High-entropy alloy particle reinforced low-thermal-expansion aluminum-based composite material capable of being applied to photovoltaic module and preparation method of high-entropy alloy particle reinforced low-thermal-expansion aluminum-based composite material

Abstract

The invention provides a high-entropy alloy particle reinforced low-thermal-expansion aluminum-based composite material capable of being applied to a photovoltaic module and a preparation method, and relates to the technical field of metal-based composite materials, the high-entropy alloy particle reinforced low-thermal-expansion aluminum-based composite material comprises the following components: aluminum alloy powder and high-entropy Mn < 0.8 > Co < 0.4 > Ni < 0.8 > Ge < 1-x > Si < x > giant negative thermal expansion alloy particles; the interface bonding strength is ensured by adopting a vacuum hot pressing process, the segregation problem of a traditional casting method is avoided, thermal expansion of the aluminum alloy can be effectively counteracted through the thermal shrinkage characteristic of the multi-component high-entropy negative thermal expansion particles, the low thermal expansion temperature zone of the composite material is remarkably widened, and the aluminum-based composite material is simple in preparation process, low in cost and suitable for industrial production. And the thermal expansion coefficient can be reduced to 10.6 * 10 <-6 > / DEG C and is reduced by about 55% compared with a matrix aluminum alloy, and good mechanical performance and machining performance of the aluminum alloy are kept.

Description

Technical Field

[0001] The present invention relates to the technical field of metal matrix composites, and particularly to a low thermal expansion aluminum matrix composite reinforced with high entropy alloy particles applicable to photovoltaic modules and a preparation method thereof. Background Art

[0002] Aluminum alloys are widely used in various industrial fields due to their advantages of low density, high specific strength, and corrosion resistance. However, the relatively high thermal expansion coefficient of aluminum alloys (about 23×10 -6 / °C) limits their application in precision devices (such as optical instruments, measuring devices, aerospace components, sensitive components, and photovoltaic modules, etc.). In an environment with temperature changes, the mismatch in thermal expansion coefficients between aluminum alloys and other materials (such as alloys, glass, ceramics, and polymers, etc.) will cause interfacial thermal stress, seriously affecting the accuracy and service life of the devices. For example, in the aluminum alloy frame of a photovoltaic module, since the thermal expansion coefficient of the aluminum alloy is more than twice that of the photovoltaic glass (about 9×10 -6 / °C), this mismatch in thermal expansion coefficients will cause fatigue failure of the sealant layer at the aluminum alloy frame-glass interface and initiate and expand cracks at the glass edge under diurnal temperature differences and seasonal temperature fluctuations, increasing the risk of glass bursting. Therefore, how to regulate the thermal expansion performance of aluminum alloys and improve their thermal shock resistance and dimensional stability is a problem that needs to be solved currently;

[0003] Currently, the methods for reducing the thermal expansion coefficient of aluminum alloys mainly include:

[0004] 1) Alloying with low expansion elements (such as Si, Ni, Mo, etc.), but its effect of reducing the thermal expansion coefficient is limited and it will damage other properties of the material;

[0005] 2) Preparing aluminum matrix composites. Although traditional reinforcing phases (such as SiC, Al2O3, ZrV2O7, CaZr2(PO4)O3, etc.) can significantly reduce the thermal expansion coefficient, there are interface problems between these carbides and oxides and the aluminum metal matrix, which will significantly reduce the toughness and processing performance of the material;

[0006] High entropy MnCoNiGeSi negative thermal expansion alloys are a class of new functional materials with the characteristic of "giant thermal shrinkage and cold expansion", but the temperature range of their giant negative thermal expansion is relatively narrow. Therefore, a series of alloy particles with different negative thermal expansion temperature ranges but continuous negative thermal expansion effects can be used as reinforcing phases to be compounded with aluminum alloys with positive thermal expansion to obtain aluminum alloys with adjustable low thermal expansion coefficients in a wide temperature range. However, there is no research on preparing high entropy negative thermal expansion particle-reinforced aluminum alloy composites by vacuum hot pressing in the existing technology. Therefore, the present invention proposes a low thermal expansion aluminum matrix composite reinforced with high entropy alloy particles applicable to photovoltaic modules and a preparation method thereof to solve the problems existing in the existing technology. Summary of the Invention

[0007] In view of the above problems, the present invention proposes a low-thermal-expansion aluminum matrix composite reinforced with high-entropy alloy particles for photovoltaic modules and a preparation method thereof. The preparation method uses a vacuum hot pressing process to ensure the interfacial bonding strength and avoid the segregation problem of the traditional casting method. The thermal shrinkage characteristics of multi-component high-entropy negative thermal expansion particles can effectively offset the thermal expansion of aluminum alloy and significantly broaden the low-thermal-expansion temperature range of the composite material.

[0008] To achieve the object of the present invention, the present invention is realized through the following technical solutions: A low-thermal-expansion aluminum matrix composite reinforced with high-entropy alloy particles for photovoltaic modules, comprising the following components: aluminum alloy powder, high-entropy Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x giant negative thermal expansion alloy particles.

[0009] Further improvement lies in that: the aluminum alloy powder is composed of matrix element aluminum and trace elements silicon, magnesium, and copper.

[0010] Further improvement lies in that: in the high-entropy Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x giant negative thermal expansion alloy particles, 0.25 ≤ x ≤ 0.40.

[0011] A preparation method of a low-thermal-expansion aluminum matrix composite reinforced with high-entropy alloy particles for photovoltaic modules, comprising the following steps:

[0012] S1: Weigh the elements Mn, Co, Ni, Ge, and Si according to the molar mass ratio, and prepare a Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x alloy ingot by vacuum arc melting;

[0013] S2: Put the alloy blocks obtained by mechanically crushing the Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x alloy ingot into a planetary ball mill for ball milling to obtain Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x alloy particles;

[0014] S3: Mix the Mn with an equal weight ratio0.8 Co 0.4 Ni 0.8 Ge 1-x Si x The alloy particles are mixed with aluminum alloy powder in a ball mill according to different weight ratios;

[0015] S4: Mix Mn with different proportions 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x Load the alloy particle / aluminum alloy powder into a mold, vacuum hot press and then cool to obtain Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x alloy particle / aluminum alloy composite material.

[0016] A further improvement lies in that: in the step S1, each component Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x The alloy has different negative thermal expansion temperature ranges but continuous negative thermal expansion effects.

[0017] A further improvement lies in that: in the step S2, ball mill for 2 - 3 hours according to the parameters of a ball-to-material ratio of 6 - 9:1 and a rotation speed of 80 - 100 r / min to obtain Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x alloy particles.

[0018] A further improvement lies in that: in the step S3, during mixing, ball mill for 1 - 2 hours according to the parameters of a ball-to-material ratio of 7 - 10:1 and a rotation speed of 90 - 110 r / min to make each alloy component evenly mixed.

[0019] A further improvement lies in that: the step S4 includes the following steps:

[0020] Load the Mn mixed with different proportions 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x alloy particle / aluminum alloy powder into a mold;

[0021] Put it into a vacuum hot press furnace and vacuum hot press for 30 - 40 minutes under the conditions of 500 - 570 °C and 25 - 30 MPa;

[0022] Cool to room temperature to prepare Mn 0.8Co 0.4 Ni 0.8 Ge 1-x Si x High-entropy alloy particles / aluminum alloy composite materials.

[0023] The beneficial effects of the present invention are as follows:

[0024] 1. The present invention adopts a vacuum hot pressing process to ensure the interfacial bonding strength, avoid the segregation problem of the traditional casting method, and the thermal shrinkage characteristics of multi-component high-entropy negative thermal expansion particles can effectively offset the thermal expansion of the aluminum alloy and significantly broaden the low thermal expansion temperature range of the composite material.

[0025] 2. The preparation process of the aluminum matrix composite material of the present invention is simple and the cost is low, which is suitable for large-scale production. The coefficient of thermal expansion can be reduced to 10.6×10 -6 / °C, which is about 55% lower than that of the matrix aluminum alloy, and maintains the good mechanical properties and processing properties of the aluminum alloy. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is the flow chart of the present invention;

[0027] Figure 2 is the Mn of the present invention 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x thermal expansion curve of the high-entropy alloy of the alloy;

[0028] Figure 3 is the XRD diffraction pattern of the aluminum alloy of the present invention and the low thermal expansion aluminum alloy of the present invention;

[0029] Figure 4 is the coefficient of thermal expansion diagram of the aluminum alloy of the present invention and the aluminum alloy composite material;

[0030] Figure 5 is the mechanical property diagram of the aluminum alloy of the present invention and the aluminum alloy composite material. DETAILED DESCRIPTION OF THE INVENTION

[0031] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments. These embodiments are only used to explain the present invention and do not constitute a limitation to the protection scope of the present invention.

[0032] Embodiment 1

[0033] According to Figure 1 , 2 , 3, 4, 5, this embodiment proposes a low thermal expansion aluminum matrix composite material reinforced by high-entropy alloy particles applicable to photovoltaic modules, which is composed of the following components:

[0034] Aluminum alloy powder (composed of matrix element aluminum and trace elements such as silicon, magnesium, and copper);

[0035] High-entropy Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x Giant negative thermal expansion alloy particles, where 0.25 ≤ x ≤ 0.40;

[0036] Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x The preparation method of the alloy particles is as follows:

[0037] Weigh the elements of Mn, Co, Ni, Ge, and Si according to the molar mass ratio, and prepare Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x alloy ingots, where 0.25 ≤ x ≤ 0.40. Measure the negative thermal expansion curves of each alloy component as shown in the appendix Figure 2 shown. The negative thermal expansion temperature ranges of each component of Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x are different, but the negative thermal expansion effects are continuous;

[0038] Put the alloy blocks obtained by mechanically crushing the Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x alloy ingots into a planetary ball mill, and ball mill for 2 - 3 hours according to the parameters of a ball-to-material ratio of 6 - 9:1 and a rotation speed of 80 - 100 r / min to obtain Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x alloy particles.

[0039] Mix four kinds of Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x alloy particles with aluminum alloy powder in different weight ratios in a ball mill, and ball mill for 1 - 2 hours according to the parameters of a ball-to-material ratio of 7 - 10:1 and a rotation speed of 90 - 110 r / min to make each alloy component evenly mixed.

[0040] Mix Mn in different proportions 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x Load the alloy particles / aluminum alloy powder mixed in different proportions into a mold, place it in a vacuum hot press furnace, evacuate the air, and perform vacuum hot pressing for 30 - 40 minutes under the conditions of 500 - 570 °C and 25 - 30 MPa, and then cool to room temperature to prepare the Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x alloy particle / aluminum alloy composite material.

[0041] X-ray diffraction (XRD) was performed on each alloy and composite material, as shown in the appendix Figure 3 It can be observed that as the addition proportion of Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x alloy increases, the characteristic diffraction peaks of the Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x alloy in the composite material gradually increase and strengthen.

[0042] Thermal expansion performance characterization was performed on the aluminum alloy composite materials with different proportions of added Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x alloy particles. The results are shown in the appendix Figure 4 It can be seen that as the proportion of high-entropy alloy particles increases, the thermal expansion coefficient of the aluminum alloy composite material gradually decreases, from the initial 23.5×10 -6 / °C to 10.6×10 -6 / °C, a decrease of approximately 54.6%.

[0043] As the addition proportion of Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x alloy particles in the aluminum alloy composite material increases, the tensile strength and yield strength also increase, and the ductility decreases to a certain extent, indicating that Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si xThe addition of the alloy has a strengthening effect on the aluminum alloy, and the results are as shown in the appendix Figure 5 as follows.

[0044] Example Two

[0045] According to Figure 1 、 2 、3, 4, 5, this example proposes the preparation of Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x alloy particles:

[0046] Weigh the elements of Mn, Co, Ni, Ge and Si according to the molar mass ratio (the element purity is greater than 99.9%), and prepare the Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x alloy ingot, where x = 0.29, 0.33, 0.36, 0.40. The negative thermal expansion curves of each alloy component are measured as shown in the appendix Figure 2 as follows. The negative thermal expansion temperature ranges of each component of Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x alloys are different, but the negative thermal expansion effect is continuous;

[0047] Put the alloy blocks obtained by mechanically crushing the Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x alloy ingot into a planetary ball mill, and ball mill for 2.5 hours according to the parameters of a ball-to-material ratio of 8:1 and a rotation speed of 90 r / min to obtain Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x alloy particles.

[0048] Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x Preparation of Mn

[0049] Prepare four kinds of Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si xThe alloy particles are mixed with pure aluminum or aluminum alloy powder in a ball mill at a weight ratio of 3 wt.%, and ball milled for 1.5 hours according to the parameters of a ball-to-material ratio of 10:1 and a rotation speed of 110 r / min to make the alloy components evenly mixed.

[0050] The mixed Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x The alloy particle / aluminum alloy powder is loaded into a mold and placed in a vacuum hot press furnace. After evacuating the air, vacuum hot pressing is carried out at 550 °C and 27 MPa for 35 minutes, and then cooled to room temperature to prepare the Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x alloy particle / aluminum alloy composite material. As shown in the appendix Figure 4 shown, the thermal expansion coefficient of this composite material is 19.6×10 -6 / °C.

[0051] Example 3

[0052] According to Figure 1 , 2 , 3, 4, 5 shown, this example proposes the preparation of Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x alloy particles:

[0053] Weigh the elements of Mn, Co, Ni, Ge and Si according to the molar mass ratio (the element purity is greater than 99.9%), and prepare the Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x alloy ingot, where x = 0.29, 0.33, 0.36, 0.40. The negative thermal expansion curves of each alloy component are measured as shown in the appendix Figure 2 shown. The negative thermal expansion temperature ranges of each component of Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x alloys are different but the negative thermal expansion effect is continuous;

[0054] The Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si xThe alloy ingot is mechanically crushed, and the resulting alloy blocks are placed in a planetary ball mill. Ball milling is carried out for 2.5 hours according to the parameters of a ball-to-material ratio of 8:1 and a rotation speed of 90 r / min to obtain Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x alloy particles.

[0055] Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x Preparation of the alloy / aluminum alloy composite material:

[0056] Four kinds of Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x alloy particles are mixed with pure aluminum or aluminum alloy powder in a ball mill according to a weight ratio of 6 wt.%. Ball milling is carried out for 1.5 hours according to the parameters of a ball-to-material ratio of 10:1 and a rotation speed of 110 r / min to make the alloy components evenly mixed.

[0057] The mixed Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x alloy particles / aluminum alloy powder are loaded into a mold and placed in a vacuum hot press furnace. The furnace is evacuated, and vacuum hot pressing is carried out at 550 °C and 27 MPa for 35 minutes, and then cooled to room temperature to prepare the Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x alloy particles / aluminum alloy composite material. As Figure 4 shown, the thermal expansion coefficient of this composite material is 16.4×10 -6 / °C.

[0058] Example 4

[0059] According to Figure 1 、 2 、3, 4, 5 shown, this example presents the preparation of Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x alloy particles:

[0060] Weigh the elements of Mn, Co, Ni, Ge, and Si according to the molar mass ratio (the purity of each element is greater than 99.9%), and prepare Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x alloy ingots, where x = 0.29, 0.33, 0.36, 0.40. The negative thermal expansion curves of each alloy component are measured as shown in the appendix Figure 2 shown. The negative thermal expansion temperature ranges of each component of Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x alloys are different, but the negative thermal expansion effect is continuous;

[0061] Put the alloy blocks obtained by mechanically crushing the Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x alloy ingots into a planetary ball mill, and ball mill for 2.5 hours according to the parameters of a ball-to-material ratio of 8:1 and a rotation speed of 90 r / min to obtain Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x alloy particles.

[0062] Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x Preparation of Mn

[0063] Mix four kinds of Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x alloy particles with pure aluminum or aluminum alloy powder in a ball mill according to a weight ratio of 10 wt.%, and ball mill for 1.5 hours according to the parameters of a ball-to-material ratio of 10:1 and a rotation speed of 110 r / min to make each alloy component evenly mixed.

[0064] Put the mixed Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x alloy particles / aluminum alloy powder into a mold, and put it into a vacuum hot press furnace, evacuate, and vacuum hot press at 550 °C and 27 MPa for 35 minutes, and then cool to room temperature to prepare Mn0.8 Co 0.4 Ni 0.8 Ge 1-x Si x Alloy particles / aluminum alloy composites, such as Figure 4 shown, the coefficient of thermal expansion of the composite material is 10.6×10 -6 / °C.

[0065] The preparation process of the aluminum matrix composite material of the present invention is simple, with low cost, suitable for large-scale production. The coefficient of thermal expansion can be reduced to 10.6×10 -6 / °C, which is reduced by about 55% compared with the matrix aluminum alloy, while maintaining the good mechanical properties and processing properties of the aluminum alloy. Moreover, the present invention adopts a vacuum hot pressing process to ensure the interfacial bonding strength, avoiding the segregation problem of the traditional casting method. The thermal shrinkage characteristics of the multi-component high-entropy negative thermal expansion particles can effectively offset the thermal expansion of the aluminum alloy and significantly broaden the low thermal expansion temperature range of the composite material.

[0066] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A low-thermal-expansion aluminum matrix composite material reinforced by high-entropy alloy particles and applicable to photovoltaic modules, characterized in that Comprising the following components: aluminum alloy powder, high-entropy Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x Giant negative thermal expansion alloy particles.

2. The low thermal expansion aluminum matrix composite material applicable to high-entropy alloy particle reinforcement of a photovoltaic module according to claim 1, wherein: The aluminum alloy powder is composed of matrix element aluminum and trace elements silicon, magnesium, and copper.

3. A low thermal expansion aluminum matrix composite material reinforced by high entropy alloy particles applicable to photovoltaic modules according to claim 1, characterized in that: The high-entropy Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x In the giant negative thermal expansion alloy particles, 0.25 ≤ x ≤ 0.

40.

4. A preparation method of a low thermal expansion aluminum matrix composite reinforced by high entropy alloy particles applicable to photovoltaic modules, characterized in that, It includes the following steps: S1: Weigh the elements of Mn, Co, Ni, Ge, and Si according to the molar mass ratio, and prepare the Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x alloy ingot; S2: Put Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x alloy ingot into a planetary ball mill after mechanical crushing to obtain Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x alloy particles; S3: Mix alloy particles of Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x with aluminum alloy powder in different weight ratios in a ball mill; S4: Load alloy particles / aluminum alloy powder with different mixing ratios into a mold, then perform vacuum hot pressing and cooling to obtain an Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x alloy particle / aluminum alloy composite material. 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x alloy particle / aluminum alloy composite.

5. The preparation method of a low thermal expansion aluminum matrix composite material reinforced by high entropy alloy particles applicable to photovoltaic modules according to claim 4, wherein: In S1, each component Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x The alloys have different negative thermal expansion temperature ranges but continuous negative thermal expansion effects.

6. The preparation method of a low thermal expansion aluminum matrix composite material reinforced by high entropy alloy particles applicable to photovoltaic modules according to claim 4, characterized in that: In S2, ball milling is carried out for 2 - 3 hours according to the parameters of a ball-to-material ratio of 6 - 9:1 and a rotation speed of 80 - 100 r / min to obtain Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x alloy particles.

7. The preparation method of a low thermal expansion aluminum matrix composite material reinforced by high-entropy alloy particles applicable to photovoltaic modules according to claim 4, characterized in that: In S3, during mixing, ball milling is carried out for 1-2 hours according to the parameters of a ball-to-material ratio of 7-10:1 and a rotation speed of 90-110 r / min, so that each alloy component is uniformly mixed.

8. The preparation method of a low thermal expansion aluminum matrix composite material reinforced by high entropy alloy particles applicable to photovoltaic modules according to claim 4, characterized in that: S4 includes the following steps: Mix Mn in different proportions 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x Load alloy particles / aluminum alloy powder into a mold; Put it into a vacuum hot press furnace and carry out vacuum hot pressing for 30-40 minutes under the conditions of 500-570 °C and 25-30 MPa; Cool to room temperature to obtain Mn 0.8 Co 0.4 Ni 0.8 Ge 1-x Si x alloy particle / aluminum alloy composite material.

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