CN103981391A - Aluminum-base composite material reinforced by both magnesium borate crystal whisker and silicon carbide particles and preparation method thereof - Google Patents
Aluminum-base composite material reinforced by both magnesium borate crystal whisker and silicon carbide particles and preparation method thereof Download PDFInfo
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Abstract
The invention relates to the technical field of new materials, and concretely relates to a hybrid double-phase aluminum-base composite material reinforced by both magnesium borate crystal whisker and silicon carbide particles and a preparation method thereof. The aluminum-base composite material reinforced by both magnesium borate crystal whisker and silicon carbide particles comprises, in volume percentage, 3% of magnesium borate crystal whisker, 3% of silicon carbide particles comprises, and the balance aluminium alloy. The preparation method comprises: preparing a hybrid reinforced body; preparing a hybrid aluminium-base composite material ingot casting by employing a stirring casting method; and performing hot extrusion on ingots. The beneficial effects comprise that the hybrid double-phase aluminum-base composite material reinforced by both magnesium borate crystal whisker and silicon carbide particles is prepared by employing the reasonable design technology, the problem of severe settlement phenomenon of silicon carbide particles in the preparation process is improved, the dispersity of the whisker in the composite material is improved, the whisker and the particles give play to cooperative enhancement effect in the composite material, and the mechanical properties of the aluminium-base composite material is effectively improved.
Description
Technical field
The present invention relates to new material technology field, specifically relate to a kind of magnesium borate crystal whisker and carborundum particle and mix two-phase reinforced aluminum matrix composites and preparation method.
Background technology
More to the matrix material research of single carborundum particle and the enhancing of single magnesium borate crystal whisker at present.But the aluminum matrix composite research that magnesium borate crystal whisker and carborundum particle is mixed to enhancing there is not yet report.Preparation technology and the performance of the magnesium base composite material that Jin Pei roc seminar strengthens magnesium borate crystal whisker have been carried out comprehensive research, find that the introducing of magnesium borate crystal whisker effectively raises mechanical property and the friction and wear behavior of magnesium base composite material, stability under high temperature improves, but the matrix material that this research makes is high-volume fractional, the technique adopting is vacuum pressure THROUGH METHOD, and matrix is magnesium alloy.This seminar utilizes stirring casting method to prepare the aluminum matrix composite that low volume fraction magnesium borate crystal whisker strengthens simultaneously, the friction and wear behavior of matrix material is compared matrix alloy and is improved, but whisker is more serious at the middle agglomeration of matrix alloy, therefore solving the dispersion problem of whisker in matrix alloy, is the key that improves low volume fraction magnesium borate crystal whisker reinforced aluminium base composite material mechanical property.
Improve though Xiao Daihong and Huang Baiyun research shows to utilize its hardness of the relative matrix alloy of aluminum matrix composite that carborundum particle prepared by stirring casting method strengthens and wear resisting property to have significantly, tensile property obviously reduces.This is mainly because carborundum particle exists sharp-pointed corner, hot mispairing between particle and matrix is larger simultaneously, therefore can produce huge internal stress in sharp-pointed forward position, corner, cause serious stress concentration, in the time that matrix material is subject to external force, wedge angle position very easily scratches matrix, thereby produces tiny crack, tiny crack constantly germinates diffusion, thereby the tensile property of matrix material is sharply reduced.While utilizing stirring casting method to prepare matrix material there is sedimentation in particle simultaneously, causes Local enrichment, also can cause disadvantageous effect to the performance that improves matrix material.
Lv Yingbin etc. utilize mixing salt reaction in－situ method to prepare SiC, TiB
2the aluminum matrix composite that two-phase miscellaneous granules strengthens, compares with the matrix material that single particle strengthens, and due to the synergistic enhancing effect that mixes of particle, makes the Young's modulus of hybrid composite and tensile property have obvious lifting.And the sedimentation phenomenon of silicon-carbide particle has obtained obvious inhibition, make the dispersion of particle in matrix material be tending towards even.Byung-Chul Ko and Yeon-Chul Yoo utilize powder metallurgic method to prepare the SiCw of a series of different proportionings and the aluminum matrix composite that SiCp strengthens, mechanical property research to matrix material shows, in the time that the proportioning of SiCw and SiCp is 1:1, matrix material can obtain the highest intensity.
Summary of the invention
The technical problem to be solved in the present invention is the deficiency existing for prior art, and a kind of magnesium borate crystal whisker and carborundum particle reinforced aluminum matrix composites and preparation method are provided.
Preparation method of the present invention is: the preparation of Combination reinforcement; Stirring casting method preparation mixes type aluminum matrix composite ingot casting; Hot extrusion ingot blank.
Magnesium borate crystal whisker of the present invention and carborundum particle reinforced aluminum matrix composites volume fraction proportioning:
Magnesium borate crystal whisker 3% (volume fraction);
Carborundum particle 3% (volume fraction);
Surplus is aluminium alloy;
Aluminium alloy is: 6000 series alloys, and alloy designations is 6061, chemical composition (mass percent wt%): Mg-0.86%, Si-0.65%, Cu-0.25%, Mn-0.15%, Zn-0.25%, Cr-0.15%, Ti-0.15%, Fe-0.7% Al-surplus.
Preparation method of the present invention comprises the steps:
(1) preparation process of mixed type reinforcement
(1.1) calculating of matrix and reinforcement and weighing;
First 6061 aluminium ingots are weighed, then according to the Mass Calculation of aluminium ingot and weigh magnesium borate crystal whisker and carborundum particle, make the volume fraction of two kinds of reinforcements respectively account for 3%;
(1.2) the mixed powder of reinforcement grinds;
By admixed together to load weighted magnesium borate crystal whisker and carborundum particle, hand lapping 30 minutes, tentatively mixes two kinds of reinforcements, and makes macroscopic view reunion carry out preliminary dispersion to whisker and particle together;
(1.3) ultrasonic dispersion;
To mix in the large capacity beaker of latter two reinforcement powder transfer to, and add appropriate alcohol, be that alcohol fully floods reinforcement powder, beaker put into ultrasonic vessel and carry out ultrasonic dispersion 40 minutes;
(1.4) dry
Mixing reinforcement powder after ultrasonic is put into a vertical drying oven, 80 DEG C of homo(io)thermism, horizontal blast, dries 24 hours powder;
(2) stirring casting method is prepared as cast condition matrix material ingot casting step
(2.1) melting aluminum alloy;
Will be in advance load weighted 6061 aluminium alloy cast ingots put into a Steel Crucible, be heated to 750 DEG C with medium-frequency induction furnace, after aluminium alloy melts completely, medium-frequency induction furnace power is turned down, and temperature of aluminum liquid is controlled to 640 DEG C, make aluminium liquid keep semi-solid state;
(2.2) mechanical stirring;
Agitator is inserted in aluminium liquid, make it occupy crucible center, turn on agitator, make its rotating speed be controlled at 350r/min, now produce a whirlpool on aluminium liquid surface, mixing reinforcement powder is joined in whirlpool slowly, it is rolled in aluminium liquid with whirlpool, after reinforcement powder adds completely, then continue to stir 20 minutes;
(2.3) supersound process;
One power ultrasonic producer is inserted in aluminium liquid, medium-frequency induction furnace power is tuned up simultaneously, again temperature is elevated to 750 DEG C, open ultrasonic wave, continue ultrasonic 10 minutes;
(2.4) casting
After ultrasonic, close induction furnace, execute Composite Melt and slightly do coolingly, be then cast to one in advance in preheated graphite jig, mold preheating temperature is 300 DEG C, obtains as cast condition matrix material ingot casting after cooling;
(3) hot extrusion ingot blank step
Hot extrusion is carried out on the horizontal light alloy extrusion machine of 200t section bar; Lubricated mould before extruding, heating ingot blank temperature to 400～450 DEG C scope, extrusion mould is heated to 400 DEG C; The ingot blank heating is pushed to container, after insulation 40min, start extruding, extrusion ratio is 10:1, and extruding rate is 0.6m/min, and container diameter is φ 90mm, and extrusion axis, under the effect of main plunger, forces ingot blank in container to flow out nib; Be processed into bar by above hot extrusion process, preparation completes.
A kind of magnesium borate crystal whisker of the present invention and carborundum particle reinforced aluminum matrix composites and preparation method have following beneficial effect compared with prior art: a kind of magnesium borate crystal whisker of the present invention and carborundum particle enhancing aluminum-base composite material and preparation method carry out improved preparation technology for enhancement method in aluminum matrix composite.Prepare magnesium borate crystal whisker and carborundum particle by rational design technology and mixed the aluminum matrix composite that two-phase strengthens.Improved the serious problem of carborundum particle sedimentation phenomenon in preparation process, improved the dispersiveness of whisker in matrix material, whisker and particle have played synergistic enhancing effect in matrix material, have effectively improved the mechanical property of aluminum matrix composite.
Due to magnesium borate crystal whisker and aluminum substrate wettability bad, in the aluminium liquid of melting, be difficult for disperseing, agglomeration is serious, and carborundum particle sedimentation phenomenon in aluminium liquid is serious simultaneously, can cause Local enrichment, thereby cause the Properties of Aluminum Matrix Composites of single enhancing not ideal enough.The present invention is by rational technological design, adopt whisker and carborundum particle two-phase to mix enhancement method, effectively improve the dispersiveness of whisker in aluminum substrate, delay the settling velocity of carborundum particle in aluminium liquid in preparation process, eliminate the enrichment phenomenon of carborundum particle, effectively improved the mechanical property of matrix material.The present invention adopts stirring casting method to prepare magnesium borate crystal whisker and carborundum particle mixes the aluminum matrix composite that two-phase strengthens, the reunion that the characteristic (particle and aluminum substrate have good wettability) of easily disperseing in aluminium liquid by particle in mechanical stirring castingprocesses is broken up whisker, the introducing of whisker has simultaneously increased the dynamic viscosity of aluminum melt, thereby has delayed the settling velocity of particle.Pass through phenetic analysis, find carborundum particle and whisker favorable dispersity in matrix alloy, compare the aluminum matrix composite that single whisker strengthens, in hybrid composite, whisker has better dispersiveness, and the sedimentation phenomenon of carborundum particle has obtained effective inhibition, in matrix material, almost do not find particle rich region.It is more even that interaction between particle and whisker disperses them in matrix, effectively raises the mechanical property of matrix material.
Embodiment
Below in conjunction with embodiment, a kind of magnesium borate crystal whisker of the present invention and carborundum particle reinforced aluminum matrix composites and preparation method's technical scheme are further described.
Embodiment 1.
The proportioning of a kind of magnesium borate crystal whisker and carborundum particle reinforced aluminum matrix composites is: the volume fraction of magnesium borate crystal whisker and two kinds of reinforcements of carborundum particle respectively accounts for 3%, and surplus is aluminium alloy; Wherein aluminium alloy is: 6000 series alloys, and alloy designations is 6061, mass percent wt% is: Mg-0.86%, Si-0.65%, Cu-0.25%, Mn-0.15%, Zn-0.25%, Cr-0.15%, Ti-0.15%, Fe-0.7% Al-surplus.
The preparation side of a kind of magnesium borate crystal whisker and carborundum particle reinforced aluminum matrix composites comprises the steps:
(1) preparation process of mixed type reinforcement:
(1.1) calculating of matrix and reinforcement and weighing
First 6061 aluminium ingots are weighed, then according to the Mass Calculation of aluminium ingot and weigh magnesium borate crystal whisker and carborundum particle, make the volume fraction of two kinds of reinforcements respectively account for 3%;
(1.2) the mixed powder of reinforcement grinds
By admixed together to load weighted magnesium borate crystal whisker and carborundum particle, hand lapping 30 minutes, tentatively mixes two kinds of reinforcements, and makes macroscopic view reunion carry out preliminary dispersion to whisker and particle together;
(1.3) ultrasonic dispersion
To mix in the large capacity beaker of latter two reinforcement powder transfer to, and add appropriate alcohol, be that alcohol fully floods reinforcement powder, beaker put into ultrasonic vessel and carry out ultrasonic dispersion 40 minutes;
(1.4) dry
Mixing reinforcement powder after ultrasonic is put into a vertical drying oven, 80 DEG C of homo(io)thermism, horizontal blast, dries 24 hours powder;
(2) stirring casting method is prepared as cast condition matrix material ingot casting step
(2.1) melting aluminum alloy;
Will be in advance load weighted 6061 aluminium alloy cast ingots put into a Steel Crucible, be heated to 750 DEG C with medium-frequency induction furnace, after aluminium alloy melts completely, medium-frequency induction furnace power is turned down, and temperature of aluminum liquid is controlled to 640 DEG C, make aluminium liquid keep semi-solid state;
(2.2) mechanical stirring;
Agitator is inserted in aluminium liquid, make it occupy crucible center, turn on agitator, make its rotating speed be controlled at 350r/min, now produce a whirlpool on aluminium liquid surface, mixing reinforcement powder is joined in whirlpool slowly, it is rolled in aluminium liquid with whirlpool, after reinforcement powder adds completely, then continue to stir 20 minutes;
(2.3) supersound process;
One power ultrasonic producer is inserted in aluminium liquid, medium-frequency induction furnace power is tuned up simultaneously, again temperature is elevated to 750 DEG C, open ultrasonic wave, continue ultrasonic 10 minutes;
(2.4) casting
After ultrasonic, close induction furnace, execute Composite Melt and slightly do coolingly, be then cast to one in advance in preheated graphite jig, mold preheating temperature is 300 DEG C, obtains as cast condition matrix material ingot casting after cooling;
(3) hot extrusion ingot blank step
Hot extrusion is carried out on the horizontal light alloy extrusion machine of 200t section bar; Lubricated mould before extruding, heating ingot blank temperature to 400 DEG C, extrusion mould is heated to 400 DEG C; The ingot blank heating is pushed to container, after insulation 40min, start extruding, extrusion ratio is 10:1, and extruding rate is 0.6m/min, and container diameter is φ 90mm, and extrusion axis, under the effect of main plunger, forces ingot blank in container to flow out nib; Be processed into bar by above hot extrusion process, preparation completes.
The aluminium alloy fundamental property using in the present invention is (under room temperature):
Young's modulus: 69 GPa
Tensile strength: 124 MPa
Proof strength of non-proportional: 116 MPa
Elongation: 25.0%
The magnesium borate crystal whisker fundamental property using in the present invention is:
Mean length: 10 ~ 50 μ m
Mean diameter: 0.2 ~ 6 μ m
Density: 2.91 g/cm
3
Tensile strength: 3.92 GPa
Young's modulus: 264.6 GPa
Carborundum particle fundamental property used in the present invention:
Mean diameter: 10 μ m
Density: 3.2 g/cm
3
Young's modulus: 450 GPa
Thermal expansivity: 8.0 × 10
-6/ DEG C
The performance that mixes type aluminum matrix composite (under room temperature) of preparing in the present invention:
Tensile strength: 245 Mpa
Young's modulus: 117.3 GPa
Density: 2.71～2.73g/cm
3
Elongation: 10.2%
That in the present invention, prepares mixes the performance of type aluminum matrix composite at 150 DEG C of temperature:
Tensile strength: 196 MPa
Proof strength of non-proportional: 182 MPa
Elongation after fracture: 12.3%
That in the present invention, prepares mixes the performance of type aluminum matrix composite at 250 DEG C of temperature:
Tensile strength: 132 MPa
Proof strength of non-proportional: 129 MPa
Elongation after fracture: 15.4%.
Embodiment 2.
It is identical with embodiment 1 that magnesium borate crystal whisker of the present invention and carborundum particle mix two-phase reinforced aluminum matrix composites proportioning.The preparation side that magnesium borate crystal whisker and carborundum particle mix two-phase reinforced aluminum matrix composites comprises the steps:
(1) preparation process of mixed type reinforcement:
(1.1) calculating of matrix and reinforcement and weighing
First 6061 aluminium ingots are weighed, then according to the Mass Calculation of aluminium ingot and weigh magnesium borate crystal whisker and carborundum particle, make the volume fraction of two kinds of reinforcements respectively account for 3%;
(1.2) the mixed powder of reinforcement grinds
By admixed together to load weighted magnesium borate crystal whisker and carborundum particle, hand lapping 30 minutes, tentatively mixes two kinds of reinforcements, and makes macroscopic view reunion carry out preliminary dispersion to whisker and particle together;
(1.3) ultrasonic dispersion
To mix in the large capacity beaker of latter two reinforcement powder transfer to, and add appropriate alcohol, be that alcohol fully floods reinforcement powder, beaker put into ultrasonic vessel and carry out ultrasonic dispersion 40 minutes;
(1.4) dry
Mixing reinforcement powder after ultrasonic is put into a vertical drying oven, 80 DEG C of homo(io)thermism, horizontal blast, dries 24 hours powder;
(2) stirring casting method is prepared as cast condition matrix material ingot casting step
(2.1) melting aluminum alloy;
Will be in advance load weighted 6061 aluminium alloy cast ingots put into a Steel Crucible, be heated to 750 DEG C with medium-frequency induction furnace, after aluminium alloy melts completely, medium-frequency induction furnace power is turned down, and temperature of aluminum liquid is controlled to 640 DEG C, make aluminium liquid keep semi-solid state;
(2.2) mechanical stirring;
Agitator is inserted in aluminium liquid, make it occupy crucible center, turn on agitator, make its rotating speed be controlled at 350r/min, now produce a whirlpool on aluminium liquid surface, mixing reinforcement powder is joined in whirlpool slowly, it is rolled in aluminium liquid with whirlpool, after reinforcement powder adds completely, then continue to stir 20 minutes;
(2.3) supersound process;
One power ultrasonic producer is inserted in aluminium liquid, medium-frequency induction furnace power is tuned up simultaneously, again temperature is elevated to 750 DEG C, open ultrasonic wave, continue ultrasonic 10 minutes;
(2.4) casting
After ultrasonic, close induction furnace, execute Composite Melt and slightly do coolingly, be then cast to one in advance in preheated graphite jig, mold preheating temperature is 300 DEG C, obtains as cast condition matrix material ingot casting after cooling;
(3) hot extrusion ingot blank step
Hot extrusion is carried out on the horizontal light alloy extrusion machine of 200t section bar; Lubricated mould before extruding, heating ingot blank temperature to 425 DEG C, extrusion mould is heated to 400 DEG C; The ingot blank heating is pushed to container, after insulation 40min, start extruding, extrusion ratio is 10:1, and extruding rate is 0.6m/min, and container diameter is φ 90mm, and extrusion axis, under the effect of main plunger, forces ingot blank in container to flow out nib; Be processed into bar by above hot extrusion process, preparation completes.
Embodiment 3.
It is identical with embodiment 1 that magnesium borate crystal whisker of the present invention and carborundum particle mix two-phase reinforced aluminum matrix composites proportioning.The preparation side that magnesium borate crystal whisker and carborundum particle mix two-phase reinforced aluminum matrix composites comprises the steps:
(1) preparation process of mixed type reinforcement:
(1.1) calculating of matrix and reinforcement and weighing
First 6061 aluminium ingots are weighed, then according to the Mass Calculation of aluminium ingot and weigh magnesium borate crystal whisker and carborundum particle, make the volume fraction of two kinds of reinforcements respectively account for 3%;
(1.2) the mixed powder of reinforcement grinds
By admixed together to load weighted magnesium borate crystal whisker and carborundum particle, hand lapping 30 minutes, tentatively mixes two kinds of reinforcements, and makes macroscopic view reunion carry out preliminary dispersion to whisker and particle together;
(1.3) ultrasonic dispersion
To mix in the large capacity beaker of latter two reinforcement powder transfer to, and add appropriate alcohol, be that alcohol fully floods reinforcement powder, beaker put into ultrasonic vessel and carry out ultrasonic dispersion 40 minutes;
(1.4) dry
Mixing reinforcement powder after ultrasonic is put into a vertical drying oven, 80 DEG C of homo(io)thermism, horizontal blast, dries 24 hours powder;
(2) stirring casting method is prepared as cast condition matrix material ingot casting step
(2.1) melting aluminum alloy;
Will be in advance load weighted 6061 aluminium alloy cast ingots put into a Steel Crucible, be heated to 750 DEG C with medium-frequency induction furnace, after aluminium alloy melts completely, medium-frequency induction furnace power is turned down, and temperature of aluminum liquid is controlled to 640 DEG C, make aluminium liquid keep semi-solid state;
(2.2) mechanical stirring;
Agitator is inserted in aluminium liquid, make it occupy crucible center, turn on agitator, make its rotating speed be controlled at 350r/min, now produce a whirlpool on aluminium liquid surface, mixing reinforcement powder is joined in whirlpool slowly, it is rolled in aluminium liquid with whirlpool, after reinforcement powder adds completely, then continue to stir 20 minutes;
(2.3) supersound process;
One power ultrasonic producer is inserted in aluminium liquid, medium-frequency induction furnace power is tuned up simultaneously, again temperature is elevated to 750 DEG C, open ultrasonic wave, continue ultrasonic 10 minutes;
(2.4) casting
After ultrasonic, close induction furnace, execute Composite Melt and slightly do coolingly, be then cast to one in advance in preheated graphite jig, mold preheating temperature is 300 DEG C, obtains as cast condition matrix material ingot casting after cooling;
(3) hot extrusion ingot blank step
Hot extrusion is carried out on the horizontal light alloy extrusion machine of 200t section bar; Lubricated mould before extruding, heating ingot blank temperature to 450 DEG C, extrusion mould is heated to 400 DEG C; The ingot blank heating is pushed to container, after insulation 40min, start extruding, extrusion ratio is 10:1, and extruding rate is 0.6m/min, and container diameter is φ 90mm, and extrusion axis, under the effect of main plunger, forces ingot blank in container to flow out nib; Be processed into bar by above hot extrusion process, preparation completes.
Claims (2)
1. magnesium borate crystal whisker and a carborundum particle reinforced aluminum matrix composites, is characterized in that: the volume fraction of magnesium borate crystal whisker and two kinds of reinforcements of carborundum particle respectively accounts for 3%, and surplus is aluminium alloy; Wherein aluminium alloy is: 6000 series alloys, and alloy designations is 6061, mass percent wt% is: Mg-0.86%, Si-0.65%, Cu-0.25%, Mn-0.15%, Zn-0.25%, Cr-0.15%, Ti-0.15%, Fe-0.7% Al-surplus.
2. a preparation method for magnesium borate crystal whisker and carborundum particle reinforced aluminum matrix composites, is characterized in that described preparation method comprises the steps:
(1) preparation process of mixed type reinforcement:
(1.1) calculating of matrix and reinforcement and weighing
First 6061 aluminium ingots are weighed, then according to the Mass Calculation of aluminium ingot and weigh magnesium borate crystal whisker and carborundum particle, make the volume fraction of two kinds of reinforcements respectively account for 3%;
(1.2) the mixed powder of reinforcement grinds
By admixed together to load weighted magnesium borate crystal whisker and carborundum particle, hand lapping 30 minutes, tentatively mixes two kinds of reinforcements, and makes macroscopic view reunion carry out preliminary dispersion to whisker and particle together;
(1.3) ultrasonic dispersion
To mix in the large capacity beaker of latter two reinforcement powder transfer to, and add appropriate alcohol, be that alcohol fully floods reinforcement powder, beaker put into ultrasonic vessel and carry out ultrasonic dispersion 40 minutes;
(1.4) dry
Mixing reinforcement powder after ultrasonic is put into a vertical drying oven, 80 DEG C of homo(io)thermism, horizontal blast, dries 24 hours powder;
(2) stirring casting method is prepared as cast condition matrix material ingot casting step
(2.1) melting aluminum alloy;
Will be in advance load weighted 6061 aluminium alloy cast ingots put into a Steel Crucible, be heated to 750 DEG C with medium-frequency induction furnace, after aluminium alloy melts completely, medium-frequency induction furnace power is turned down, and temperature of aluminum liquid is controlled to 640 DEG C, make aluminium liquid keep semi-solid state;
(2.2) mechanical stirring;
Agitator is inserted in aluminium liquid, make it occupy crucible center, turn on agitator, make its rotating speed be controlled at 350r/min, now produce a whirlpool on aluminium liquid surface, mixing reinforcement powder is joined in whirlpool slowly, it is rolled in aluminium liquid with whirlpool, after reinforcement powder adds completely, then continue to stir 20 minutes;
(2.3) supersound process;
One power ultrasonic producer is inserted in aluminium liquid, medium-frequency induction furnace power is tuned up simultaneously, again temperature is elevated to 750 DEG C, open ultrasonic wave, continue ultrasonic 10 minutes;
(2.4) casting
After ultrasonic, close induction furnace, execute Composite Melt and slightly do coolingly, be then cast to one in advance in preheated graphite jig, mold preheating temperature is 300 DEG C, obtains as cast condition matrix material ingot casting after cooling;
(3) hot extrusion ingot blank step
Hot extrusion is carried out on the horizontal light alloy extrusion machine of 200t section bar; Lubricated mould before extruding, heating ingot blank temperature to 400～450 DEG C scope, extrusion mould is heated to 400 DEG C; The ingot blank heating is pushed to container, after insulation 40min, start extruding, extrusion ratio is 10:1, and extruding rate is 0.6m/min, and container diameter is φ 90mm, and extrusion axis, under the effect of main plunger, forces ingot blank in container to flow out nib; Be processed into bar by above hot extrusion process, preparation completes.
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Cited By (5)
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| CN104233018A (en) * | 2014-08-26 | 2014-12-24 | 盐城市鑫洋电热材料有限公司 | Reinforced aluminum alloy and preparation method thereof |
| CN104388734A (en) * | 2014-11-27 | 2015-03-04 | 哈尔滨工业大学 | Preparing and molding devices and preparing and molding methods of nano SiC particle enhanced 7075 aluminum matrix composite material semi-solid slurry |
| CN109396401A (en) * | 2018-10-31 | 2019-03-01 | 宁波华源精特金属制品有限公司 | A kind of automatic pedal |
| CN110863160A (en) * | 2019-11-11 | 2020-03-06 | 中国科学院上海硅酸盐研究所 | SIALON whisker reinforced aluminum matrix composite material and preparation method thereof |
| CN113523005A (en) * | 2021-07-12 | 2021-10-22 | 福建祥鑫股份有限公司 | Extrusion method of low-volume-fraction ceramic particle reinforced aluminum-based composite bar |
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| CN110863160A (en) * | 2019-11-11 | 2020-03-06 | 中国科学院上海硅酸盐研究所 | SIALON whisker reinforced aluminum matrix composite material and preparation method thereof |
| CN113523005A (en) * | 2021-07-12 | 2021-10-22 | 福建祥鑫股份有限公司 | Extrusion method of low-volume-fraction ceramic particle reinforced aluminum-based composite bar |
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