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TiCuAlCrMoNb high-entropy alloy and preparing method thereof

A technology of high-entropy alloys and alloys, applied in the field of high-entropy alloys, can solve problems such as low strength of titanium alloys, marine biofouling, and lack of anti-fouling functions, and achieve enhanced corrosion resistance, strength, and seawater corrosion resistance excellent effect

Active Publication Date: 2016-12-14
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a TiCuAlCrMoNb high-entropy alloy and a preparation method thereof in order to overcome the disadvantages that the existing high-entropy alloys do not have the antifouling function, and the strength of the marine titanium alloy is relatively low, and marine biofouling is prone to occur.

Method used

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Examples

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Effect test

Embodiment 1

[0026] A kind of TiCuAlCrMoNb high entropy alloy, the component of this high entropy alloy is Ti a Cu b al c Cr d Mo e Nb f , where the molar ratio of any two elements is 1:1.

[0027] A preparation method of TiCuAlCrMoNb high-entropy alloy, comprising the following steps:

[0028] 1. Ultrasonic treatment: Put titanium sponge, Cu material, Al material and Cr material in the container, and then add Mo, After Nb, Al and / or Ti, add acetone until all materials are submerged, then ultrasonically clean for 15-20 minutes to remove oil and impurities attached to the surface; material, Al-Mo / Ti-Mo material and Al-Nb / Ti-Nb material were placed in a container, and absolute ethanol was added until all the materials were submerged, ultrasonically cleaned for 15-20 min, and dried in an oven to obtain Titanium sponge, Cu material, Al material, Cr material, Al-Mo / Ti-Mo material and Al-Nb / Ti-Nb material after ultrasonic treatment.

[0029] 2. Ingredients: Weigh the components, and weigh ...

Embodiment 2

[0035] A kind of TiCuAlCrMoNb high entropy alloy, the component of this high entropy alloy is Ti a Cu b Al c Cr d Mo e Nb f , wherein the mole percentage is 1 mol for a, 0.5 mol for b, 1 mol for c, 0.2 mol for d, 0.3 mol for e, and 0.5 mol for f.

[0036] A preparation method of TiCuAlCrMoNb high-entropy alloy, comprising the following steps:

[0037] 1. Ultrasonic treatment: Put titanium sponge, Cu material, Al material and Cr material in the container, and then add Mo, Nb, Al and Ti in the form of Ti-Mo and Al-Nb master alloys respectively, and then add After all the materials are submerged in acetone, ultrasonically clean for 15-18 minutes to remove the oil stains and impurities attached to the surface; Put the materials in a container, add absolute ethanol until all the materials are submerged, clean them ultrasonically for 15-18 minutes, and dry them in an oven to obtain sponge titanium, Cu materials, Al materials, Cr materials, Ti- Mo material and Al-Nb material. ...

Embodiment 3

[0044] A kind of TiCuAlCrMoNb high entropy alloy, the component of this high entropy alloy is Ti a Cu b Al c Cr d Mo e Nb f , wherein, the mole percentage is 0.9mol for a, 0.6mol for b, 0.2mol for c, 0.5mol for d, 0mol for e, and 0.05mol for f.

[0045] A preparation method of TiCuAlCrNb high-entropy alloy, comprising the following steps:

[0046] Step 1. Put titanium sponge, Cu material, Al material and Cr material in the container, then add Nb and Ti in the container in the form of Ti-Nb master alloy respectively, add acetone until all materials are submerged, and then ultrasonically Wash for 15-20 minutes to remove the oil stains and impurities attached to the surface; then place the titanium sponge, Cu material, Al material, Cr material, and Ti-Nb material after removing impurities into the container respectively, and add absolute ethanol to each material After being completely submerged, ultrasonic cleaning was performed for 15-20 minutes, and then dried in an oven ...

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Abstract

The invention provides a TiCuAlCrMoNb high-entropy alloy and a preparing method thereof. The component of the high-entropy alloy is TiaCubAlcCrdMoeNbf, wherein a, b, c, d, e and f separately represent the molar rate of each element, a is larger than or equal to 0.3 and smaller than or equal to 1.5, b is larger than or equal to 0.2 and smaller than or equal to 1.2, c is larger than or equal to 0.2 and smaller than or equal to 1.5, d is larger than or equal to 0.05 and smaller than or equal to 1.2, e is larger than or equal to 0 and smaller than or equal to 1.2, and f is larger than or equal to 0.05 and smaller than or equal to 1.2. Through a non-consumable vacuum electric arc melting technology or electromagnetic levitation melting technology, a high-entropy alloy material which is resistant to seawater corrosion and has a certain anti-fouling function is prepared, the microhardness of the high-entropy alloy material is not lower than 600HV, the defects of traditional high-entropy alloy are compensated, and the application requirements of further ship materials are met.

Description

technical field [0001] The invention relates to the technical field of high-entropy alloys, in particular to a TiCuAlCrMoNb high-entropy alloy and a preparation method thereof. Background technique [0002] The seawater pipeline system is distributed in various parts of the ship, mainly providing cooling seawater and fire-fighting water to the whole ship, and providing ballast water required by the ship's ballast water system to ensure the normal operation of the ship's key equipment. , The maintenance is complicated, and most of them are in the harsh environment of humidity, high temperature and high salinity, and the service conditions are harsh. Titanium alloy has the advantages of low density, high specific strength, non-magnetic, seawater corrosion resistance, etc., and has broad application prospects in the field of ships. The yield strength of existing marine titanium and titanium alloys is generally below 1150MPa, which cannot meet the application requirements of hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C30/02C22C1/03
CPCC22C1/03C22C30/02
Inventor 李兆峰李振亚李士凯杨学东
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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