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Arc fuse preparation method of ODS steel

A technology of ODS and fuse, applied in the field of high-temperature alloys, can solve the problems of difficulty in meeting the huge demand for structural materials, low manufacturing efficiency, complex process, etc., and achieve the effect of low cost, high production efficiency and uniform distribution

Active Publication Date: 2022-03-25
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the processes for preparing ODS steel containing nanoclusters include isostatic pressing, hot extrusion, and spark plasma sintering. The fourth generation of nuclear reactors has a huge demand for structural materials

Method used

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  • Arc fuse preparation method of ODS steel
  • Arc fuse preparation method of ODS steel
  • Arc fuse preparation method of ODS steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Fe, Cr, Ti, Si and Y 2 o 3 Powder according to mass fraction, 90.7% Fe, 9% Cr, 0.1% Ti, 0.1% Si, 0.1% Y 2 o 3 It is configured into a mixed powder, and then placed in a planetary ball mill for mechanical alloying, the ball milling time is 10 hours, the ball-to-material ratio is 7:1, the ball milling speed is 200rpm, and high-purity argon is used for protection during the ball milling process;

[0027] (2) the alloy powder prepared by above-mentioned mechanical alloying and B 2 o 3 , ZrSiO 4 and TiO 2 Mix evenly on a planetary ball mill, add B 2 o 3 , ZrSiO 4 and TiO 2 The mass percentages of the alloy powder are: 0.1% B 2 o 3 , 0.5% ZrSiO 4 , 0.2%TiO 2 ; The ball milling time is 0.5h, the ball-to-material ratio is 5:1, the ball milling speed is 50rpm, and the ball milling medium is absolute ethanol.

[0028] (3) Dry the powder after ball milling in a vacuum drying oven at a temperature of 60°C for 0.5h and a vacuum degree of not higher than 1Pa;

[00...

Embodiment 2

[0033] (1) Fe, Cr, W, Ti, Si and Y2O3 powders are calculated according to mass fraction, 63.6% Fe, 25% Cr, 5.0% W, 0.4% Ti, 5.0% Si, 1.0% Y 2 o 3 It is configured into a mixed powder, and then placed in a planetary ball mill for mechanical alloying, the ball milling time is 100h, the ball-to-material ratio is 30:1, the ball milling speed is 500rpm, and high-purity argon is used for protection during the ball milling process;

[0034] (2) the alloy powder prepared by above-mentioned mechanical alloying and B 2 o 3 , ZrSiO 4 and TiO 2 Mix well on a planetary ball mill. Joined B 2 o 3 , ZrSiO 4 and TiO 2 The mass percentages of the alloy powder are: 0.5% B 2 o 3 , 1.0% ZrSiO 4 , 1.0%TiO 2 ; The ball milling time is 10h, the ball-to-material ratio is 10:1, the ball milling speed is 300rpm, and the ball milling medium is absolute ethanol;

[0035] (3) Dry the powder after ball milling in a vacuum drying oven at a temperature of 120°C for 10 hours and a vacuum degree of...

Embodiment 3

[0040] (1) Fe, Cr, W, Ti, Si and Y2O3 powders are calculated according to mass fraction, 75.7% Fe, 18% Cr, 2.0% W, 1.0% Ti, 3.0% Si, 0.3% Y 2 o 3 It is configured into a mixed powder, and then placed in a planetary ball mill for mechanical alloying, the ball milling time is 100h, the ball-to-material ratio is 20:1, the ball milling speed is 300rpm, and high-purity argon is used for protection during the ball milling process;

[0041] (2) Alloy powder B prepared by above-mentioned mechanical alloying 2 o 3 , ZrSiO 4 and TiO 2 Mix evenly on a planetary ball mill, add B 2 o 3 , ZrSiO 4 and TiO 2 The mass percentages of the alloy powder are: 0.7% B 2 o 3 , 0.8% ZrSiO 4 , 1.0%TiO 2 ; The ball milling time is 2h, the ball-to-material ratio is 7:1, the ball milling speed is 200rpm, and the ball milling medium is absolute ethanol;

[0042] (3) Dry the powder after ball milling in a vacuum drying oven at a temperature of 90°C for 3 hours and a vacuum degree of not higher th...

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Abstract

The invention provides an arc fuse preparation method of ODS steel, which comprises the following steps of: mechanically alloying Fe, Cr, W, Ti, Si and Y2O3 powder by adopting a planetary ball mill, adding B2O3, ZrSiO4 and TiO2, uniformly mixing, drying in a vacuum drying oven, filling powder into an O-shaped steel pipe, tightly rolling by using a rolling mill, and performing rough drawing and fine drawing to obtain a flux-cored wire, the welding wire is used as a consumable electrode to carry out electric arc fuse wire additive manufacturing, cutting and polishing on a steel substrate. The production efficiency is high, the process cost is low, the prepared ODS steel is uniform in strengthening phase distribution, the room-temperature tensile strength sigma b is larger than or equal to 1200 MPa, the ductility is larger than or equal to 15%, and the tensile strength sigma b at the temperature of 800 DEG C is larger than or equal to 300 MPa and is equivalent to that of a traditional Fe-Cr-W-Ti-Y2O3 system alloy. The ODS steel can meet the requirement for batch preparation of nuclear fission fuel cladding pipes and nuclear fusion reactor first wall structure materials.

Description

technical field [0001] The invention belongs to the technical field of superalloys, and in particular relates to a method for preparing an arc fuse of ODS steel. Background technique [0002] ODS steel has the advantages of high thermal conductivity, low thermal expansion coefficient, low radiation swelling rate, corrosion resistance of liquid metals such as PbLi, PbBi, and Na, and good high temperature creep resistance. With great application potential, it has become the preferred structural material for supercritical water reactors and lead-cooled fast reactors. Its excellent high-temperature performance is mainly due to the uniform dispersion of Y-Ti-O nanoclusters with extremely small size and high distribution density in the matrix. At present, the processes for preparing ODS steel containing nanoclusters include isostatic pressing, hot extrusion, and spark plasma sintering. Fourth-generation nuclear reactors have a huge demand for structural materials. [0003] Ther...

Claims

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Application Information

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IPC IPC(8): C22C38/22C22C38/28C22C38/34C22C38/02C22C33/02B22F10/22B22F9/04B33Y10/00B33Y70/10B33Y40/10
CPCC22C38/22C22C38/28C22C38/34C22C38/02C22C33/0228C22C33/0285B22F10/22B22F9/04B33Y10/00B33Y70/10B33Y40/10B22F2009/041B22F2009/043Y02P10/25Y02E30/30
Inventor 姚振华苏沣李元元陈鹏闫墩磊
Owner WUHAN UNIV OF TECH
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