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A spent fuel storage b 4 Edge-flexible confinement rolling method of c/al composite sheet

A composite material and spent fuel technology, which is applied in the field of flexible constrained rolling of B4C/Al composite sheet edges for spent fuel storage, can solve the problems of reduced material utilization, poor plasticity and toughness, and increased production costs, and achieve a reduction in cost. The effect of reducing the number of times, reducing cracking, and improving production efficiency

Inactive Publication Date: 2020-07-31
MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the invention of the present invention is: for B 4 The plasticity and toughness of C / Al composite materials are poor. During the rolling process, the edges are easily cracked or even collapsed, which reduces the material utilization rate, increases the production cost, and makes the pass deformation smaller, and the production efficiency is affected. Constraints in providing a spent fuel storage with B 4 Flexible Constraint Rolling Method for Edges of C / Al Composite Sheets

Method used

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  • A spent fuel storage b <sub>4</sub> Edge-flexible confinement rolling method of c/al composite sheet
  • A spent fuel storage b <sub>4</sub> Edge-flexible confinement rolling method of c/al composite sheet
  • A spent fuel storage b <sub>4</sub> Edge-flexible confinement rolling method of c/al composite sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] 31wt.%B 4 C / 6061Al composite material, the specific steps are as follows.

[0053] 1. Cold compact preparation: 31wt.%B 4 The powders of the various components of the C / 6061Al composite material are mixed according to the designed composition ratio, and then cold-pressed blanks of the composite material are prepared by cold isostatic pressing.

[0054] 2. Assembling inside the sheath: Assemble the cold compact of the composite material prepared in step 1 into the hot isostatic pressing iron sheath, and place 6061Al alloy strips on both sides and the space of the sheath to form aluminum cladding on both sides of the cold compact. structured as figure 1 shown.

[0055] 3. Hot isostatic pressing: put the package assembled in step 2 into the hot isostatic pressing furnace body, the hot isostatic pressing temperature is 610°C, the pressure is 10 MPa, and the holding time is 5 minutes to prepare a composite material blank with aluminum on the side.

[0056] 4. Billet pret...

Embodiment 2

[0060] 10wt.%B was prepared by using 2024Al as the side cladding aluminum material 4 C / 2024Al composite material, the specific steps are as follows.

[0061] 1. Preparation of cold-pressed blanks: Mix the powders of each component of the composite material according to the designed composition ratio, and then prepare the cold-pressed blanks of the composite material by cold isostatic pressing.

[0062] 2. Assembling in the sheath: Assemble the cold compact of composite material prepared in step 1 into the hot isostatic pressing iron sheath, and place 2024Al alloy strips on both sides and the space of the sheath to form aluminum cladding on both sides of the cold compact. structured as figure 1 shown.

[0063] 3. Hot isostatic pressing: put the package assembled in step 2 into the hot isostatic pressing furnace body, the hot isostatic pressing temperature is 500°C, the pressure is 50 MPa, and the holding time is 30 minutes to prepare a composite material blank with aluminum o...

Embodiment 3

[0068] 45wt.%B was prepared by using 1060Al as the side cladding aluminum material 4 C / 1060Al composite material, the specific steps are as follows.

[0069] 1. Preparation of cold-pressed blanks: Mix the powders of each component of the composite material according to the designed composition ratio, and then prepare the cold-pressed blanks of the composite material by cold isostatic pressing.

[0070] 2. Assembling inside the sheath: Assemble the cold compact of the composite material prepared in step 1 into the hot isostatic pressing iron sheath, and place 1060Al alloy strips on both sides and the space of the sheath to form aluminum cladding on both sides of the cold compact. structured as figure 1 shown.

[0071] 3. Hot isostatic pressing: put the package assembled in step 2 into the hot isostatic pressing furnace body, the hot isostatic pressing temperature is 650°C, the pressure is 30 MPa, and the holding time is 15 minutes, to prepare a composite material blank with a...

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Abstract

The invention discloses a rolling method for edge flexible constraint of a B<4>C / AI composite material plate material used for spent fuel storage. The purpose of the method is to solve problems that the plasticity and toughness of B<4>C / AI composite materials are poor, edges are easy to crack and break during a rolling process, and so the material utilization rate is reduced, the production cost is increased, the pass deformation is small, and the production efficiency is restricted. In the rolling method, a composite cold pressed blank and an aluminum alloy bar on the side thereof can realizemetallurgical bonding under a joint action of temperature and pressure; in a rolling deformation process, an edge of the blank is always under flexible constraint of a side surface sandwiched aluminum alloy, the edge tension stress is greatly reduced, thereby reducing the problems of edge cracking and breaking, and so, parts for sequent cutting are reduced, and the material utilization rate is greatly improved. Through determination, the rolling method can effectively alleviate the problem of cracking and breaking of the edge of the plate material, is remarkable in effect, and is of importantpractical significance for localization and industrialization application of the B<4>C / AI composite material plate material used for the spent fuel storage.

Description

technical field [0001] The present invention relates to the field of material preparation, especially B 4 The field of C / Al composite material rolling, specifically a kind of B for spent fuel storage 4 Edge flexible confinement rolling method of C / Al composite sheet. Background technique [0002] With the rapid development of my country's nuclear power industry, the amount of spent fuel discharged from nuclear reactors has also increased dramatically. However, the current spent fuel processing technology is not yet mature. Therefore, the accumulated amount of spent fuel produced during the development of nuclear power will far exceed the reprocessing capacity of spent fuel, and the reprocessing of spent fuel will be a long-term and arduous task. After the spent fuel is unloaded from the core, it must be stored in the reactor first, and then sent to reprocessing after the short-lived nuclide decays for a certain period of time, or directly stored in the geological library, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F7/04B22F3/15B22F3/18
CPCB22F3/15B22F3/18B22F7/04B22F2003/185
Inventor 罗昊庞晓轩刘炳刚蔡永军陈正觉王伟张佳佳张天助
Owner MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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