A kind of micro-nano particle reinforced aluminum matrix composite material and preparation method thereof
A technology of micro-nano particles and reinforced aluminum base, applied in reactors, nuclear engineering, shielding, etc., can solve problems such as poor mechanical properties, and achieve good thermodynamic stability, uniform distribution, and stable mechanical properties
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Embodiment 1
[0030] This embodiment discloses a micro-nano particle reinforced aluminum matrix composite material, and its components and their mass percentages are: micron B 4 C particles 10wt%, nano B 4 C particles are 1wt%, and the rest are 6061Al alloy.
[0031] The preparation method of the micro-nano particle reinforced aluminum matrix composite material of the present embodiment includes the following steps:
[0032] (1) Set the average particle size to 7 μm B 4 C particles with an average particle size of 80 nm B 4 The C particles were mixed on a ball mill, and the mixing parameters were as follows: the speed of the ball mill was 150 rpm, the ball-to-material ratio was 10:1, and the ball milling time was 12 h.
[0033] (2) Putting the above mixture into a sintering furnace to complete cold pressing, so that the density of the cold compact is 70% to 80%.
[0034] (3) Turn on the mechanical pump and the molecular pump respectively, and exhaust the furnace cavity. When the vacuum ...
Embodiment 2
[0039] This embodiment discloses a micro-nano particle reinforced aluminum matrix composite material, and its components and mass percentages are: micron B 4 C particles are 15wt%, nano-SiC particles are 0.5wt%, and the rest are 6061Al alloy. The specific preparation method is:
[0040] (1) Set the average particle size to 7 μm B 4 C particles with an average particle size of 60 nm SiC particles were mixed on a ball mill. The mixing parameters were as follows: the ball mill speed was 160 rpm, the ball-to-material ratio was 10:1, and the ball milling time was 12 h.
[0041] (2) Putting the above mixture into a sintering furnace to complete cold pressing, so that the density of the cold compact is 70% to 80%.
[0042] (3) Turn on the mechanical pump and the molecular pump respectively to exhaust the furnace cavity. When the vacuum degree is less than 1×10 -3 Pa, start the heating power source to heat the above-mentioned cold briquette, and the heating rate is 5K / min. When th...
Embodiment 3
[0046] This embodiment discloses a micro-nano particle reinforced aluminum matrix composite material, and its components and mass percentages are: micron B 4 C particles 10wt%, nano B 4 C particles are 1wt%, and the matrix is 2024Al alloy.
[0047] The specific preparation method is:
[0048] (1) Set the average particle size to 7 μm B 4 C particles with an average particle size of 80 nm B 4 The C particles were mixed on a ball mill, and the mixing parameters were as follows: the ball mill rotation speed was 150 rpm, the ball-to-material ratio was 10:1, and the ball milling time was 12 h.
[0049] (2) Putting the above mixture into a sintering furnace to complete cold pressing, so that the density of the cold compact is 70% to 80%.
[0050] (3) Turn on the mechanical pump and the molecular pump respectively to exhaust the furnace cavity. When the vacuum degree is less than 1×10 -3 Pa, start the heating power source to heat the above-mentioned cold briquette, and the hea...
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Abstract
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