Ni18Cu30Cr8 high-entropy intermediate layer alloy foil with a width of about 5mm and a length of about 0.8m. The high-entropy intermediate layer alloy foil is folded to perform resistance spot welding on TA2 / 0Cr18Ni9Ti, and the tensile shear strength of the welded joint is about 293MPa.

Example Embodiment

[0031] Example 2

[0032] According to the above-mentioned preparation method of the high-entropy intermediate layer alloy and the data of the high-entropy intermediate layer alloy in Example 2 listed in Table 1, the component elements and contents are selected, and the linear velocity of the roll surface is controlled at 5m / s to prepare a thickness of about Ti8Fe8Al28Ni18Cu30Cr8 high-entropy intermediate layer alloy foil with a width of about 5mm and a length of about 0.8m. The high-entropy intermediate layer alloy foil is folded to perform resistance spot welding on TA2 / 0Cr18Ni9Ti, and the tensile shear strength of the welded joint is 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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