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A kind of high-strength zirconium alloy and its preparation method

A zirconium alloy, high-strength technology, applied in the field of alloys, can solve problems such as not being able to meet the requirements for the use of structural materials, and achieve the effects of reducing hydrogen absorption, reducing alloy costs, and easy operation

Active Publication Date: 2019-09-27
中鼎特金秦皇岛科技股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If you want to expand the field of use of zirconium alloys and apply zirconium alloys to structural materials, the current strength of zirconium alloys cannot meet the requirements for the use of structural materials

Method used

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  • A kind of high-strength zirconium alloy and its preparation method
  • A kind of high-strength zirconium alloy and its preparation method

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Experimental program
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Effect test

preparation example Construction

[0025] The present invention provides a method for preparing the high-strength zirconium alloy described in the above scheme, comprising the following steps:

[0026] (1) crushing niobium source, aluminum source, titanium source and industrial-grade zirconium sponge and then pressing to form a monolithic electrode; said industrial-grade zirconium sponge includes hafnium element, and hafnium element and zirconium element are associated relationships;

[0027] (2) welding the monolithic electrode group obtained in the step (1) into a consumable electrode;

[0028] (3) The consumable electrode obtained in the step (2) is subjected to vacuum consumable melting to obtain a high-strength zirconium alloy.

[0029] In the invention, the niobium source, the aluminum source, the titanium source and the industrial-grade zirconium sponge are crushed and pressed into shape to obtain a monolithic electrode. In the present invention, the industrial-grade zirconium sponge includes hafnium el...

Embodiment 1

[0041] The high-strength zirconium alloy provided in Example 1 includes the following components in weight percent:

[0042] Niobium: 2.0%, hafnium: 0.01%, aluminum: 0.3%, titanium: 0.1%, and the balance is zirconium.

[0043] (1) According to the ratio of the alloy materials, the industrial-grade zirconium sponge, zirconium-niobium master alloy, and zirconium-aluminum master alloy sponge titanium are crushed and pressed into a single electrode;

[0044] (2) welding the monolithic electrode group obtained in the step (1) into a consumable electrode;

[0045] (3) Carry out vacuum smelting to the consumable electrode that described step (2) obtains, and vacuum smelting voltage is 35V, and vacuum degree is 10 -3 Pa, vacuum smelting current is 260DA, smelting three times to obtain high-strength zirconium alloy.

[0046] Cut from the obtained high-strength zirconium alloy such as figure 1 The sheet tensile samples of the indicated dimensions were subjected to uniaxial tensile te...

Embodiment 2

[0048] The high-strength zirconium alloy provided in Example 2 includes the following components in weight percentage:

[0049] Niobium: 2.5%, hafnium: 3.0%, aluminum: 1.6%, titanium: 1.35%, and the balance is zirconium.

[0050] (1) According to the ratio of the alloy materials, the industrial-grade zirconium sponge, zirconium-niobium master alloy, and zirconium-aluminum master alloy sponge titanium are crushed and pressed into a single electrode;

[0051] (2) welding the monolithic electrode group obtained in the step (1) into a consumable electrode;

[0052] (3) Carry out vacuum smelting to the consumable electrode that described step (2) obtains, and vacuum smelting voltage is 37V, and vacuum degree is 10 -3 Pa, vacuum smelting current is 280DA, smelting three times to obtain high-strength zirconium alloy.

[0053] Cut from the obtained high-strength zirconium alloy such as figure 1 The sheet tensile samples of the indicated dimensions were subjected to uniaxial tensile...

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Abstract

The invention provides a zirconium alloy. The zirconium alloy comprises, by mass percentage, 2.0-3.0% of niobium, 0.01-5.0% of hafnium, 0.30-2.84% of aluminum, 0.10-2.69% of titanium and the balance zirconium. The zirconium alloy is prepared through a following method that firstly, an alloy raw material is pressed and formed, and single electrodes are obtained; secondly, the single electrodes obtained in the first step are combined and welded into a self-consumption electrode; and thirdly, the self-consumption electrode obtained in the second step is subjected to vacuum self-consumption smelting, and the high-strength zirconium alloy is obtained. The zirconium alloy has the beneficial effects of being high in strength and plasticity, and low in cost.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to a high-strength zirconium alloy and a preparation method thereof. Background technique [0002] The content of zirconium element in the earth's crust is very rich. Calculated according to the abundance, its content has exceeded Ni, Cu, Sn, Co and other elements. Metal zirconium has a low thermal neutron absorption cross-sectional area (second only to Be and Mg ), good thermal radiation performance and excellent corrosion resistance, and is often used as a nuclear reactor structural material. The raw material for nuclear zirconium alloys is atomic-level sponge zirconium separated from zirconium and hafnium. The use of zirconium alloys focuses on the high temperature and high pressure resistance and corrosion performance of zirconium alloys, and the requirements for its mechanical properties are not high. If you want to expand the field of use of zirconium alloys and apply zirconiu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C16/00C22C1/02C22C1/03
Inventor 刘日平张星周奕年马明臻刘曙光罗雷
Owner 中鼎特金秦皇岛科技股份有限公司