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The preparation method of zrtialniv alloy

A technology for alloys and alloy materials, which is applied in the field of ZrTiAlNiV alloy preparation, can solve problems such as instability and reduced material elongation, and achieve the effects of refining grains, increasing elongation, and fine and uniform product structure

Active Publication Date: 2020-02-04
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The grain size of the material prepared by this method is very large, ranging from 300 to 500 μm, and a large amount of impurities are easily introduced during the preparation process, so that the elongation of the material is reduced and unstable

Method used

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  • The preparation method of zrtialniv alloy

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preparation example Construction

[0017] The invention provides a kind of preparation method of ZrTiAlNiV alloy, it specifically comprises the following steps:

[0018] S1. Powder mixing:

[0019] Mix zirconium powder, titanium powder, aluminum powder, nickel powder and vanadium powder, the mass percentage of each chemical composition is: zirconium 45-50%, titanium 42-45%, aluminum 2-10%, nickel 2~3%, vanadium 1~3%; the average particle size of zirconium powder, titanium powder, aluminum powder, nickel powder and vanadium powder is 10~20μm; the introduction of Ni element can effectively improve the elongation of the alloy Rate;

[0020] S2. Use spark plasma sintering process to sinter under electric field assistance:

[0021] Put the above mixed powder into the mold, under the protection of nitrogen, use the spark plasma sintering process to sinter with the assistance of electric field, the sintering temperature is 1400℃~1500℃, the sintering pressure is 30MPa, the heating rate is 30℃ / min, the holding time 5...

Embodiment 1

[0025] S1. Powder mixing:

[0026] Mix zirconium powder, titanium powder, aluminum powder, nickel powder and vanadium powder, the mass percentage of each chemical composition is: zirconium 45%, titanium 42%, aluminum 10%, nickel 2%, vanadium 2% , put the mixed powder into a ball mill for ball milling for 1 hour to ensure that the powder is mixed evenly;

[0027] S2. Use spark plasma sintering process to sinter under electric field assistance:

[0028] Put the above mixed powder into the mold, and under the protection of nitrogen, use the spark plasma sintering process to sinter with the assistance of an electric field. The sintering temperature is 1400°C, the sintering pressure is 30MPa, the heating rate is 30°C / min, and the holding time is 30min. The nitrogen pressure is 0.1Pa;

[0029] S3. The temperature is lowered with the furnace, and taken out to obtain the ZrTiAlNiV alloy.

[0030] Such as figure 1 said, figure 1 The SEM image of the prepared ZrTiAlNiV alloy, the g...

Embodiment 2

[0032] S1. Powder mixing:

[0033] Mix zirconium powder, titanium powder, aluminum powder, nickel powder and vanadium powder, the mass percentage of each chemical composition is: zirconium 45%, titanium 42%, aluminum 8%, nickel 3%, vanadium 2% , put the mixed powder into a ball mill for ball milling for 1 hour to ensure that the powder is mixed evenly;

[0034] S2. Use spark plasma sintering process to sinter under electric field assistance:

[0035] Put the above mixed powder into the mold, under the protection of nitrogen, use the spark plasma sintering process to sinter with the assistance of electric field, the sintering temperature is 1500°C, the sintering pressure is 30MPa, the heating rate is 30°C / min, and the holding time is 20min. The nitrogen pressure is 0.1Pa;

[0036] S3. The temperature is lowered with the furnace, and taken out to obtain the ZrTiAlNiV alloy.

[0037] The grain size of the obtained ZrTiAlNiV alloy is 93 μm. A tensile test is carried out on the ...

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Abstract

The invention discloses a preparation method of a ZrTiAlNiV alloy, in particular to SPS electric field assisted sintering powder metallurgy. The preparation method comprises the following steps that S1, powder mixing is carried out, wherein zirconium powder, titanium powder, aluminum powder, nickel powder and vanadium powder with the average particle diameter being 10-20 microns are mixed, and themass percentages of all chemical components are that zirconium is 45%-50%, titanium is 42%-45%, aluminum is 2%-10%, nickel is 2%-3%, and vanadium is 1%-3%; S2, a spark plasma sintering process is adopted to conduct sintering under electric field assisting, wherein the mixed powder is charged into a sintering mold, a spark plasma sintering process is adopted to conduct sintering under electric field assisting under nitrogen gas protection, the sintering temperature is 1400 DEG C-1500 DEG C, the sintering pressure is 30 MPa, the heating rate is 30 DEG C / min, the holding time is 5 min-30 min, and the nitrogen pressure is 0.1 Pa; and S3, furnace cooling is carried out, and the ZrTiAlNiV alloy is obtained after taken out. The addition of the Ni element effectively increases the elongation ofthe ZrTiAlNiV alloy, the preparation method is simple, introducing of a large amount of impurities is avoided, the grain size of the prepared alloy is refined, the strength and elongation are improved, and the performance is uniform and stable.

Description

technical field [0001] The invention belongs to the technical field of material preparation and relates to a preparation method of a ZrTiAlNiV alloy. Background technique [0002] Zirconium alloy is a high-quality nuclear radiation-resistant material that has been tested for a long time. It has the potential to resist radiation damage; it also has excellent corrosion resistance and has the potential to resist atomic oxygen erosion; its expansion coefficient is small, and its structure and size are stable. Precision components with potential for resistance to alternating temperatures and precision machining. ZrTiAlNiV alloy is one of the rapidly developing zirconium alloy varieties in the field of structural materials. Its strength and hardness are very high. Its current preparation method is to compress the five-element alloy raw materials of Zr, Ti, Al, Ni and V into a cylindrical shape. The raw material blocks are then welded into electrodes for consumable electric arc fu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C16/00C22C30/00C22C1/04B22F3/105
Inventor 骆俊廷王昊天顾勇飞张春祥
Owner YANSHAN UNIV
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