CN107326210A - A kind of extrusion casting method of hybrid particles reinforced aluminium based composites - Google Patents
A kind of extrusion casting method of hybrid particles reinforced aluminium based composites 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
- C22C1/00—Making non-ferrous alloys
- C22C1/10—Alloys containing non-metals
- C22C1/1036—Alloys containing non-metals starting from a melt
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/02—Pressure casting making use of mechanical pressure devices, e.g. cast-forging
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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
- C22C1/10—Alloys containing non-metals
- C22C1/1036—Alloys containing non-metals starting from a melt
- C22C1/1073—Infiltration or casting under mechanical pressure, e.g. squeeze casting
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C32/0089—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 other, not previously mentioned inorganic compounds as the main non-metallic constituent, e.g. sulfides, glass
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- 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
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Abstract
The present invention relates to a kind of extrusion casting method of hybrid particles reinforced aluminium based composites, it is the problem of there is tensile strength and low hardness for aluminum matrix composite, using aluminium alloy as matrix material, with aluminum bronze iron beryllium quasi-crystalline substance, zirconium carbonate is reinforcing agent, using scandium bearing master alloy as alterant, through in vacuum melting furnace melting, mechanical agitation, argon gas bottom blowing is protected, extruding and heat treatment, hybrid particles reinforced aluminium based composites are made, this preparation method technique is advanced, process is tight, data are accurately full and accurate, the mechanical property of aluminum matrix composite is greatly improved, tensile strength reaches 409MPa, hardness reaches 150.2HV, elongation is up to 4.7%, it is the extrusion casting method of advanced hybrid particles reinforced aluminium based composites.
Description
Technical field
The present invention relates to a kind of extrusion casting method of hybrid particles reinforced aluminium based composites, belong to metal-based compound material
Expect the technical field prepared.
Background technology
Alusil alloy has good casting character, and corrosion resistance and good, the coefficient of expansion is low, is kind in cast aluminium alloy gold
The wider alloy of more, purposes, is widely used to the fields such as Aero-Space, ship and automobile.
Particle enhanced aluminum-based composite material is a kind of method for effectively improving aluminium alloy capability, and the aluminium base of ceramics enhancing at present is answered
Condensation material receives much concern, and there is particle agglomeration, particle when ceramic particle adds aluminum substrate and aluminum substrate is nonwetting, particle and aluminium
The phenomenons such as matrix thermal expansion mismatch, seriously limit the application of aluminum matrix composite.
Quasi-crystalline substance has the performance that hardness is high, wear-resisting, anti-corrosion, anti-oxidant and coefficient of friction is low, is often used as composite
Strengthen phase, but needed for the development of science and technology, the performance of quasi-crystalline substance reinforced aluminum matrix composites can not meet product, at present, mix
Close particle and cooperate with reinforced aluminum matrix composites also in conceptual phase.
The content of the invention
Goal of the invention
The purpose of the present invention is the situation for background technology, using aluminium alloy as matrix material, with zirconium carbonate and aluminum bronze iron
Beryllium quasi-crystalline substance is reinforcing agent, through vacuum melting, argon gas bottom blowing, mechanical agitation, extrusion forming, and the enhanced aluminium base of hybrid particles is made and answers
Condensation material, to improve the mechanical property of aluminum matrix composite.
Technical scheme
The chemical substance material that the present invention is used is：Aluminium alloy, aluminum bronze iron beryllium quasi-crystalline substance, scandium bearing master alloy, zirconium carbonate, oxygen
Change zinc, talcum powder, waterglass, aluminium powder, aluminium foil, absolute ethyl alcohol, deionized water, argon gas, it is as follows that it combines preparation consumption：With gram,
Milliliter, centimetre3For measurement unit
Preparation method is as follows：
(1) open-close type squeeze casting mould is prepared
Open-close type squeeze casting mould hot-work die steel making, mold cavity is rectangular, cavity dimension be 200mm ×
160mm × 90mm, mold cavity surface roughness is Ra0.08-0.16 μm；
(2) coating agent is configured
1. zinc oxide 60g ± 1g, talcum powder 40g ± 1g are weighed, measure waterglass 20mL ± 1mL, deionized water 250mL ±
1mL, adds in mixing hollander, is stirred, speed of agitator 65r/min, mixing time 90min, into viscous liquid after stirring, i.e.,
Coating agent；
(3) pre-treating aluminium copper and iron beryllium quasi-crystalline substance
1. ball milling, weighs aluminum bronze iron beryllium quasi-crystalline substance 300g ± 1g, aluminium powder 50g ± 1g, measures absolute ethyl alcohol 20mL ± 1mL, put
In the ball grinder of planetary ball mill, ball milling is carried out, rotational speed of ball-mill is 300r/min, Ball-milling Time 50min, into mixed after ball milling
Close powder；
2. it is dried in vacuo, the mixed powder after ball milling is placed in quartz container, be subsequently placed in vacuum drying chamber and dry, does
Dry 300 DEG C of temperature, vacuum 2Pa, drying time 2h obtain aluminium powder and the mixing fine powders of aluminum bronze iron beryllium quasi-crystalline substance after drying；
3. dried mixing fine powders are placed in hot pressing die, the briquet on forcing press, press pressure is
380MPa, is pressed into strip block, i.e. aluminum bronze iron beryllium quasi-crystalline substance prefabricated component；
4. aluminum bronze iron beryllium quasi-crystalline substance prefabricated component is coated with aluminium foil, be placed in drying box, 200 DEG C of preheating temperature, when drying
Between 1h；
(5) preheating zirconium carbonate, scandium bearing master alloy and open-close type squeeze casting mould
1. zirconium carbonate 330g ± 1g, scandium bearing master alloy 90g ± 1g are weighed, is coated respectively with aluminium foil, vacuum is placed in and does
In dry case, 250 DEG C of preheating temperature, vacuum 2Pa, drying time 1h；
2. open-close type squeeze casting mould is preheated, the coating agent of configuration is coated uniformly on mold cavity surface, then will
Open-close type squeeze casting mould is placed in heating furnace, opening electric heater, 220 DEG C of preheating temperature, preheating time 1h；
(6) melting hybrid particles reinforced aluminium based composites
The melting of hybrid particles reinforced aluminium based composites is carried out in vacuum melting furnace, is added in Medium frequency induction
Heat, vacuumize, complete in argon gas bottom blowing and mechanical agitation process；
1. open inside vacuum melting furnace, cleaning melting kettle, make clean inside crucible；
2. aluminium alloy 3000g ± 1g, scandium bearing master alloy 90g ± 1g are weighed, melting kettle bottom is placed in, intermediate frequency sense is closed
Smelting furnace is answered, and it is closed；
3. vavuum pump is opened, furnace air is extracted, pressure in stove is reached 2Pa；
Medium frequency induction heater is opened, is begun to warm up；
When heating-up temperature is 550 DEG C ± 2 DEG C, argon gas, argon are inputted into crucible by argon gas bottom blowpipe in crucible bottom
Gas bottom blowing flow is 200cm3Pressure in/min, adjustment stove, makes in stove invariablenes pressure of liquid in 1 atmospheric pressure；
When melt temperature is 605 DEG C ± 2 DEG C, melt is in semi-solid state, is incubated 10min in this stage, and open
Mechanical agitator, using churned mechanically method, smashes arborescent structure, speed of agitator is 100r/min；
4. stop mechanical agitation, continue to heat, when melt temperature is 850 DEG C ± 2 DEG C, the zirconium carbonate that aluminium foil is coated is led to
Cross charge pipe add aluminium alloy melt in, proceed mechanical agitation melting 10min, speed of agitator 80r/min, make zirconium carbonate with
Aluminum melt is mixed, so as to generate aluminum oxide and calorize zirconium enhancing phase；
5. after stirring, melt temperature is down to 740 DEG C, the aluminum bronze iron beryllium quasi-crystalline substance prefabricated component coated with aluminium foil is passed through into charging
Pipe is added in the aluminium alloy melt in melting kettle, continues stir-melting 10min；Agitator and argon gas bottom blowpipe are then shut off,
Stand 5min；
(7) extrusion casint
1. vacuum melting furnace is opened, crucible inner melt surface slag is removed, alloy molten solution is cast to extrusion die profile
It is interior, and extruded, squeeze pressure 230MPa, the dwell time is 20s, and hybrid particles increasing is made in extruding punch press-in molten metal
Strong type aluminum matrix composite；
2. casting is ejected, 25 DEG C are cooled in atmosphere, into hybrid particles reinforced aluminium based composites block；
(8) heat treating castings
Hybrid particles reinforced aluminium based composites block is placed in heat-treatment furnace and carries out solution treatment, argon gas is passed through,
Argon gas is passed through speed for 120cm3/min；530 DEG C ± 1 DEG C of solid solubility temperature, constant temperature soaking time 7h after constant temperature insulation, rapidly will
Casting, which is put into 55 DEG C of warm water, carries out Quenching Treatment, cool time 20s；
Casting after quenching is placed in heat-treatment furnace and carries out Ageing Treatment, aging temp is 170 DEG C ± 1 DEG C, during insulation
Between be 10h；After insulation, stop heating, be cooled to 25 DEG C with heat-treatment furnace, that is, obtain end-product：The enhanced aluminium base of hybrid particles
Composite；
(9) cleaning, test, analysis and characterization
Washes of absolute alcohol cast(ing) surface is used, makes it clean；
Metallographic structure analysis is carried out with light microscope；
Tensile strength and hardness test are carried out with universal tensile testing machine and hardometer；
Appearance analysis is carried out with ESEM；
Conclusion：Hybrid particles reinforced aluminium based composites are block, and tensile strength reaches 409MPa, and hardness reaches 150.2HV,
Elongation is up to 4.7%.
Beneficial effect
The present invention has obvious advance with background technology compared with, be for aluminum matrix composite exist tensile strength and
The problem of hardness is low, using aluminium alloy as matrix material, using aluminum bronze iron beryllium quasi-crystalline substance, zirconium carbonate as reinforcing agent, with scandium bearing master alloy
For alterant, through vacuum melting furnace melting, rotten, extruding and heat treatment, hybrid particles reinforced aluminium based composites are made, this
Preparation method technique is advanced, and data are accurately full and accurate, and the mechanical property of aluminum matrix composite is greatly improved, and tensile strength reaches
409MPa, hardness reaches 150.2HV, and elongation, up to 4.7%, is the extruding casting of advanced hybrid particles reinforced aluminium based composites
Make method.
Brief description of the drawings
Fig. 1, hybrid particles reinforced aluminium based composites melting state diagram
Fig. 2, hybrid particles reinforced aluminium based composites metallographic structure figure
Fig. 3, hybrid particles reinforced aluminium based composites fracture apperance figure
Shown in figure, list of numerals is as follows：
1st, vacuum melting furnace, 2, stove seat, 3, furnace chamber, 4, escape pipe, 5, air outlet valve, 6, workbench, 7, melting kettle, 8, in
Frequency sensing heater, 9, alloy molten solution, 10, argon gas, 11, bottom blowing motor, 12, bottom blowpipe, 13, vavuum pump, 14, vacuum tube, 15,
Argon bottle, 16, tunger tube, 17, argon gas valve, 18, electric cabinet, 19, display screen, 20, indicator lamp, 21, power switch, 22, intermediate frequency
Heat modulator, 23, bottom blowing motor modulator, 24, vavuum pump modulator, the 25, first cable, the 26, second cable, 27, charging
Pipe, 28, charging valve, 29, agitator.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described：
It is hybrid particles reinforced aluminium based composites melting state diagram, each portion position, annexation will be just shown in Fig. 1
Really, match, sequentially operate according to quantity.
The value for preparing the chemical substance material that melting is used is determined by the scope pre-set, with gram, milliliter, li
Rice3For measurement unit.
The melting of aluminum matrix composite is carried out in vacuum melting furnace, is in Frequency Induction Heating, mechanical agitation, argon
Completed in gas bottom blowing protection；
Vacuum melting furnace is vertical, and the bottom of vacuum melting furnace 1 is that stove seat 2, inside are furnace chamber 3；Set in the inner bottom part of furnace chamber 3
There is workbench 6, put and surround outside melting kettle 7, melting kettle 7 by medium frequency induction heater 8 on workbench 6, melting earthenware
It is alloy molten solution 9 in crucible 7；Escape pipe 4 is provided with the upper right quarter of vacuum melting furnace 1, and is controlled by air outlet valve 5；In vacuum melting
The left part of stove 1 is provided with argon bottle 15, and argon bottle 15 is provided with tunger tube 16, argon gas valve 17, and tunger tube 16 connects bottom blowing motor 11,
Bottom blowing motor 11 connects bottom blowpipe 12, and bottom blowpipe 12 is passed through in melting kettle 7 through stove seat 2, workbench 6, and to alloy molten solution 9
Carry out bottom blowing；Vavuum pump 13 is provided with the right lower quadrant of stove seat 2, and furnace chamber 3 is connected by vacuum tube 14；On the top of vacuum melting furnace
Portion is provided with charge pipe 27, charging valve 28 and agitator 29, and charge pipe 27, agitator 29 are stretched into melting kettle 7 through furnace roof seat；
Vacuum melting furnace 1 right part be provided with electric cabinet 18, on electric cabinet 18 provided with display screen 19, indicator lamp 20, power switch 21,
Heating in medium frequency modulator 22, bottom blowing motor modulator 23, vavuum pump modulator 24；During electric cabinet 18 is connected by the first cable 25
Frequency sensing heater 8；Electric cabinet 18 connects bottom blowing motor 11, vavuum pump 13 by the second cable 26；Filled in furnace chamber 3 by argon gas 10
Fill out.
It is the metallographic structure figure of hybrid particles reinforced aluminium based composites shown in Fig. 2, shown in figure, hybrid particles exist
It is uniformly distributed in matrix, soilless sticking phenomenon between particle, without gas hole defect.
Shown in Fig. 3, be distributed with the fracture apperance figure of hybrid particles reinforced aluminium based composites, figure it is substantial amounts of tough
Nest, shows that it has good toughness.
Embodiment
The extrusion casint principle of hybrid particles reinforced aluminium based composites is as follows：
During the extrusion casint of composite there is aluminum oxide, calorize zirconium and the enhancing of aluminum bronze iron beryllium quasi-crystalline substance in alloy molten solution
Phase, alloy molten solution is cast in extrusion die profile, opens extrusion casting machine, extruding punch press-in molten metal, squeeze pressure
230MPa, the dwell time is 20s, metal bath is crystallized at this pressure, is refined the grain structure of casting, makes enhancing
Distributed mutually is improved, and improves the uniformity of alloy structure, so that dense structure is obtained, the hybrid particles enhancing of function admirable
Type aluminum matrix composite.
Claims (2)
1. a kind of extrusion casting method of hybrid particles reinforced aluminium based composites, it is characterised in that：The chemical substance used
Material is：Aluminium alloy, aluminum bronze iron beryllium quasi-crystalline substance, scandium bearing master alloy, zirconium carbonate, zinc oxide, talcum powder, waterglass, aluminium powder, aluminium
Paper tinsel, absolute ethyl alcohol, deionized water, argon gas, it is as follows that it combines preparation consumption：With gram, milliliter, centimetre3For measurement unit
Preparation method is as follows：
(1) open-close type squeeze casting mould is prepared
Open-close type squeeze casting mould hot-work die steel making, mold cavity is rectangular, and cavity dimension is 200mm × 160mm
× 90mm, mold cavity surface roughness is Ra0.08-0.16 μm；
(2) coating agent is configured
1. zinc oxide 60g ± 1g, talcum powder 40g ± 1g are weighed, waterglass 20mL ± 1mL, deionized water 250mL ± 1mL is measured,
Add in mixing hollander, be stirred, speed of agitator 65r/min, mixing time 90min into viscous liquid after stirring, that is, is coated
Agent；
(3) pre-treating aluminium copper and iron beryllium quasi-crystalline substance
1. ball milling, weighs aluminum bronze iron beryllium quasi-crystalline substance 300g ± 1g, aluminium powder 50g ± 1g, measures absolute ethyl alcohol 20mL ± 1mL, be placed in row
In the ball grinder of planetary ball mill, ball milling is carried out, rotational speed of ball-mill is 300r/min, Ball-milling Time 50min, into mixing after ball milling
Powder；
2. it is dried in vacuo, the mixed powder after ball milling is placed in quartz container, be subsequently placed in vacuum drying chamber and dry, dries temperature
300 DEG C of degree, vacuum 2Pa, drying time 2h obtain aluminium powder and the mixing fine powders of aluminum bronze iron beryllium quasi-crystalline substance after drying；
3. dried mixing fine powders are placed in hot pressing die, the briquet on forcing press, press pressure is 380MPa,
It is pressed into strip block, i.e. aluminum bronze iron beryllium quasi-crystalline substance prefabricated component；
4. aluminum bronze iron beryllium quasi-crystalline substance prefabricated component is coated with aluminium foil, be placed in drying box, 200 DEG C of preheating temperature, drying time 1h；
(5) preheating zirconium carbonate, scandium bearing master alloy and open-close type squeeze casting mould
1. zirconium carbonate 330g ± 1g, scandium bearing master alloy 90g ± 1g are weighed, is coated respectively with aluminium foil, is placed in vacuum drying chamber
In, 250 DEG C of preheating temperature, vacuum 2Pa, drying time 1h；
2. open-close type squeeze casting mould is preheated, the coating agent of configuration mold cavity surface is coated uniformly on, then by folding
Formula squeeze casting mould is placed in heating furnace, opening electric heater, 220 DEG C of preheating temperature, preheating time 1h；
(6) melting hybrid particles reinforced aluminium based composites
The melting of hybrid particles reinforced aluminium based composites is carried out in vacuum melting furnace, be Frequency Induction Heating,
Vacuumize, complete in argon gas bottom blowing and mechanical agitation process；
1. open inside vacuum melting furnace, cleaning melting kettle, make clean inside crucible；
2. aluminium alloy 3000g ± 1g, scandium bearing master alloy 90g ± 1g are weighed, melting kettle bottom is placed in, Medium frequency induction is closed and melts
Furnace, and it is closed；
3. vavuum pump is opened, furnace air is extracted, pressure in stove is reached 2Pa；
Medium frequency induction heater is opened, is begun to warm up；
When heating-up temperature is 550 DEG C ± 2 DEG C, argon gas, argon gas bottom are inputted into crucible by argon gas bottom blowpipe in crucible bottom
Wind drift amount is 200cm3Pressure in/min, adjustment stove, makes in stove invariablenes pressure of liquid in 1 atmospheric pressure；
When melt temperature is 605 DEG C ± 2 DEG C, melt is in semi-solid state, is incubated 10min in this stage, and open machinery
Agitator, using churned mechanically method, smashes arborescent structure, speed of agitator is 100r/min；
4. stop mechanical agitation, continue to heat, when melt temperature is 850 DEG C ± 2 DEG C, the zirconium carbonate that aluminium foil is coated is by adding
Expects pipe is added in aluminium alloy melt, proceeds mechanical agitation melting 10min, speed of agitator 80r/min, zirconium carbonate is melted with aluminium
Liquid is mixed, so as to generate aluminum oxide and calorize zirconium enhancing phase；
5. after stirring, melt temperature is down to 740 DEG C, the aluminum bronze iron beryllium quasi-crystalline substance prefabricated component coated with aluminium foil is added by charge pipe
Enter in the aluminium alloy melt in melting kettle, continue stir-melting 10min；Agitator and argon gas bottom blowpipe are then shut off, is stood
5min；
(7) extrusion casint
1. vacuum melting furnace is opened, crucible inner melt surface slag is removed, alloy molten solution is cast in extrusion die profile, and
Extruded, squeeze pressure 230MPa, the dwell time is 20s, hybrid particles reinforced aluminium is made in extruding punch press-in molten metal
Based composites；
2. casting is ejected, 25 DEG C are cooled in atmosphere, into hybrid particles reinforced aluminium based composites block；
(8) heat treating castings
Hybrid particles reinforced aluminium based composites block is placed in heat-treatment furnace and carries out solution treatment, argon gas, argon gas is passed through
Speed is passed through for 120cm3/min；530 DEG C ± 1 DEG C of solid solubility temperature, constant temperature soaking time 7h, after constant temperature insulation, rapidly by casting
It is put into 55 DEG C of warm water and carries out Quenching Treatment, cool time 20s；
Casting after quenching is placed in heat-treatment furnace and carries out Ageing Treatment, aging temp is 170 DEG C ± 1 DEG C, and soaking time is
10h；After insulation, stop heating, be cooled to 25 DEG C with heat-treatment furnace, that is, obtain end-product：The enhanced aluminum-base composite of hybrid particles
Material；
(9) cleaning, test, analysis and characterization
Washes of absolute alcohol cast(ing) surface is used, makes it clean；
Metallographic structure analysis is carried out with light microscope；
Tensile strength and hardness test are carried out with universal tensile testing machine and hardometer；
Appearance analysis is carried out with ESEM；
Conclusion：Hybrid particles reinforced aluminium based composites are block, and tensile strength reaches 409MPa, and hardness reaches 150.2HV, elongation
Rate is up to 4.7%.
2. a kind of extrusion casting method of hybrid particles reinforced aluminium based composites according to claim 1, its feature
It is：The melting of aluminum matrix composite is carried out in vacuum melting furnace, is in Frequency Induction Heating, mechanical agitation, argon gas
Completed in bottom blowing protection；
Vacuum melting furnace is vertical, and the bottom of vacuum melting furnace (1) be that stove (2), inside are furnace chamber (3)；At furnace chamber (3) interior bottom
Portion is provided with workbench (6), and melting kettle (7) is put on workbench (6), and melting kettle (7) is outside by medium frequency induction heater
(8) it surround, is alloy molten solution (9) in melting kettle (7)；Vacuum melting furnace (1) upper right quarter be provided with escape pipe (4), and by
Air outlet valve (5) is controlled；Vacuum melting furnace (1) left part be provided with argon bottle (15), argon bottle (15) provided with tunger tube (16),
Argon gas valve (17), tunger tube (16) connection bottom blowing motor (11), bottom blowing motor (11) connection bottom blowpipe (12), bottom blowpipe (12) is worn
Cross stove seat (2), workbench (6) to be passed through in melting kettle (7), and bottom blowing is carried out to alloy molten solution (9)；In the bottom right of stove seat (2)
Portion is provided with vavuum pump (13), and connects furnace chamber (3) by vacuum tube (14)；Charge pipe is provided with the top of vacuum melting furnace
(27), charging valve (28) and agitator (29), charge pipe (27), agitator (29) are stretched into melting kettle (7) through furnace roof seat；
Vacuum melting furnace (1) right part be provided with electric cabinet (18), on electric cabinet (18) provided with display screen (19), indicator lamp (20),
Power switch (21), heating in medium frequency modulator (22), bottom blowing motor modulator (23), vavuum pump modulator (24)；Electric cabinet
(18) medium frequency induction heater (8) is connected by the first cable (25)；Electric cabinet (18) connects bottom blowing by the second cable (26)
Motor (11), vavuum pump (13)；Filled in furnace chamber (3) by argon gas (10).
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| CN113770368A (en) * | 2021-09-16 | 2021-12-10 | 浙江吉利控股集团有限公司 | TiC particle reinforced aluminum alloy powder for metal 3D printing and preparation method thereof |
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