CN106480341A - A kind of method of utilization large plastometric set technique preparation richness Al intermetallic reinforcement prefabricated section - Google Patents
A kind of method of utilization large plastometric set technique preparation richness Al intermetallic reinforcement prefabricated section Download PDFInfo
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/20—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by extruding
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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
- C22C1/0408—Light metal alloys
- C22C1/0416—Aluminium-based alloys
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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
- C22C1/045—Alloys based on refractory metals
- C22C1/0458—Alloys based on titanium, zirconium or hafnium
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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
- C22C1/047—Making non-ferrous alloys by powder metallurgy comprising intermetallic compounds
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C16/00—Alloys based on zirconium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/20—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by extruding
- B22F2003/208—Warm or hot extruding
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Abstract
A kind of method of the rich Al intermetallic reinforcement prefabricated section of present invention utilization large plastometric set technique preparation, belongs to aluminum matrix composite preparing technical field；Technical problem to be solved is to affect itself and melt wetting out problems by solving the composite powder surface film oxide after ball milling, there is provided one kind by big plastic deformation shape mode, the composite powder prefabricated section making precompressed in bulk after ball milling is through strong deformation, so that composite powder surface film oxide is crushed, improve composite powder and melt wettability and reactivity；Prepare aluminum matrix composite composite powder reinforcement prefabricated section with paddling process to be more easy to disperse after adding aluminum melt, strengthen granule and aluminum melt wettability is good, the composite of preparation has good interface and mechanical property under conventional smelting temperature.
Description
Technical field
A kind of method of the rich Al intermetallic reinforcement prefabricated section of present invention utilization large plastometric set technique preparation, belongs to
In aluminum matrix composite preparing technical field.
Background technology
Aluminum matrix composite is in automobile production mainly for the manufacture of piston and other auto parts and components.Recent year
Most researchers are substantially all using situ Particles reinforced aluminum matrix composites, and in-situ Al-base composition has strengthening
Xiang Duo, design are wide, crystal grain is tiny, good combination property, reinforcement are firmly combined with basal body interface and bond strength high, cost phase
To relatively low and the advantages such as near-net-shape casting can be carried out.Representational composite has TiB2And Al2O3Particle reinforced aluminium-based composite wood
Material.In addition two-phase or multiphase particle strengthen the attention that alumina-base material has caused people, are such as closed using stirring casting and reaction in-situ
Become the method combining, be prepared for（TiB2+SiC）/ ZL109 composite, compensate for the deficiency of single SiC particulate strengthening,
The hardness of composite improves 34.8% than matrix.In-situ reactive synthesis（TiB2+Al3Ti）/ Al6Si4Cu composite, its tension
Intensity, hardness improve 20%, 29.6% than AlSi6Cu4 alloy respectively.Method using salt-mixture action-reaction synthesizes Al3Ti/Al
Composite, result shows, Al3The vibration absorption ability of Ti/Al composite is higher than aluminium base, and with enhancing thing Al3The body of Ti
Fraction is proportional.The stirring melt in situ reaction particle enhanced aluminum-based composite material technology of preparing of Yang Bin et al. exploitation
（It is published in aeronautical material journal, 1999,19（4））Aluminium powder and the titanium valve of 50 μm of ＜ and the boron amorphous of 1 μm of ＜ with 75 μm of ＜
After powder or the mixing of 75 μm of graphite powders of ＜ briquetting add in commercial-purity aluminium and prepare reaction in-situ, volume fraction be 3% TiB2/ Al and
TiC/Al composite；But these technology are prepared melt temperature during composite and need to be heated to 800-1000 DEG C.
Patent：A kind of richness Al intermetallic reinforced aluminum matrix composites preparation method（CN201310730267.1）,
Composite metal powder after ball milling is directly added into or is converted into after intermetallic compound particle and is directly added into aluminium alloy by the method
In melt, can obtain that interface is good, the aluminum matrix composite of good mechanical performance.Due to metal dust, after ball milling, surface is not
Can there is oxide-film, the wettability between impact composite powder and melt, patent with avoiding：A kind of intermetallic compound particle
The preparation method of Al3-M reinforced aluminum matrix composites（ZL201310730115.1）Propose one kind and sub-micro is prepared using ball-milling technology
The rich Al intermetallic Al of meter level3M particle enhanced aluminum-based composite material preparation method, the method is improved in advance using substep
In aluminum melt magnesium density add intermetallic compound particle method extraordinary solve intermetallic compound strengthen granule with
The nonwettable problem of molten metal, under conventional smelting temperature, the engine housing composite of preparation has good interface and power
Learn performance.
Content of the invention
The present invention overcomes the deficiencies in the prior art, and technical problem to be solved is to solve the composite powder table after ball milling
Surface oxidation film affects itself and melt wetting out problems, provides one kind by big plastic deformation shape mode, makes precompressed in bulk after ball milling
Composite powder prefabricated section through strong deformation, so that composite powder surface film oxide is crushed, improve composite powder and melt moistening
Property and reactivity.
For solving above-mentioned technical problem, the technical solution adopted in the present invention is：One kind utilizes large plastometric set technique system
The method of standby richness Al intermetallic reinforcement prefabricated section, comprises the following steps：
（1）Aluminium powder or alloy powder and metal M powder are pressed atomic ratio 3:1 preparation composite powder, puts ball mill into and protects in argon atmospher
The lower ball milling of shield, rotational speed of ball-mill 300 ~ 600r/min, ratio of grinding media to material 20-40:1, Ball-milling Time 10h ~ 50h；
（2）By the composite powder after ball milling, on extruder, pre-extrusion becomes block, and squeeze pressure is 50 ~ 100MPa；
（3）Will be through step（2）The pre-extrusion block of preparation is placed in vacuum drying oven or the electric furnace of argon gas atmosphere protection and preheats, preheating
Temperature is 300 ~ 400 DEG C, preheating time 0.5h ~ 2h；
（4）By step（3）Pre-extrusion block after preheating adopts large plastometric set technique, so that composite metal powder is experienced in a mold
Strong deformation, obtains rich Al intermetallic reinforcement prefabricated section.
Step（1）In metal powder M be one of titanium, zirconium, ferrum, scandium or erbium.
Step（4）The large plastometric set technique being adopted is equal channel angular extrusion technique, high-pressure rotary extrusion process, repeatedly
Overlapping compression joint technique, cycle extrusion technique.
The rich Al intermetallic reinforcement prefabricated section of described method preparation, when reinforcement prefabricated section is aluminium powder and gold
When belonging to M powder and preparing, prefabricated section is used as the increasing of the composite that matrix is the reinforcement of composite of aluminium base or matrix is alloy
Qiang Ti；When reinforcement prefabricated section is alloy powder and metal M powder prepares, it is identical with alloy powder that prefabricated section is used as matrix composition
Composite reinforcement.
Described rich Al intermetallic reinforcement prefabricated section, prefabricated section is added to system in matrix by stirring casting method
Become aluminum matrix composite.
Step（1）In matrices of composite material alloy powder be same aluminum matrix alloy composition identical alusil alloy powder or
Casting Al-Cu alloy.
The present invention is using big plastic deformation shape technique in order to make the composite powder of precompressed in bulk after ball milling pass through
Strong deformation rear is so as to surface film oxide crushes.The mode of therefore all of big plastic deformation shape technique is suitable for this
Bright, the parameter of various different big plastic deformation shape techniques, it is attained by the present invention in the range of its normal operational factor and wanted
The effect reaching.Such as equal channel angular extrusion deformation technique, preheating temperature is set as that pressure is set in 300- for 300 ~ 400 DEG C
500MPa, you can to reach the effect making composite powder surface film oxide crush.
Compared with prior art the invention has the advantages that.
, by big plastic deformation shape mode, the composite powder prefabricated section making precompressed in bulk after ball milling is through strong for the present invention
Deformation, makes composite powder surface film oxide crush, improves composite powder and melt wettability and reactivity.Prepare aluminum with paddling process
Based composites composite powder reinforcement prefabricated section is more easy to disperse after adding aluminum melt, strengthens granule and aluminum melt wettability
Good, under conventional smelting temperature, the composite of preparation has good interface and mechanical property.
Specific embodiment
Below in conjunction with specific embodiment, the invention will be further described.
Embodiment 1
A kind of method of utilization large plastometric set technique preparation richness Al intermetallic reinforcement prefabricated section, walks including following
Suddenly：
（1）Aluminium powder and metallic titanium powder are pressed atomic ratio 3:1 preparation composite powder, puts ball mill ball milling, ball under argon atmospher protection into
Mill rotating speed 300r/min, ratio of grinding media to material 20:1, Ball-milling Time 50h；
（2）By the composite powder after ball milling, on extruder, pre-extrusion becomes block, and squeeze pressure is 50MPa；
（3）Will be through step（2）The pre-extrusion block of preparation is placed in vacuum drying oven or the electric furnace of argon gas atmosphere protection and preheats, preheating
Temperature be 400 DEG C, preheating time 0.5h；
（4）By step（3）Pre-extrusion block after preheating adopts large plastometric set technique, equal channel angular extrusion, makes composite metal powder
End experiences strong deformation in a mold, obtains rich Al intermetallic reinforcement prefabricated section.
Embodiment 2
A kind of method of utilization large plastometric set technique preparation richness Al intermetallic reinforcement prefabricated section, walks including following
Suddenly：
（1）Aluminium powder and metal zirconium powder are pressed atomic ratio 3:1 preparation composite powder, puts ball mill ball milling, ball under argon atmospher protection into
Mill rotating speed 600r/min, ratio of grinding media to material 40:1, Ball-milling Time 10h；
（2）By the composite powder after ball milling, on extruder, pre-extrusion becomes block, and squeeze pressure is 100MPa；
（3）Will be through step（2）The pre-extrusion block of preparation is placed in vacuum drying oven or the electric furnace of argon gas atmosphere protection and preheats, preheating
Temperature be 300 DEG C, preheating time 2h；
（4）By step（3）Pre-extrusion block after preheating adopts large plastometric set technique, and high-pressure rotary extrudes, and makes composite metal powder
End experiences strong deformation in a mold, obtains rich Al intermetallic reinforcement prefabricated section.
Embodiment 3
A kind of method of utilization large plastometric set technique preparation richness Al intermetallic reinforcement prefabricated section, walks including following
Suddenly：
（1）Alusil alloy powder and metal scandium powder press atomic ratio 3:1 preparation composite powder, puts ball mill ball under argon atmospher protection into
Mill, rotational speed of ball-mill 400r/min, ratio of grinding media to material 30:1, Ball-milling Time 20h；
（2）By the composite powder after ball milling, on extruder, pre-extrusion becomes block, and squeeze pressure is 80MPa；
（3）Will be through step（2）The pre-extrusion block of preparation is placed in vacuum drying oven or the electric furnace of argon gas atmosphere protection and preheats, preheating
Temperature be 350 DEG C, preheating time 1h；
（4）By step（3）Pre-extrusion block after preheating adopts large plastometric set technique, equal channel angular extrusion, makes composite metal powder
End experiences strong deformation in a mold, obtains rich Al intermetallic reinforcement prefabricated section.
Embodiment 4
A kind of method of utilization large plastometric set technique preparation richness Al intermetallic reinforcement prefabricated section, walks including following
Suddenly：
（1）Casting Al-Cu alloy powder and metal iron powder are pressed atomic ratio 3:1 preparation composite powder, puts ball mill into and protects in argon atmospher
The lower ball milling of shield, rotational speed of ball-mill 500r/min, ratio of grinding media to material 35:1, Ball-milling Time 40h；
（2）By the composite powder after ball milling, on extruder, pre-extrusion becomes block, and squeeze pressure is 75MPa；
（3）Will be through step（2）The pre-extrusion block of preparation is placed in vacuum drying oven or the electric furnace of argon gas atmosphere protection and preheats, preheating
Temperature be 350 DEG C, preheating time 1h；
（4）By step（3）Pre-extrusion block after preheating adopts large plastometric set technique, and high-pressure rotary extrudes, and makes composite metal powder
End experiences strong deformation in a mold, obtains rich Al intermetallic reinforcement prefabricated section.
The present invention can be summarized without prejudice to the concrete form of the spirit or essential characteristics of the present invention with others.Therefore, no
By from the point of view of which point, the embodiment above of the present invention all can only be considered that the description of the invention can not limit invention,
Claims indicate the scope of the present invention, and the scope of the present invention is not pointed out in above-mentioned explanation, therefore, with the present invention
The suitable implication and scope of claims in any change, be all considered as being included within the scope of the claims.
Claims (4)
1. a kind of method of utilization large plastometric set technique preparation richness Al intermetallic reinforcement prefabricated section, its feature exists
In comprising the following steps：
（1）Aluminium powder or alloy powder and metal M powder are pressed atomic ratio 3:1 preparation composite powder, puts ball mill into and protects in argon atmospher
The lower ball milling of shield, rotational speed of ball-mill 300 ~ 600r/min, ratio of grinding media to material 20-40:1, Ball-milling Time 10h ~ 50h；
（2）By the composite powder after ball milling, on extruder, pre-extrusion becomes block, and squeeze pressure is 50 ~ 100MPa；
（3）Will be through step（2）The pre-extrusion block of preparation is placed in vacuum drying oven or the electric furnace of argon gas atmosphere protection and preheats, preheating
Temperature is 300 ~ 400 DEG C, preheating time 0.5h ~ 2h；
（4）By step（3）Pre-extrusion block after preheating adopts large plastometric set technique, so that composite metal powder is experienced in a mold
Strong deformation, obtains rich Al intermetallic reinforcement prefabricated section；
Step（1）In metal powder M be one of titanium, zirconium, ferrum, scandium or erbium.
2. according to claim 1 a kind of prefabricated using the rich Al intermetallic reinforcement of large plastometric set technique preparation
The method of block is it is characterised in that step（4）The large plastometric set technique being adopted is equal channel angular extrusion technique, high-pressure rotary
Extrusion process, repeatedly overlapping compression joint technique, cycle extrusion technique.
3. the rich Al intermetallic reinforcement prefabricated section of method preparation according to claim 1 and 2, its feature exists
In when reinforcement prefabricated section is aluminium powder and metal M powder prepares, prefabricated section is used as the reinforcement of the composite that matrix is aluminium base
Or the reinforcement of the composite that matrix is alloy；When reinforcement prefabricated section is alloy powder and metal M powder prepares, prefabricated section
Reinforcement as the composite with alloy powder identical for the matrix composition.
4. according to claim 3 richness Al intermetallic reinforcement prefabricated section it is characterised in that：Prefabricated section passes through to stir
Mix casting and be added in matrix and make aluminum matrix composite.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109207781A (en) * | 2018-09-17 | 2019-01-15 | 南昌大学 | A kind of pressing method improving 7075 aluminium alloys |
| CN110142404A (en) * | 2019-05-16 | 2019-08-20 | 西南交通大学 | The preparation method of nanometer copper rod |
| CN111719060A (en) * | 2020-05-19 | 2020-09-29 | 山东源航超轻材料研究院有限公司 | Surface modification of reinforcement for Mg-Li-based composite material and preparation method of prefabricated body of reinforcement |
| CN111730059A (en) * | 2020-05-19 | 2020-10-02 | 山东源航超轻材料研究院有限公司 | High-volume-fraction ultrafine particle reinforced Mg-Li-based composite material and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109207781A (en) * | 2018-09-17 | 2019-01-15 | 南昌大学 | A kind of pressing method improving 7075 aluminium alloys |
| CN110142404A (en) * | 2019-05-16 | 2019-08-20 | 西南交通大学 | The preparation method of nanometer copper rod |
| CN111719060A (en) * | 2020-05-19 | 2020-09-29 | 山东源航超轻材料研究院有限公司 | Surface modification of reinforcement for Mg-Li-based composite material and preparation method of prefabricated body of reinforcement |
| CN111730059A (en) * | 2020-05-19 | 2020-10-02 | 山东源航超轻材料研究院有限公司 | High-volume-fraction ultrafine particle reinforced Mg-Li-based composite material and preparation method thereof |
| CN111719060B (en) * | 2020-05-19 | 2021-08-27 | 山东源航超轻材料研究院有限公司 | Surface modification of reinforcement for Mg-Li-based composite material and preparation method of prefabricated body of reinforcement |
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