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Boron-rich nickel-tungsten-based alloy material for nuclear shielding and preparation method thereof

A technology based on alloys and nuclear shielding, applied in the field of nuclear functional special alloy materials, can solve the problems of reduced thermal workability of materials, complex processes, and difficulties in preparing boron steel

Active Publication Date: 2021-04-09
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the solubility of boron in stainless steel is low, and excessive boron addition will precipitate a large amount of borides (Fe, Cr) at the grain boundaries. 2 B, the hot workability of the material is greatly reduced, and it is extremely difficult to prepare boron steel with higher boron content
B prepared by powder metallurgy method 4 C / Al neutron absorbing material has complex process, B 4 Serious interfacial reaction between C and Al, corrosion resistance, radiation resistance, and aging during use

Method used

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  • Boron-rich nickel-tungsten-based alloy material for nuclear shielding and preparation method thereof
  • Boron-rich nickel-tungsten-based alloy material for nuclear shielding and preparation method thereof
  • Boron-rich nickel-tungsten-based alloy material for nuclear shielding and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] In this embodiment, a boron-rich nickel-tungsten-based alloy material for nuclear shielding is composed of the following mass percentages: C: 0.03%, N: 0.003%, S: 0.001%, P: 0.030%, W: 15.5% %, Cr: 17.3%, Al: 2.1%, B: 2.3%, Ti: 5.2%, and the remaining components are nickel and unavoidable impurities.

[0023] A method for preparing a boron-rich nickel-tungsten-based alloy material for nuclear shielding in this embodiment includes the following steps:

[0024] a. Vacuum induction smelting process is adopted. When batching raw materials, the main raw material components are composed according to the following mass percentage (%):

[0025]

[0026] Vacuum induction melting is carried out on all raw materials weighed after batching to obtain alloy melt;

[0027] b. casting the alloy melt prepared in the step a, and then going through the hot forging, hot rolling and annealing heat treatment process of the alloy ingot obtained by casting, and finally making a boron-rich ...

Embodiment 2

[0031] This embodiment is basically the same as Embodiment 1, especially in that:

[0032] In this embodiment, a boron-rich nickel-tungsten-based alloy material for nuclear shielding is composed of the following mass percentages: C: 0.023%, N: 0.003%, S: 0.002%, P: 0.025%, W: 5.0 %, Cr: 14.5%, Al: 0.80%, B: 1.8%, Ti: 3.95%, and the remaining components are nickel and unavoidable impurities.

[0033] A method for preparing a boron-rich nickel-tungsten-based alloy material for nuclear shielding in this embodiment includes the following steps:

[0034] a. Vacuum induction smelting process is adopted. When batching raw materials, the main raw material components are composed according to the following mass percentage (%):

[0035]

[0036]

[0037] Vacuum induction melting is carried out on all raw materials weighed after batching to obtain alloy melt;

[0038] b. This step is the same as in Embodiment 1.

[0039] Experimental test analysis

[0040] This example adopts the...

Embodiment 3

[0042] This embodiment is basically the same as the previous embodiment, and the special features are:

[0043] In this embodiment, a boron-rich nickel-tungsten-based alloy material for nuclear shielding is composed of the following mass percentages: C: 0.026%, N: 0.001%, S: 0.002%, P: 0.018%, W: 25.5% %, Cr: 16.8%, Al: 3.5%, B: 3.2%, Ti: 7.3%, and the remaining components are nickel and unavoidable impurities.

[0044] A method for preparing a boron-rich nickel-tungsten-based alloy material for nuclear shielding in this embodiment includes the following steps:

[0045] a. Vacuum induction smelting process is adopted. When batching raw materials, the main raw material components are composed according to the following mass percentage (%):

[0046]

[0047]

[0048] Vacuum induction melting is carried out on all raw materials weighed after batching to obtain alloy melt;

[0049] b. This step is the same as in Embodiment 1.

[0050] Experimental test analysis

[0051] ...

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Abstract

The invention discloses a boron-rich nickel-tungsten-based alloy material for nuclear shielding and a preparation method thereof. The boron-rich nickel-tungsten-based alloy material for nuclear shielding has excellent hot workability. With the increase of B content, the Ti content increases, and the Ti content The mass ratio to the B content satisfies Ti:B=(1.5-2.5):1. In situ formation of micro-nanoscale TiB during batching and vacuum induction melting 2 After the particles are evenly distributed in the melt, it is poured into shape, and then hot forged, hot rolled and annealed, and finally a nickel-rich tungsten-based alloy rod or plate for nuclear shielding with excellent thermal workability is obtained. The boron-rich nickel-tungsten-based alloy material for in-situ endogenous synthetic nucleation shielding of the present invention has the advantages of high strength, corrosion resistance, excellent heat-processing formability, and the like.

Description

technical field [0001] The invention relates to a nickel-based alloy material and a preparation method, in particular to a boron-rich nickel-tungsten-based alloy material and a preparation method for cooperative shielding of thermal neutrons and gamma rays, which are applied in the technical field of nuclear functional special alloy materials. Background technique [0002] With the intensification of the world's energy crisis, the research and application of new energy has become one of the strategic goals for the sustainable development of countries in the 21st century, and the development and application of nuclear energy technology has become the core of new energy development. The application of nuclear science and technology has penetrated into various fields such as ships, submarines, aviation, aerospace, medicine, and agriculture. While using nuclear energy, it is also accompanied by the generation of spent fuel. The spent fuel discharged from nuclear reactors has ext...

Claims

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Application Information

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IPC IPC(8): C22C19/05C22C1/02C22C1/10G21F1/08
CPCC22C19/056C22C19/055C22C1/1036G21F1/085C22C1/1052
Inventor 肖学山武昭妤赵亚伟
Owner SHANGHAI UNIV