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Aluminum-containing iron-based amorphous alloy resistant to corrosion of liquid lead-bismuth alloy

A liquid lead-bismuth alloy and iron-based amorphous alloy technology, which is applied in the field of alloy materials, can solve problems such as corrosion, and achieve the effects of improved stability, excellent corrosion resistance, and simple preparation methods

Pending Publication Date: 2022-07-08
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the problem that structural steel materials first corrode along the grain boundaries in liquid lead-bismuth alloys, the present invention proposes an iron-based amorphous alloy containing aluminum elements that is resistant to corrosion by liquid lead-bismuth alloys

Method used

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  • Aluminum-containing iron-based amorphous alloy resistant to corrosion of liquid lead-bismuth alloy
  • Aluminum-containing iron-based amorphous alloy resistant to corrosion of liquid lead-bismuth alloy
  • Aluminum-containing iron-based amorphous alloy resistant to corrosion of liquid lead-bismuth alloy

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Embodiment

[0034] This embodiment provides Fe-W-Cr-Mo-C-B-Y-Al amorphous alloys resistant to liquid lead and bismuth corrosion, which are respectively Fe-W-Cr-Mo-C-B-Y-Al amorphous alloys 43 W 4 Cr 20 Mo 10 C 15 B 6 Y 2 (denoted as Al0), (Fe 43 W 4 Cr 20 Mo 10 C 15 B 6 Y 2 ) 99 ·Al 1 (denoted as Al1), (Fe 43 W 4 Cr 20 Mo 10 C 15 B 6 Y 2 ) 97 ·Al 3 (denoted as Al3), (Fe 43 W 4 Cr 20 Mo 10 C 15 B 6 Y 2 ) 95 ·Al 5 (denoted as Al5)

[0035] The specific production process steps of the alloy are as follows:

[0036]1) Smelting: Weigh the raw materials according to the alloy composition ratio, put the prepared raw materials into a vacuum induction melting furnace, carry out vacuum induction melting in a titanium inhalation argon atmosphere, and cast them into ingots, then melt four times, and wait to be cast. After the ingot is completely solidified, the mold is opened and taken out.

[0037] 2) Stripping: the ingot is subjected to vacuum stripping. During the...

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Abstract

The invention relates to a liquid lead bismuth alloy corrosion-resistant aluminum-containing iron-based amorphous alloy. The alloy comprises the following chemical components: 40-45 at.% of Fe; 0 to 6 at.% of W; % of Cr: 18 to 21 at. % of Mo: 9 to 11 at. % of C: 4 to 6 at. % of B: 5 to 7 at. 1 to 3 at.% of Y; % of Al, wherein W and Al are not 0. Al is added on the basis of the Fe-W-Cr-Mo-C-B-Y amorphous alloy, so that the iron-based amorphous alloy can generate a compact Al2O3 oxidation film in the corrosion process of an oxygen-containing liquid lead bismuth alloy, and the corrosion resistance of the iron-based amorphous alloy is improved. The Fe-W-Cr-Mo-C-B-Y-Al iron-based amorphous alloy disclosed by the invention meets the performance requirements of high hardness and lead and bismuth corrosion resistance.

Description

technical field [0001] The invention relates to the technical field of high-temperature corrosion-resistant alloy materials, in particular to a liquid lead-bismuth alloy corrosion-resistant iron-based amorphous alloy containing aluminum. Background technique [0002] A lead-cooled fast reactor is a reactor that uses molten lead or lead-based alloys as a coolant. The lead-cooled fast reactor is the fourth-generation main reactor type currently being mainly developed. The lead-cooled fast reactor can not only participate in the separation and transmutation as the core component of the ADS, but also can be used as a separate nuclear reactor. At present, the coolant used in lead-cooled fast reactors is mainly liquid lead-bismuth alloy (LBE). stability, radiation stability and chemical stability. However, liquid lead-bismuth alloy will cause serious oxidation and dissolution corrosion problems of steel structural materials (such as 316L, T91, etc.) of lead-cooled fast reactor c...

Claims

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Application Information

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IPC IPC(8): C22C45/02B22D11/06C22C33/04
CPCC22C45/02C22C33/003C22C33/04B22D11/06Y02E30/30
Inventor 魏先顺金佳莲廖宗艺梁严
Owner TONGJI UNIV