JP2019099850A - Method for producing aluminum alloy-based composite material, and aluminum alloy-based composite material - Google Patents

Abstract

To provide a method for producing an aluminum alloy-based composite material capable of uniformly impregnating an aluminum alloy.SOLUTION: There is provided a method for producing an aluminum alloy-based composite material in which a ceramic powder which is a reinforcement material is compounded in an aluminum alloy, which comprises: a filling step of filling a porous container 3 formed of a porous material with a ceramic powder 2; a step of installing the porous container in a mold and pouring a molten aluminum alloy in the mold; and an impregnation step of impregnating the ceramic powder inside through the porous container with the molten aluminum alloy by applying a pressure to the molten aluminum alloy in the mold.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a method for producing an aluminum alloy matrix composite material in which reinforcements are uniformly distributed.

  Conventionally, an aluminum alloy matrix composite material in which a ceramic powder which is a reinforcing material is compounded in an aluminum alloy is known. As a method of producing this aluminum alloy matrix composite material, for example, Patent Document 1 discloses an aluminum matrix in which a filler of this powder is impregnated with a molten metal of aluminum alloy using powder of aluminum borate as ceramic powder which is a reinforcing material. A method of making a composite material is described. Such a production method is called a molten metal casting method or a high pressure casting method.

  In the manufacturing method described in Patent Document 1, a step of filling aluminum borate powder raw material to obtain a filler, a step of preheating the filler, a step of heating an aluminum alloy to obtain a molten aluminum alloy, and preheating And pressure infiltrating the molten aluminum alloy into the filler. In such a conventional manufacturing method, a filler is obtained by filling a container made of iron or SUS with ceramic powder such as aluminum borate powder raw material.

JP, 2008-38172, A

The following problems remain in the above-mentioned prior art.
That is, in the conventional method for producing an aluminum-based composite material, as shown in FIG. 14, a metal container 103 made of iron or SUS is filled with the ceramic powder 102 to form a filler, and an aluminum alloy is made from the upper opening of the metal container 103. Since the molten metal Al1 is made to flow in and the filling body of the ceramic powder 102 is impregnated with the aluminum alloy, the impregnation ratio of the aluminum alloy is different between the opening where the molten metal Al1 of the aluminum alloy flows and the bottom portion far from the opening. There is a problem that the entire packing of the ceramic powder 102 is not uniformly impregnated. Therefore, it has been difficult to obtain a uniform composite material, particularly in complicated shapes and thin plate shapes.

  This invention is made in view of the above-mentioned subject, and an object of the present invention is to provide a manufacturing method of an aluminum group composite material which can be made to impregnate an aluminum alloy uniformly.

  The present invention adopts the following configuration in order to solve the problems. That is, the method for producing an aluminum-based composite material according to the first invention is a method for producing an aluminum alloy-based composite material in which a ceramic powder which is a reinforcing material is compounded in an aluminum alloy, and the ceramic powder is porous. A filling step of filling a porous container made of a material, a step of placing the porous container in a mold, a step of pouring a molten aluminum alloy into the mold, a pressure applied to the molten metal in the mold And impregnating the ceramic powder in the interior through the porous container with the molten metal.

  In this method for producing an aluminum alloy matrix composite material, since the method includes the impregnation step of impregnating the ceramic powder in the interior with the molten metal through the porous container, the aluminum alloy can be obtained from almost all directions through the porous material of the porous container. The molten metal uniformly flows into the porous container, enabling uniform impregnation of the entire ceramic powder.

The method of producing an aluminum-based composite material according to the second invention is characterized in that, in the first invention, the porous container is formed of carbon graphite.
That is, in this method for producing an aluminum alloy matrix composite material, the porous container is formed of carbon graphite, so the coefficient of thermal expansion is smaller than that of iron or SUS containers, and deformation of the container due to thermal expansion almost occurs. It also becomes possible to use containers of complicated shape. Moreover, when the composite material hardened | cured after an impregnation process is taken out from a porous container, since a porous container is carbon graphite, it is possible to separate a composite material and a porous container easily.

The method for producing an aluminum-based composite material according to the third invention is characterized in that in the first or second invention, the method further comprises a preheating step of preheating the porous container after the filling step.
That is, in this method for producing an aluminum alloy matrix composite material, since the porous container is preheated after the filling step, the interfacial energy of the particles of the filled ceramic powder is increased, and the molten metal of the aluminum alloy Improve the wettability with In particular, since the porous container is formed of carbon graphite, the thermal expansion coefficient of the porous container is low, and deformation of the container due to preheating hardly occurs.

The method of producing an aluminum-based composite material according to a fourth invention is characterized in that, in any one of the first to third inventions, the ceramic powder is a powder of aluminum borate.
That is, in the method for producing an aluminum alloy matrix composite material, since the ceramic powder is a powder of aluminum borate, a composite material excellent in processability is obtained by using a powder of aluminum borate having a relatively low hardness. be able to.

The method for producing an aluminum-based composite material according to the fifth invention is characterized in that, in the fourth invention, a powder of SiC is further added as the ceramic powder.
That is, in this method for producing an aluminum alloy matrix composite material, powder of SiC is further added as a ceramic powder, and therefore, according to the addition ratio of powder of SiC having a lower coefficient of thermal expansion and higher hardness than aluminum borate. The overall coefficient of thermal expansion can be reduced and the hardness can be increased.
Moreover, as an effect of the powder of SiC, the wettability with the powder of aluminum borate is good, the interface with the powder of aluminum borate is modified, and a stronger bond can be obtained.

The method of producing an aluminum-based composite material according to a sixth aspect of the present invention is the aluminum-based composite material according to the fifth aspect, wherein in the filling step, the powder of aluminum borate is 20 and the powder of SiC is 0.5 to It is characterized by mixing at a ratio of 2.0.
That is, in the manufacturing method of this aluminum alloy matrix composite material, the powder of aluminum borate is mixed with the powder 20 at a ratio of 20 to the powder of SiC in a ratio of 0.5 to 2.0 in a volume ratio in the filling step. A composite material in which the reduction of the coefficient of thermal expansion and the good processability are compatible can be obtained.
When the proportion of powder of aluminum borate is 20 and the proportion of powder of SiC is less than 0.5, the thermal expansion coefficient lowering effect can not be sufficiently obtained, and the proportion of powder of SiC is If it exceeds 1.5, the overall hardness becomes too high, and the processability deteriorates.

According to the present invention, the following effects are achieved.
That is, according to the method for producing an aluminum-based composite material according to the present invention, since the impregnation step of impregnating the ceramic powder in the interior with the molten metal through the porous container is provided, the porous material of the porous container is substantially used. The melt of the aluminum alloy uniformly flows into the porous container from all directions, enabling uniform impregnation to the entire ceramic powder.
Therefore, according to the manufacturing method of the present invention, it is possible to obtain an aluminum-based composite material having a uniform coefficient of thermal expansion and hardness as a whole and to obtain a uniform aluminum-based composite material having a complicated shape and thin plate shape. It will be possible.
The aluminum-based composite material produced by the method of the present invention is lightweight, has a high Young's modulus, a high vibration damping rate, a high thermal conductivity and a high wear resistance, so it is possible to manufacture an XY table such as a bonding machine It is suitable as a material for a robot arm, a chip mounter, a scroll component for an air compressor, etc. used for an apparatus or the like.

In one Embodiment of the manufacturing method of the aluminum-based composite material which concerns on this invention, it is a disassembled perspective view which shows the porous container before being filled with ceramic powder and sealing by a cover part. In this embodiment, it is an exploded perspective view showing porous containers of rectangular solid shape (a) and cylindrical shape (b). In this embodiment, it is a simple sectional view showing a process from pouring a molten metal to a knockout process in order of processes. In this embodiment, it is a perspective view which shows the process after a knockout process in order of a process. It is a SEM image which shows the aluminum group composite material which used aluminum borate as ceramic powder in the prior art example of the manufacturing method of the aluminum group composite material which concerns on this invention. It is the SEM image which further expanded the image of FIG. It is a SEM image which shows the aluminum group composite material which used the aluminum borate as ceramic powder in the Example of the manufacturing method of the aluminum group composite material which concerns on this invention. It is the SEM image which further expanded the image of FIG. It is a SEM image which shows the aluminum group composite material which used the mixed powder of aluminum borate and SiC as ceramic powder in the Example of the manufacturing method of the aluminum group composite material which concerns on this invention. It is the SEM image which further expanded the image of FIG. It is a graph which shows the damping oscillation characteristic of aluminum. In the prior art example of the manufacturing method of the aluminum group composite material which concerns on this invention, it is a graph which shows the damping vibration characteristic of the aluminum group composite material which used aluminum borate as ceramic powder. In the Example of the manufacturing method of the aluminum-based composite material which concerns on this invention, it is a graph which shows the damping vibration characteristic of the aluminum-based composite material which used aluminum borate as ceramic powder. In the conventional example of the manufacturing method of aluminum base composite material concerning the present invention, it is a sectional view (a) showing a container with which ceramic powder was filled, and a sectional view showing a molten metal impregnation process of aluminum alloy.

  Hereinafter, an embodiment of a method of manufacturing an aluminum-based composite material according to the present invention will be described with reference to FIGS. 1 to 6.

The method for producing an aluminum-based composite material according to the present embodiment is a method for producing an aluminum alloy-based composite material 1 in which a ceramic powder 2 as a reinforcing material is compounded in an aluminum alloy, as shown in FIGS. 1 to 3. Filling the ceramic container 2 in the porous container 3 formed of the porous material, and placing the porous container 3 in the mold 4 and pouring the molten metal Al1 of the aluminum alloy into the mold 4 And an impregnating step of applying pressure to the molten metal Al1 in the mold 4 and impregnating the ceramic powder 2 inside with the molten metal Al1 through the porous container 3.
Moreover, the manufacturing method of this embodiment has the preheating process which preheats the porous container 3 after the said filling process.

The porous container 3 is formed of a porous (open porous) material having innumerable communication holes which do not melt even if the aluminum alloy molten metal Al1 is put therein. In particular, the porous container 3 is preferably made of carbon graphite.
For example, a powder of aluminum borate (9Al ₂ O ₃ .2B ₂ O ₃ ) is used as the ceramic powder 2.
Further, in order to obtain a composite material having a thermal expansion coefficient lower than that of aluminum borate and a high hardness, a powder of SiC (silicon carbide) is further added as the ceramic powder 2.
In that case, in the filling step, it is preferable that the powder of aluminum borate is mixed with the powder of 20 at a volume ratio of 0.5 to 2.0.

  The production method of this embodiment will be described in more detail in the case of using a porous container 3 of carbon graphite and using a mixed powder of aluminum borate and SiC as the ceramic powder 2; It prepares, and as shown in FIG. 1, it packs in the porous container 3 of carbon graphite. When the mixed powder of aluminum borate and SiC is used as the ceramic powder 2, the two powders are mixed at a predetermined ratio, and the respective components are sufficiently uniformly stirred and mixed by a rotary mixer or the like.

  As the aluminum alloy, for example, alloy numbers A1050, A5052, A6061, A7075, AC4C, AC8A, ADC12 and the like can be adopted, and other types can also be adopted. In particular, AC4C, AC8A and the like having high thermal conductivity and high strength are preferable for the aluminum alloy as materials having good physical properties and less occurrence of impregnation defects. The chemical composition of such an alloy is an aluminum alloy having a volume ratio of Si: 6 to 13%, Mg: 0.2 to 1.3%, and Al: remaining.

If the content of Si is small, impregnation defects are likely to occur at the time of high pressure impregnation. Therefore, it is preferable to set the contained Si in a range of 6 to 12% by volume. That is, when the volume fraction of Si is less than 6%, the flow of the molten metal becomes worse, and it becomes difficult for the molten metal of the aluminum alloy to penetrate between the ceramic powder 2 as the reinforcing material.
Further, as the powder of aluminum borate, for example, one having a center particle diameter of about 30 to 50 μm is adopted, and as the powder of SiC, for example, one having a center particle diameter of 2 to 4 μm is adopted.

As the porous container 3, various shapes using an open porous carbon graphite block can be adopted. For example, as shown in (a) of FIG. 2, a box-shaped main body 3 a and a lid 3 b Alternatively, as shown in FIG. 2 (b), a container 23 may be employed which has a bottomed cylindrical main body 23a and a lid 23b.
In addition, as a porous diameter of the porous container 3, 10 micrometers or less are desirable. In addition, since the porous flow path of the porous container 3 is complicated, the SiC powder whose particle diameter is smaller than the diameter of the porous body does not flow out through the porous flow path.

In addition, when filling the ceramic powder 2 in the porous container 3, it can be filled in the state which a clearance gap does not produce easily by packing while giving vibration to the porous container 3 with a vibrating machine etc.
After filling, the porous container 3 is placed in a preheating furnace (muffle furnace etc.) together with the lid 3b in a sealed state, and preheated at, for example, 500 to 700 ° C. This preheating step is a step for enhancing the interfacial energy of the ceramic powder 2 and improving the wettability with the aluminum alloy melt.

  In the case of a conventional iron or SUS container, since the average coefficient of thermal expansion coefficient is 14 to 17 ppm / k, expansion deformation of the container occurs at the time of preheating. In particular, the more complicated the container shape, the more difficult the design considering thermal expansion becomes. However, since the porous container 3 using the carbon graphite block of the present embodiment has an average coefficient of thermal expansion coefficient of about 5 to 7 ppm / k, deformation of the container due to thermal expansion at the time of preheating hardly occurs.

Next, as shown in FIG. 3A, the porous container 3 filled with the preheated ceramic powder 2 is placed in the mold 4 preheated to 200 to 250 ° C. Is poured into the mold 4.
A plurality of projections may be provided on the bottom of the mold 3 so that the molten metal Al1 flows below the bottom of the porous container 3, and the porous container 3 may be placed on the plurality of projections. In this case, the porous container 3 can be placed in a floating state from the bottom of the mold 3, and the molten metal Al 1 can be wound around the bottom of the porous container 3. Thereby, molten metal Al1 can be made to permeate inside from all directions of porous container 3.

After the molten metal Al1 of the aluminum alloy is quantitatively poured into the mold 4, as shown in FIG. 3B, the molten metal Al1 of the aluminum alloy is pressurized at 80 to 140 MPa by the punch 5a of the press 5.
At this time, the porous container 3 is impregnated with the molten metal Al 1 of the aluminum alloy by pressure energy, and is further impregnated with the ceramic powder 2 in the porous container 3.

Pressurization is continued in the press 5 until the aluminum alloy melt Al1 is completely solidified.
When the impregnation speed (flow velocity) of the molten alloy Al1 of this aluminum alloy is high, a turbulent flow occurs to move the ceramic powder 2, and the distribution of the ceramic powder 2 becomes uneven, and the insertion of aluminum called metal vane is The impregnation speed is set to a low speed so that turbulence does not occur. Therefore, the pressing force and the pressing speed by the press 5 are adjusted by the volume ratio and the shape of the ceramic powder 2 in the porous container 3.

Next, when the above impregnation is completed and the temperature is lowered to about 200 to 300 ° C., as shown in FIG. 3C, the porous container 3 and its inner aluminum group are formed by the knockout 6 in the mold 4. An integrally formed product 7 composed of the composite material 1 and the excess thickness portion Al2 of the hardened aluminum alloy is taken out from the mold 4.
Furthermore, as shown in (a) of FIG. 4, the single-piece 7 taken out is cut with a band saw or the like along the cutting line C, for example, and the excess thickness Al2 is removed, as shown in FIG. As shown to (b) of, the porous container 3 is exposed.

  Next, as shown in (c) of FIG. 4, the lid 3 b of the porous container 3 is removed, and as shown in (d) of FIG. 4, the wall portion and the bottom portion of the porous container 3 are cut. The composite material 1 is taken out by removing it. In addition, since the porous container 3 is carbon graphite, the composite material 1 can be easily taken out.

  The composite material 1 thus taken out is processed into a desired shape by milling, polishing, NC processing or the like. The manufactured aluminum matrix composite material 1 contains an aluminum alloy as a base material, and contains 30 to 40% of aluminum borate and 1.5 to 2% of SiC by volume ratio as a reinforcing material, and an aluminum alloy matrix It is a composite material in which a ceramic powder 2 composed of aluminum borate powder and SiC powder is uniformly dispersed.

  As described above, in the method of manufacturing the aluminum-based composite material 1 according to the present embodiment, since the ceramic powder 2 inside is impregnated with the molten metal Al 1 through the porous container 3, the porous material of the porous container 3 is obtained. The molten metal Al 1 of the aluminum alloy uniformly flows into the porous container 3 from almost all directions through the above, and uniform impregnation can be performed on the entire ceramic powder 2.

  In addition, since the porous container 3 is formed of carbon graphite, the thermal expansion coefficient is smaller than that of iron or SUS containers, and deformation of the container due to thermal expansion hardly occurs, so that a container having a complicated shape is used. Will also be possible. Moreover, when taking out the composite material 1 hardened | cured after an impregnation process from the porous container 3, since the porous container 3 is carbon graphite, it is possible to separate the composite material 1 and the porous container 3 easily. .

  Further, since the preheating step of preheating the porous container 3 is included after the filling step, the interface energy of the particles of the filled ceramic powder 2 becomes high, and the wettability with the aluminum alloy molten metal Al 1 is improved. In particular, since the porous container 3 is formed of carbon graphite, the thermal expansion coefficient of the porous container 3 is low, and deformation of the container due to preheating hardly occurs.

In addition, when the ceramic powder 2 is a powder of aluminum borate, a composite material having excellent processability can be obtained by using a powder of aluminum borate having a relatively low hardness.
In addition, when powder of SiC is further added as the ceramic powder 2, the coefficient of thermal expansion of the powder is lowered according to the addition ratio of the powder of SiC having a lower coefficient of thermal expansion than aluminum borate and higher hardness and higher hardness. be able to.
Moreover, as an effect of the powder of SiC, the wettability with the powder of aluminum borate is good, the interface with the powder of aluminum borate is modified, and a stronger bond can be obtained.
In particular, in the filling step, the powder of aluminum borate is mixed with the powder of 20 in a proportion by volume, and the powder of SiC is mixed in a proportion of 0.5 to 2.0, thereby reducing the overall coefficient of thermal expansion and good processing. It is possible to obtain a composite material compatible with the properties.

The SEM image is shown in FIGS. 7-10 about the aluminum group composite material actually produced based on the manufacturing method of the said embodiment.
7 and 8 are SEM images of an aluminum-based composite material using only aluminum borate as a ceramic powder. 9 and 10 are SEM images of an aluminum-based composite material using a mixed powder of aluminum borate and SiC as a ceramic powder. In addition, the aluminum alloy of alloy number AC4C was used for both.
Further, SEM images of aluminum-based composite materials manufactured based on the conventional manufacturing method shown in FIG. 14 are shown in FIGS. 5 and 6. This conventional example is an aluminum-based composite material using only aluminum borate as a ceramic powder.

As can be seen from these images, in the conventional example, the aluminum borate powder and the surrounding aluminum are distinguished by clear shading, and the boundary of the structure is clear, while the manufacturing method of this embodiment is used. In each of the examples described above, the contrast of the aluminum borate powder and the surrounding aluminum was not clear as compared with the conventional example, and the boundary of the structure was not clear. In particular, it can be seen that the tendency of the embodiment of the present invention in which the powder of SiC is mixed is more remarkable. This is because in the embodiment of the present invention, the bond between aluminum borate and aluminum is stronger than in the prior art, and the boundaries between them are vague, and in the embodiment where the SiC powder is mixed, the wettability is Is considered to be further improved and the coupling is further strengthened.
In addition, it can be understood that the ceramic powder is uniformly dispersed and distributed in the aluminum alloy matrix by producing the method according to the present embodiment.

  Next, as an example of the present invention, Young's modulus, density, specific Young's modulus, heat, and the like of an aluminum-based composite material manufactured by the manufacturing method of the above embodiment using a mixed powder of aluminum borate and SiC as ceramic powder. The results of measurement of the conductivity, vibration damping characteristics and processability are shown in Table 1. In addition, in Table 1, the aluminum group composite material by the Example of this invention is described as a "developed item." For comparison, cast iron FC100, alumina ceramics, aluminum-based silicon carbide reinforced composite material by the conventional method, and aluminum-based aluminum borate reinforced composite material by the conventional method also have similar characteristics as “conventional products” in Table 1 Described.

As for the vibration damping characteristics, a test piece (10 × 10 × 100 mm) of the composite material suspended by a string was vibrated by an impulse hammer, and the resulting vibration was detected by an accelerometer and measured by an FFT analyzer. And based on what plotted the peak of the damping wave of each composite material, damping ratio was computed and evaluated from a multiplier coefficient and frequency.
The vibration damping characteristics of the aluminum-based composite materials produced in the examples of the present invention are shown in FIG. 13, and for comparison, the vibration damping characteristics of aluminum are shown in FIG. 11 and the aluminum-based composites produced in the conventional example shown in FIG. The vibration damping characteristics of the material are shown in FIG.
The machinability is evaluated by observing the rake surface and the front flank of the tool when the composite material is three-dimensionally cut under a predetermined condition by an NC lathe, and measuring the flank friction width. did.

From these measurement results, the aluminum-based composite material according to the embodiment of the present invention has properties such as a Young's modulus of about 2 times, a density of about 40%, and a thermal conductivity of 2.5 times that of cast iron. Have.
In addition, the aluminum-based composite material according to the embodiment of the present invention has a processability as good as that of 2000-based aluminum as compared with alumina ceramics.
Moreover, in the aluminum alloy (T6 process) of alloy number A6061, although the tensile strength in 300 degreeC is about 30 Mpa, the aluminum group composite material of the Example of this invention has 90 Mpa of tensile strength.

  Furthermore, the thermal conductivity of an aluminum-based composite material (aluminum-based aluminum borate reinforced composite material) according to the conventional method using only aluminum borate having a low thermal expansion coefficient of 8 to 10 w / m · k as a ceramic powder has a low thermal conductivity. Although the heat dissipating property is poor, the thermal conductivity and mechanical properties of the aluminum-based composite material produced by the method of the present invention further added with SiC are improved as compared with the prior art. In addition, even if SiC was added, the aluminum-based composite material according to the example of the present invention was excellent with almost no change in processing characteristics.

  Further, it can be seen that the vibration damping characteristics are improved in the aluminum-based composite material of the present embodiment as compared with the conventional aluminum-based aluminum borate reinforced composite material. The conventional aluminum-based silicon carbide reinforced composite material has excellent vibration damping properties but poor processability, whereas the aluminum-based composite material according to the embodiment of the present invention has good processability.

The vibration damping characteristics of the aluminum shown in FIG. 11 are such that the vibration is not easily damped, but in the aluminum-based composite material according to the embodiment of the present invention shown in FIG. There is. Further, while the aluminum-based composite material according to the conventional example shown in FIG. 12 has a lot of noise in the attenuation waveform, the aluminum-based composite material according to the embodiment of the present invention shown in FIG. I understand.
This is because the aluminum base composite material according to the conventional example has insufficient bonding in the structure, and the bonding strength is nonuniform as a whole, resulting in noise in the attenuation waveform, and the aluminum according to the embodiment of the present invention In the base composite material, it is considered that an attenuation waveform with less noise component is obtained because the bonding in the tissue is uniform and strong.

  Therefore, it is used not only for light weight and high Young's modulus, but also for XY table such as bonding machines that require high vibration damping characteristics and processability, and robot arms used in semiconductor manufacturing equipment etc. As the material to be treated, the aluminum-based composite material produced by the process of the present invention is suitable.

The technical scope of the present invention is not limited to the above embodiment and examples, and various modifications can be made without departing from the spirit of the present invention.
For example, although aluminum borate or SiC is used as the ceramic powder in the above embodiment, one or more other ceramic powders such as alumina (Al ₃ N ₄ ) powder, whisker-like potassium Ti oxide, etc. may be employed. Is also possible.

  DESCRIPTION OF SYMBOLS 1 ... Aluminum alloy base composite material, 2, 102 ... Ceramics powder, 3 ... Porous container, 4 ... Mold | mold, Al1 ... Molten metal of aluminum alloy

Claims (6)

A method for producing an aluminum alloy matrix composite material in which a ceramic powder as a reinforcing material is compounded in an aluminum alloy,
Filling the ceramic powder into a porous container formed of a porous material;
Placing the porous container in a mold and pouring a molten aluminum alloy into the mold;
A method of manufacturing an aluminum alloy matrix composite material, comprising the steps of: applying an pressure to the molten metal in the mold; and impregnating the ceramic powder in the interior through the porous container with the molten metal. In the method for producing an aluminum alloy matrix composite material according to claim 1,
The method for producing an aluminum alloy matrix composite material, wherein the porous container is formed of carbon graphite. In the method for producing an aluminum alloy matrix composite material according to claim 1 or 2,
A method for producing an aluminum alloy matrix composite material, comprising a preheating step of preheating the porous container after the filling step. In the method for producing an aluminum alloy matrix composite material according to any one of claims 1 to 3,
The method for producing an aluminum alloy matrix composite material, wherein the ceramic powder is a powder of aluminum borate. In the method for producing an aluminum alloy matrix composite material according to claim 4,
A powder of SiC is further added as said ceramic powder, The manufacturing method of the aluminum alloy base composite material characterized by the above-mentioned. In the method for producing an aluminum alloy matrix composite material according to claim 5,
In the filling step, the powder of aluminum borate is mixed with the powder of aluminum borate in a ratio of 20 to 20, and the powder of SiC is mixed in a ratio of 0.5 to 2.0. .