CN108588500A - A kind of quick semisolid warm area forming method of neutron absorber material - Google Patents
A kind of quick semisolid warm area forming method of neutron absorber material Download PDFInfo
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- CN108588500A CN108588500A CN201810446766.0A CN201810446766A CN108588500A CN 108588500 A CN108588500 A CN 108588500A CN 201810446766 A CN201810446766 A CN 201810446766A CN 108588500 A CN108588500 A CN 108588500A
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- neutron absorber
- semisolid
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- absorber material
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0047—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents
- C22C32/0052—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents only carbides
- C22C32/0057—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents only carbides based on B4C
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
Abstract
The present invention relates to a kind of quick semisolid warm area forming methods of neutron absorber material, belong to semi-solid forming technical field, are suitable for particle（Nanometer, micro-meter scale）Enhance the semi-solid forming slab of metal-base composites.Method is：Boron carbide and aluminium alloy mixed-powder are prepared using ball-milling technology, green compact are obtained by isostatic cool pressing；The techniques such as hot pressed sintering, hot isostatic pressing are carried out in the semi-solid temperature section of the solid, liquid two-phase of aluminium alloy, it obtains ceramic particle even dispersion and is distributed in the high-densit composite material in alloy matrix aluminum, again hot forging pressure, hot extrusion or hot rolling processing are carried out in alloy matrix aluminum deformation temperature section, it is then heat-treated, the aluminum-based boron carbide neutron absorber material of the high-compactness of even tissue is made.The present invention is easy to that nonmetallic materials are added, and preparation time is short, and material density is high, and microstructure is good, and production cost is low.
Description
Technical field
The present invention relates to the quick semi-solid forming methods of aluminum-based boron carbide neutron absorber material.The present invention can be used for preparing high
The particles reiforced metal-base composition of consistency, prepared composite material have higher densification in semi-solid forming
Degree, the equally distributed microstructure of particle dispersion are final to realize material rapid shaping.
Background technology
Aluminum-based boron carbide neutron absorber material belongs to composite material, and this material contains neutron-absorbing B members of good performance
Element can be applied to nuclear power plant reactor irradiated fuel store material, absorbs thermal neutron, prevents criticality accident, its advantage is that corrosion-resistant,
Radiation resistance, boron content are high, service life is long, can improve economy and the safety of spentnuclear fuel storing.And it is further wide to limit it
The bottleneck problem of general application is exactly material preparation difficulty, and molding mode is key difficulties.
Common preparation method is liquid condition shaping technology and formed solid technology, the former generally includes stirring casting method, leaching
Method, spray deposition etc. are oozed, the latter includes mechanical alloying, powder metallurgic method etc..These preparation methods have respective excellent scarce
Point, Al and B when prepared by liquid phase process4C is prone to interfacial reaction, it is difficult to control, generate a large amount of AlB2、Al3BC and Al4C3Etc. crisp
Property object phase, a large amount of interfacial reaction can deteriorate composite materials property.In solid state process preparation process, flow is more, cost compared with
It is high.Therefore, it is still necessary to furtheing investigate the preparation process of new aluminum-based boron carbide material.
Invention content
The present invention proposes that one kind is easy to that nonmetallic materials are added, and preparation time is short, and consistency is high, the good neutron of microstructure
The quick semi-solid forming method of absorbing material.
The technical scheme is that：
A kind of quick semisolid warm area forming method of neutron absorber material, step are：
S1 mixing B4C powder and Al alloy powder；
Uniformly mixed powder is fitted into mantle by S2 is evacuated to vacuum degree better than 10-1Pa；
S3 isostatic cool pressings, pressure are 100 ~ 300MPa, obtain the green compact of aluminum-based boron carbide neutron absorber material；
Green compact is put into metal capsule by S4, high-temperature degassing after sealing, is evacuated to vacuum degree and is better than 10-3Pa；
S5 carries out hot pressed sintering or hip treatment, treatment temperature are located at the semi-solid temperature area of the solid, liquid two-phase of aluminium alloy
Between；
S6 removes metal capsule；
S7 is heated to the deformation temperature section of alloy matrix aluminum, carries out hot forging pressure, hot extrusion or hot rolling processing, is made high-densit
The plank of the semi-solid forming of degree；
S8 carries out homogenizing annealing, ageing treatment.
The aluminium alloy is 1 line aluminium alloy, 2 line aluminium alloys, 3 line aluminium alloys, 4 line aluminium alloys, 5 line aluminium alloys or 6 systems
Aluminium alloy.
B is mixed in the step S14When C powder and Al alloy powder, wherein B4C content is 8 ~ 40%.
It is uniformly mixed using ball mill in the step S1,100 ~ 450rpm/min of drum's speed of rotation.
Aluminium alloy grain size is 1 μm ~ 50 μm in the step S1；B4C grain sizes are 1 μm ~ 30 μm.
The pressure of hot pressed sintering is 50 ~ 330MPa in the step S5, the dwell time is 5 ~ 90min.
The pressure of hot isostatic pressing is 40 ~ 200MPa in the step S5, and the dwell time is 5 ~ 90min.
Material deformation amount is 30% ~ 85% in hot forging pressure process in the step S7.
In the step S7 in hot extrusion technique processing, extrusion ratio is 2 ~ 60, and extrusion speed is 1 ~ 60mm/min.
Material deformation amount is 10% ~ 80% in the processing of hot rolling eight-part essay in the step S7.
The semi-solid forming technology of the present invention, by blank heating to the temperature range between solid, liquid phase, material is in solid-liquid
The state mutually coexisted, as semisolid, are then molded using mold.Semi-solid forming technology has good fluidity, deformation
Property good, high yield rate, dimensional accuracy is easily controllable, reduces production cost, is a kind of tool new material system with broad prospects for development
Standby one of technology and near-net-shape technique.Further, since semi-solid-state metal Al has highly viscous property, it is easy to be added nonmetallic
Material, using this method to prepare ceramic particle reinforced metal base composites can be with simplification of flowsheet, control dimensional accuracy etc.
Advantage.
The present invention has excellent mobility and formability using aluminium alloy in the semi-solid temperature section of solid, liquid phase
Feature is easy to that nonmetallic materials are added, can shorten preparation time, improve material density, improves microstructure, improve aluminium base
The structural homogenity of boron carbide composite material realizes material rapid shaping, reduces production cost, can also simplify technique stream
Journey, control dimensional accuracy, reduction equipment investment etc..
Description of the drawings
The microscopic structure of Fig. 1 semi-solid forming aluminum-based boron carbide neutron absorber materials
Specific implementation mode：
The present invention can be implemented according to following instance, but be not limited to following instance；Technical term as used in the present invention, is removed
It is non-to have other explanation, generally there is the normally understood meaning of those of ordinary skill in the art；These embodiments are intended merely to lift
Example illustrates the present invention, rather than limits the scope of the invention in any way；Below in an example, that is not described in detail is various
Process and method are conventional methods as known in the art.
It is specific embodiments of the present invention below：
Embodiment 1：
（1）Ball mill mixing：Powder is taken out by weight percentage：B4C：31%, 6061 aluminium alloy 69%.Using ball mill（Rotating speed
260rpm/min）Uniformly mixed powder is fitted into mantle, is evacuated to 10 by uniformly mixing-1Pa；
（2）To step（1）In mantle carry out isostatic cool pressing, pressure 260MPa, pressurize 15min are obtained in aluminum-based boron carbide
The green compact of sub- absorbing material；
（3）Green compact is put into metal capsule, high-temperature degassing after sealing is evacuated to 10-4Pa；
（4）The composite material after vacuum will be exhausted and carry out hot pressed sintering, sintering temperature is 600 DEG C, which closes between 6061 aluminium
The aluminium base of semi-solid forming is made in the semi-solid temperature section of the solid, liquid two-phase of auri body, pressure 300MPa, pressurize 15min
Boron carbide neutron absorber material removes metal capsule；
（5）Hot rolling is carried out to aluminum-based boron carbide composite material, hot-rolled temperature is 470 DEG C, deflection 60%；It is made high-densit
The plank of the semi-solid forming of degree；
（6）Homogenizing annealing, ageing treatment are carried out to the aluminum-based boron carbide neutron absorber material of semi-solid forming.
Embodiment 2：
（1）Ball mill mixing：Powder is taken out by weight percentage：B4C：11%, 1100 aluminium alloy 89%.Using ball mill（Rotating speed
280rpm/min）Uniformly mixed powder is fitted into mantle, is evacuated to 10 by uniformly mixing-1Pa；
（2）To step（1）In mantle carry out isostatic cool pressing, pressure 240MPa, pressurize 15min are obtained in aluminum-based boron carbide
The green compact of sub- absorbing material；
（3）Green compact is put into metal capsule, high-temperature degassing after sealing is evacuated to 2 × 10-4Pa；
（4）The composite material after vacuum will be exhausted and carry out hot pressed sintering, sintering temperature is 640 DEG C, which closes between 1100 aluminium
Semi-solid forming aluminium base carbon is made in the semi-solid temperature section of the solid, liquid two-phase of auri body, pressure 280MPa, pressurize 15min
Change boron neutron absorber material, removes metal capsule；
（5）Heating aluminum-based boron carbide composite material is to 520 DEG C, progress hot extrusion, extrusion ratio 3, extrusion speed 5mm/min,
The plank of the semi-solid forming of high-compactness is made；
（6）Homogenizing annealing, ageing treatment are carried out to the aluminum-based boron carbide neutron absorber material of semi-solid forming.
Embodiment 3：
（1）Ball mill mixing：Powder is taken out by weight percentage：B4C：20%, 2024 aluminium alloy 80%.Using ball mill（Rotating speed
280rpm/min）Uniformly mixed powder is fitted into mantle, is evacuated to 3 × 10 by uniformly mixing-1Pa；
（2）To step（1）In mantle carry out isostatic cool pressing, pressure 220MPa, pressurize 15min are obtained in aluminum-based boron carbide
The green compact of sub- absorbing material；
（3）Green compact is put into metal capsule, high-temperature degassing after sealing is evacuated to 3 × 10-4Pa；
（4）The composite material after vacuum will be exhausted and carry out hot isostatic pressing, sintering temperature is 640 DEG C, which closes between 1100 aluminium
The aluminium base carbon of semi-solid forming is made in the semi-solid temperature section of the solid, liquid two-phase of auri body, pressure 100MPa, pressurize 10min
Change boron neutron absorber material, removes metal capsule；
（5）Aluminum-based boron carbide composite material is heated to the deformation temperature section of alloy matrix aluminum, carries out hot Forging Technology, forging and stamping temperature
Degree is 470 DEG C, deflection 50%；
（6）Homogenizing annealing, ageing treatment are carried out to the aluminum-based boron carbide neutron absorber material of semi-solid forming.
Embodiment 4：
（1）Ball mill mixing：Powder is taken out by weight percentage：B4C：31%, 5083 aluminium alloy 69%.Using ball mill（Rotating speed
240rpm/min）Uniformly mixed powder is fitted into mantle, is evacuated to 2 × 10 by uniformly mixing-1Pa；
（2）To step（1）In mantle carry out isostatic cool pressing, pressure 200MPa, pressurize 10min are obtained in aluminum-based boron carbide
The green compact of sub- absorbing material；
（3）Green compact is put into metal capsule, high-temperature degassing after sealing is evacuated to 2 × 10-4Pa；
（4）The green compact after vacuum will be exhausted and carry out hot isostatic pressing, temperature is 620 DEG C, and the temperature is between 6061 alloy matrix aluminums
The semi-solid temperature section of solid, liquid two-phase, pressure 80MPa, pressurize 30min are made in the aluminum-based boron carbide of semi-solid forming
Sub- absorbing material removes metal capsule；
（5）Aluminum-based boron carbide composite material is heated to 460 DEG C, carries out hot rolling, the half of high-compactness is made in deflection 70%
The plank of formed solid；
（6）Homogenizing annealing, ageing treatment are carried out to the aluminum-based boron carbide neutron absorber material of semi-solid forming.
Claims (10)
1. a kind of quick semisolid warm area forming method of neutron absorber material, step are：
S1 mixing B4C powder and Al alloy powder；
Uniformly mixed powder is fitted into mantle by S2 is evacuated to vacuum degree better than 10-1Pa；
S3 isostatic cool pressings, pressure are 100 ~ 300MPa, obtain the green compact of aluminum-based boron carbide neutron absorber material；
Green compact is put into metal capsule by S4, high-temperature degassing after sealing, is evacuated to vacuum degree and is better than 10-3Pa；
S5 carries out hot pressed sintering or hip treatment, treatment temperature are located at the semi-solid temperature area of the solid, liquid two-phase of aluminium alloy
Between；
S6 removes metal capsule；
S7 is heated to the deformation temperature section of alloy matrix aluminum, carries out hot forging pressure, hot extrusion or hot rolling processing, is made high-densit
The plank of the semi-solid forming of degree；
S8 carries out homogenizing annealing, ageing treatment.
2. the quick semisolid warm area forming method of a kind of neutron absorber material according to claim 1, which is characterized in that institute
The aluminium alloy stated is 1 line aluminium alloy, 2 line aluminium alloys, 3 line aluminium alloys, 4 line aluminium alloys, 5 line aluminium alloys or 6 line aluminium alloys.
3. the quick semisolid warm area forming method of a kind of neutron absorber material according to claim 1, which is characterized in that institute
It states in step S1 and mixes B4When C powder and Al alloy powder, wherein B4C content is 8 ~ 40%.
4. the quick semisolid warm area forming method of a kind of neutron absorber material according to claim 1, which is characterized in that institute
It states in step S1 and is uniformly mixed using ball mill, 100 ~ 450rpm/min of drum's speed of rotation.
5. the quick semisolid warm area forming method of a kind of neutron absorber material according to claim 1, which is characterized in that institute
It is 1 μm ~ 50 μm to state aluminium alloy grain size in step S1；B4C grain sizes are 1 μm ~ 30 μm.
6. the quick semisolid warm area forming method of a kind of neutron absorber material according to claim 1, which is characterized in that institute
The pressure for stating hot pressed sintering in step S5 is 50 ~ 330MPa, the dwell time is 5 ~ 90min.
7. the quick semisolid warm area forming method of a kind of neutron absorber material according to claim 1, which is characterized in that institute
The pressure for stating hot isostatic pressing in step S5 is 40 ~ 200MPa, and the dwell time is 5 ~ 90min.
8. the quick semisolid warm area forming method of a kind of neutron absorber material according to claim 1, which is characterized in that institute
It is 30% ~ 85% to state hot forging in step S7 and press material deformation amount in process.
9. the quick semisolid warm area forming method of a kind of neutron absorber material according to claim 1, which is characterized in that institute
It states in step S7 in hot extrusion technique processing, extrusion ratio is 2 ~ 60, and extrusion speed is 1 ~ 60mm/min.
10. the quick semisolid warm area forming method of a kind of neutron absorber material according to claim 1, which is characterized in that
Material deformation amount is 10% ~ 80% in the processing of hot rolling eight-part essay in the step S7.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109504869A (en) * | 2018-12-12 | 2019-03-22 | 西南交通大学 | A kind of metal-base nanometer composite material and preparation method thereof with bionical multilevel structure |
| CN109702185A (en) * | 2019-01-23 | 2019-05-03 | 宁波合盛专用车辆有限公司 | A kind of aluminum matrix composite press forging and preparation method thereof |
| CN109797308A (en) * | 2019-01-30 | 2019-05-24 | 中广核工程有限公司 | A kind of new oxide dispersion-strengtherning neutron absorber material |
| CN109797309A (en) * | 2019-01-30 | 2019-05-24 | 中广核工程有限公司 | A kind of structure-function integration neutron absorber material High-Temperature Strengthening 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 |
| CN111218587A (en) * | 2020-02-28 | 2020-06-02 | 福建祥鑫股份有限公司 | Aluminum-based composite material and preparation method thereof |
| CN111593218A (en) * | 2020-05-12 | 2020-08-28 | 大连理工大学 | Micro-nano particle reinforced aluminum-based composite material and preparation method thereof |
| CN112176227A (en) * | 2020-10-09 | 2021-01-05 | 福建祥鑫股份有限公司 | Boron aluminum carbide composite material and preparation method thereof |
| CN114227899A (en) * | 2021-12-20 | 2022-03-25 | 中国工程物理研究院材料研究所 | Method for compounding metal hydride ceramic thin-wall tube and stainless steel thin-wall tube |
| CN114351010A (en) * | 2021-12-31 | 2022-04-15 | 清华大学深圳国际研究生院 | Aluminum-based boron carbide composite material and preparation method and application thereof |
| 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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Cited By (17)
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| CN109504869B (en) * | 2018-12-12 | 2020-09-18 | 西南交通大学 | Metal-based nanocomposite material with bionic multilevel structure and preparation method thereof |
| CN109504869A (en) * | 2018-12-12 | 2019-03-22 | 西南交通大学 | A kind of metal-base nanometer composite material and preparation method thereof with bionical multilevel structure |
| CN109702185A (en) * | 2019-01-23 | 2019-05-03 | 宁波合盛专用车辆有限公司 | A kind of aluminum matrix composite press forging and preparation method thereof |
| CN109702185B (en) * | 2019-01-23 | 2021-04-06 | 宁波合盛新材料有限公司 | Aluminum-based composite material forged piece and preparation method thereof |
| CN109797308A (en) * | 2019-01-30 | 2019-05-24 | 中广核工程有限公司 | A kind of new oxide dispersion-strengtherning neutron absorber material |
| CN109797309A (en) * | 2019-01-30 | 2019-05-24 | 中广核工程有限公司 | A kind of structure-function integration neutron absorber material High-Temperature Strengthening 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 |
| CN111218587B (en) * | 2020-02-28 | 2020-12-11 | 福建祥鑫股份有限公司 | Aluminum-based composite material and preparation method thereof |
| CN111218587A (en) * | 2020-02-28 | 2020-06-02 | 福建祥鑫股份有限公司 | Aluminum-based composite material and preparation method thereof |
| CN111593218A (en) * | 2020-05-12 | 2020-08-28 | 大连理工大学 | Micro-nano particle reinforced aluminum-based composite material and preparation method thereof |
| CN112176227A (en) * | 2020-10-09 | 2021-01-05 | 福建祥鑫股份有限公司 | Boron aluminum carbide composite material and preparation method thereof |
| CN112176227B (en) * | 2020-10-09 | 2021-08-13 | 福建祥鑫股份有限公司 | Boron aluminum carbide composite material and preparation method thereof |
| CN114227899A (en) * | 2021-12-20 | 2022-03-25 | 中国工程物理研究院材料研究所 | Method for compounding metal hydride ceramic thin-wall tube and stainless steel thin-wall tube |
| CN114351010A (en) * | 2021-12-31 | 2022-04-15 | 清华大学深圳国际研究生院 | Aluminum-based boron carbide composite material and preparation method and application thereof |
| CN114351010B (en) * | 2021-12-31 | 2023-01-10 | 清华大学深圳国际研究生院 | Aluminum-based boron carbide composite material and preparation method and application thereof |
| 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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Application publication date: 20180928 |
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