CN102676858A - Preparation method of high density boral metal matrix composite material - Google Patents
Preparation method of high density boral metal matrix composite material Download PDFInfo
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- CN102676858A CN102676858A CN2012101554405A CN201210155440A CN102676858A CN 102676858 A CN102676858 A CN 102676858A CN 2012101554405 A CN2012101554405 A CN 2012101554405A CN 201210155440 A CN201210155440 A CN 201210155440A CN 102676858 A CN102676858 A CN 102676858A
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Abstract
The invention provides a preparation method of a high density boral metal matrix composite material. The method comprises the following steps of: mixing B4C powder and Al alloy powder according to the predetermined chemical proportion, and uniformly dispersing the B4C particles in the Al alloy matrix; pressing the mixture into a core blank with density of 70-95% TD to form a core blank of homogeneous blank; and sintering the core blank in an aluminum alloy frame, and carrying out hot rolling on the sintered core blank; carrying out 90-degree reversing rolling when the density of the core blank reaches 70-95% TD; and then carrying out cold roll straightening. Compared with the prior art, the preparation method provided by the invention has a simple technological process; the high density composite material formed by uniformly dispersing the B4C powder in the aluminum matrix has better property, wherein the content of B4C is as high as 65% by weight; and the high density boral metal matrix composite material can be used as a neutron absorption material for critical safety control of a spent fuel transportation and storage system, and the intensive storage of the spent fuel is realized.
Description
Technical field
The invention belongs to a kind of preparation technology of matrix material, be specifically related to the blank rolling and prepare high desnity metal based composites B
4The method of C-Al neutron absorber plate.
Background technology
The Boral metal matrix composite sheet is to be composited in alloy matrix aluminum by the norbide even dispersion, and wherein norbide is the dispersion-strengthened phase, and duraluminum is the matrix phase.This material contains the good boron of neutron absorptive character, can be used as the neutron absorbing material.Its remarkable advantage is high, the long service life of corrosion-resistant, anti-irradiation, boron content, as spent fuel neutron absorbing material, can improve the economy and the security of spent fuel storing.
Norbide content can be up to 65wt%, and according to design demand, the adjustable extent of norbide content is very wide, makes the design of spent fuel transportation and storage system more flexible, can realize the more intensive storage of spent fuel.
At present, this preparation methods mainly contains metallurgical press-working method and powder metallurgy press-working method.The powder metallurgy press-working method can be improved the distributing homogeneity of norbide greatly.
Like application number is that 200910263588.9 Chinese patent is exactly a kind of powder metallurgy press-working method, and it has been described, and " B is used in a kind of spent fuel storing
4The preparation method of C-Al neutron absorber plate ", this method is pressed compact to be contained in the duraluminum box be rolled, blank and duraluminum box metallurgical binding in the operation of rolling form B
4The C even dispersion is in alloy matrix aluminum and be surrounded by the matrix material of a kind of sandwich structure of duraluminum involucrum, and promptly this method can only prepare B
4The material of C even dispersion Layer cake dry type of alclad alloy cladding in Al alloy substrate China and foreign countries, and can not prepare do not have the duraluminum involucrum, the better high-density carbonization of performance boron aluminum metal-matrix composite material.
Summary of the invention
The objective of the invention is to: provide a kind of B
4C powder even dispersion forms the preparation method of high-density carbonization boron aluminum metal-matrix composite material in the Al matrix.
Technical scheme of the present invention is following:
A kind of preparation method of high-density carbonization boron aluminum metal-matrix composite material, step is following:
Step 1 batch mixing: with the B of massfraction 10～65wt%, granularity 20～40 μ m
4Al powdered alloy uniform mixing in mixer of C powder and massfraction 35～90wt%, granularity 10～20 μ m;
Step 2 core base compacting: with the B that mixes
4The C Al alloy powder, being pressed into density is the core base of 70～85%TD;
Step 3 core base sintering: the aluminum alloy frame of packing into of the core base after will suppressing is placed on vacuum sintering furnace and carries out vacuum sintering, keeps vacuum tightness in the vacuum sintering furnace 10
-2～10
-4Pa, sintering temperature is 400 ℃～540 ℃, sintering time is 2～18 hours;
Step 4 is rolled into plate: the core base behind the taking-up sintering carries out the multiple tracks hot rolling under 400 ℃ ~ 530 ℃ temperature; Rolling every time deflection of core base is 20%～40%; When core base density reached 80 ~ 95%TD, it was rolling to carry out 90 ° of switching-overs, obtained the sheet material of predetermined thickness dimension;
The cold rolling aligning of step 5; Sheet material after the hot rolling is carried out cold rolling, after anneal, align, obtaining density is the smooth sheet material of 99.00 ~ 99.20%TD.
Effect of the present invention is: compared with prior art, preparing method's technological process of the present invention is simple, B
4The high density composite more excellent performance that C powder even dispersion forms in aluminium base, wherein B
4C content can be used as the neutron absorbing material of the criticality safety control of spent fuel transportation and storage system up to 65wt%, realizes the intensive storage of spent fuel.
Embodiment
Method of the present invention is pressed compact to be placed in the duraluminum frame be rolled, and does not have the shell of duraluminum, and that finally form is B
4The homogeneous composite material that C powder even dispersion forms in alloy matrix aluminum.
Preparing method of the present invention is with B according to predetermined proportion
4C powder and Al powdered alloy uniform mixing in mixer; With the B that mixes
4The C Al alloy powder is pressed into the core base with certain density; Core base after will suppressing again is installed in the aluminum alloy frame for preparing in advance and places vacuum sintering furnace to carry out vacuum sintering; Carry out hot rolling behind the sintering, after the core base reaches certain density, carry out 90 ° of rolling hot rolled plates that obtain of switching-over again, again the sheet material after the hot rolling is carried out cold rollingly, after anneal, align, obtain the sheet material of predetermined density.
Concrete steps are following:
Step 1 batch mixing: with the B of massfraction 10～65wt%, granularity 20～40 μ m
4Al powdered alloy uniform mixing in mixer of C powder and massfraction 35～90wt%, granularity 10～20 μ m;
Step 2 core base compacting: with the B that mixes
4The C Al alloy powder, being pressed into density is the core base of 70～85%TD;
Step 3 core base sintering: the aluminum alloy frame of packing into of the core base after will suppressing is placed on vacuum sintering furnace and carries out vacuum sintering, keeps vacuum tightness in the vacuum sintering furnace 10
-2～10
-4Pa, sintering temperature is 400 ℃～540 ℃, sintering time is 2～18 hours;
Step 4 is rolled into plate: the core base behind the taking-up sintering carries out the multiple tracks hot rolling under 400 ℃ ~ 530 ℃ temperature; Rolling every time deflection of core base is 20%～40%; When core base density reached 80 ~ 95%TD, it was rolling to carry out 90 ° of switching-overs, obtained the sheet material of predetermined thickness dimension;
The cold rolling aligning of step 5; Sheet material after the hot rolling is carried out cold rolling, after anneal, align, obtaining density is the smooth sheet material of 99.00 ~ 99.20%TD.
Below in conjunction with embodiment the present invention is further described:
Embodiment 1
Step 1 batch mixing: with the B of massfraction 10wt%, mean particle size 20 μ m
4Al powdered alloy uniform mixing in mixer of C powder and massfraction 90wt%, mean particle size 10 μ m;
Step 2 core base compacting: with the B that mixes
4The C Al alloy powder is pressed into the core base, core base density 70%;
Step 3 core base sintering: the aluminum alloy frame of packing into of the core base after will suppressing is built in vacuum sintering furnace and carries out vacuum sintering, keeps vacuum tightness in the vacuum sintering furnace 10
-2Pa, sintering temperature is 400 ℃, sintering time is 18 hours;
Step 4 is rolled into plate: the core base behind the sintering is carried out hot rolling under 400 ℃ of temperature, core base rolling pass deflection is 20%, and when core base density reached 80%TD, it was rolling to carry out 90 ° of switching-overs, obtained the sheet material of predetermined thickness dimension;
The cold rolling aligning of step 5; Sheet material after the hot rolling is carried out cold rolling, after anneal, align, obtaining density is the smooth sheet material of 99.20%TD.
The tensile mechanical properties of sheet material is as shown in table 1 under above-mentioned preparation condition:
Table 1 panel density is the tensile mechanical properties of 99.20%TD
| Sample | Ys Rp0.2 /MPa | Tension is strong Rm/MPa | Unit elongation A/% |
| Al+10%B 4C | 121 | 151 | 1.2 |
Above-mentioned ys is the parameter of beginning plastic deformation; Above-mentioned tension is by force the parameter that plastic deformation finishes the neutron absorber plate fracture, and unit elongation is the ratio of preceding maximum length of this neutron absorber plate fracture and original length.
Embodiment 2
Step 1 batch mixing: with the B of massfraction 30wt%, mean particle size 40 μ m
4Al powdered alloy uniform mixing in mixer of C powder and massfraction 70wt%, mean particle size 20 μ m;
Step 2 core base compacting: the Al alloy powder that mixes is pressed into the core base, core base density 80%;
Step 3 core base sintering: the aluminum alloy frame of packing into of the core base after will suppressing is built in vacuum sintering furnace and carries out vacuum sintering, keeps vacuum tightness in the vacuum sintering furnace 10
-3Pa, sintering temperature is 470 ℃, is sintered to 10 hours time;
Step 4 is rolled into plate: the core base behind the sintering is carried out hot rolling under 500 ℃ of temperature, core base rolling pass deflection is 35%, and it is rolling when core base density reaches 85%TD, to carry out 90 ° of switching-overs, obtains the sheet material of predetermined thickness dimension;
The cold rolling aligning of step 5; Sheet material after the hot rolling is carried out cold rolling, after anneal, align, obtaining density is the smooth sheet material of 99.10%TD.
The tensile mechanical properties of sheet material is as shown in table 2 under above-mentioned preparation condition:
Table 2 panel density is the tensile mechanical properties of 99.10%TD
| Sample | Ys Rp0.2 /MPa | Tension is strong Rm/MPa | Unit elongation A/% |
| Al+30%B 4C | 128 | 166 | 1.5 |
Embodiment 3
Step 1 batch mixing: with the B of massfraction 65wt%, mean particle size 40 μ m
4Al powdered alloy uniform mixing in mixer of C powder and massfraction 35wt%, mean particle size 10 μ m;
Step 2 core base compacting: the Al alloy powder that mixes is pressed into the core base, core base density 85%;
Step 3 core base sintering: the aluminum alloy frame of packing into of the core base after will suppressing is built in vacuum sintering furnace and carries out vacuum sintering, keeps vacuum tightness in the vacuum sintering furnace 10
-4Pa, sintering temperature is 540 ℃, is sintered to 2 hours time;
Step 4 is rolled into plate: the core base behind the sintering is carried out hot rolling under 530 ℃ of temperature, core base rolling pass deflection is 40%, and it is rolling when core base density reaches 95%TD, to carry out 90 ° of switching-overs, obtains the sheet material of predetermined thickness dimension;
The cold rolling aligning of step 5; Sheet material after the hot rolling is carried out cold rolling, after anneal, align, obtaining density is the smooth sheet material of 99.00%TD.
The tensile mechanical properties of sheet material is as shown in table 3 under above-mentioned preparation condition:
Table 3 panel density is the tensile mechanical properties of 99.00%TD
| Sample | Ys Rp0.2 /MPa | Tension is strong Rm/MPa | Unit elongation A/% |
| Al+45%B 4C | 136 | 178 | 2.5 |
Claims (1)
1. the preparation method of a high-density carbonization boron aluminum metal-matrix composite material, step is following:
Step 1 batch mixing: with the B of massfraction 10～65wt%, granularity 20～40 μ m
4Al powdered alloy uniform mixing in mixer of C powder and massfraction 35～90wt%, granularity 10～20 μ m;
Step 2 core base compacting: with the B that mixes
4The C Al alloy powder, being pressed into density is the core base of 70～85%TD;
Step 3 core base sintering: the aluminum alloy frame of packing into of the core base after will suppressing is placed on vacuum sintering furnace and carries out vacuum sintering, keeps vacuum tightness in the vacuum sintering furnace 10
-2～10
-4Pa, sintering temperature is 400 ℃～540 ℃, sintering time is 2～18 hours;
Step 4 is rolled into plate: the core base behind the taking-up sintering carries out the multiple tracks hot rolling under 400 ℃ ~ 530 ℃ temperature; Rolling every time deflection of core base is 20%～40%; When core base density reached 80 ~ 95%TD, it was rolling to carry out 90 ° of switching-overs, obtained the sheet material of predetermined thickness dimension;
The cold rolling aligning of step 5; Sheet material after the hot rolling is carried out cold rolling, after anneal, align, obtaining density is the smooth sheet material of 99.00 ~ 99.20%TD.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103614584A (en) * | 2013-11-07 | 2014-03-05 | 海龙核材科技（江苏）有限公司 | Preparation method of aluminium matrix composite with high B4C content |
| CN104308161A (en) * | 2014-10-16 | 2015-01-28 | 中国工程物理研究院材料研究所 | Preparation method of low-cost boron carbide/aluminum composite board |
| CN104952500A (en) * | 2015-07-09 | 2015-09-30 | 中国核动力研究设计院 | Uranium-molybdenum alloy dispersion fuel plate manufacturing method |
| EP3104995A4 (en) * | 2014-02-13 | 2017-10-18 | Ceradyne Inc. | Method of making a metal matrix composite material |
| CN108735322A (en) * | 2018-06-04 | 2018-11-02 | 江苏核电有限公司 | A kind of stainless steel boron aluminum composite plate and manufacturing method |
| CN108735318A (en) * | 2018-06-04 | 2018-11-02 | 江苏核电有限公司 | A kind of the stainless steel boron aluminum composite plate and manufacturing method of PWR fuel assemblies storage lattice cell |
| CN109825743A (en) * | 2019-03-20 | 2019-05-31 | 中国工程物理研究院材料研究所 | A kind of application method of structure-function integration neutron absorber material |
| CN114453586A (en) * | 2022-03-04 | 2022-05-10 | 中国核动力研究设计院 | Preparation method of tungsten-boron-aluminum composite shielding plate with high tungsten content |
| CN116497250A (en) * | 2023-06-27 | 2023-07-28 | 有研工程技术研究院有限公司 | High-modulus aluminum-based composite foil and preparation method thereof |
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| US5980602A (en) * | 1994-01-19 | 1999-11-09 | Alyn Corporation | Metal matrix composite |
| CN101090788A (en) * | 2004-12-28 | 2007-12-19 | 日本轻金属株式会社 | Method for producing aluminum composite material |
| CN102094132A (en) * | 2010-12-28 | 2011-06-15 | 中国工程物理研究院核物理与化学研究所 | Method for preparing B4C-Al composite material |
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| US5980602A (en) * | 1994-01-19 | 1999-11-09 | Alyn Corporation | Metal matrix composite |
| CN101090788A (en) * | 2004-12-28 | 2007-12-19 | 日本轻金属株式会社 | Method for producing aluminum composite material |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103614584A (en) * | 2013-11-07 | 2014-03-05 | 海龙核材科技（江苏）有限公司 | Preparation method of aluminium matrix composite with high B4C content |
| EP3104995A4 (en) * | 2014-02-13 | 2017-10-18 | Ceradyne Inc. | Method of making a metal matrix composite material |
| CN104308161A (en) * | 2014-10-16 | 2015-01-28 | 中国工程物理研究院材料研究所 | Preparation method of low-cost boron carbide/aluminum composite board |
| CN104308161B (en) * | 2014-10-16 | 2017-02-01 | 中国工程物理研究院材料研究所 | Preparation method of boron carbide/aluminum composite board |
| CN104952500A (en) * | 2015-07-09 | 2015-09-30 | 中国核动力研究设计院 | Uranium-molybdenum alloy dispersion fuel plate manufacturing method |
| CN104952500B (en) * | 2015-07-09 | 2017-05-03 | 中国核动力研究设计院 | Uranium-molybdenum alloy dispersion fuel plate manufacturing method |
| CN108735322A (en) * | 2018-06-04 | 2018-11-02 | 江苏核电有限公司 | A kind of stainless steel boron aluminum composite plate and manufacturing method |
| CN108735318A (en) * | 2018-06-04 | 2018-11-02 | 江苏核电有限公司 | A kind of the stainless steel boron aluminum composite plate and manufacturing method of PWR fuel assemblies storage lattice cell |
| CN108735322B (en) * | 2018-06-04 | 2024-02-09 | 江苏核电有限公司 | Stainless steel boron aluminum composite board and manufacturing method |
| CN108735318B (en) * | 2018-06-04 | 2024-02-09 | 江苏核电有限公司 | Stainless steel boron aluminum composite board for PWR fuel assembly storage cell and manufacturing method |
| CN109825743A (en) * | 2019-03-20 | 2019-05-31 | 中国工程物理研究院材料研究所 | A kind of application method of structure-function integration neutron absorber material |
| CN114453586A (en) * | 2022-03-04 | 2022-05-10 | 中国核动力研究设计院 | Preparation method of tungsten-boron-aluminum composite shielding plate with high tungsten content |
| CN116497250A (en) * | 2023-06-27 | 2023-07-28 | 有研工程技术研究院有限公司 | High-modulus aluminum-based composite foil and preparation method thereof |
| CN116497250B (en) * | 2023-06-27 | 2023-10-27 | 有研工程技术研究院有限公司 | High-modulus aluminum-based composite foil and preparation method thereof |
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Inventor after: Sun Changlong Inventor after: Liu Xiaozhen Inventor after: Liu Yunming Inventor after: Wang Meiling Inventor after: Li Gang Inventor after: Wu Songling Inventor after: Yi Wei Inventor after: Zou Congpei Inventor before: Sun Changlong Inventor before: Liu Yunming Inventor before: Liu Xiaozhen |
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