Preparation method of TiB2-Al composite material and TiB2-Al composite material
A composite material, tib2-al technology, applied in the field of composite materials, can solve problems that affect the thermal stability of parts that affect the dimensional stability of products, and achieve the effect of preventing nuclear accidents from escalating and ensuring safety redundancy
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[0036] refer to figure 1 , shows a schematic flow chart of the preparation method of the present invention. As shown in the figure, this embodiment includes the following steps:
[0037] 1. Preparation of Al-based metal melt
[0038] The material for preparing the Al-based metal melt in this embodiment can be industrial pure aluminum, or common aluminum alloys containing Cu, Mg, and Si. After the above materials are heated to melting, they are kept warm and blown into inert gas to refine and remove the slag to obtain the Al-based metal melt.
[0039] Among them, an aluminum alloy with a semi-solid range (such as ZL101 aluminum alloy) can be used to prepare an Al-based metal melt. The ZL101 aluminum alloy has excellent casting performance and a wide semi-solid temperature range. During preparation, the aluminum alloy is first heated to dissolve it completely, and then cooled to a semi-solid temperature range, so that a part of the phase inside the melt is solidified to form ...
Embodiment 1
[0059] Prepare 12 kg of TiB with an average particle size of 10 μm 2 The particles were kept at 400°C for 4 hours and then transferred to a vacuum oven at 120°C for storage. Prepare 18.5kg ZL101 alloy ingot, put it into the above-mentioned stirring container with an inner diameter of 400mm in the vacuum furnace for heating, the target temperature is 700°C, the drum does not rotate during the heating period, after 1 hour all the ZL101 alloy is melted, and the slag is refined by argon gas for about 0.5kg. Cool the above alloy slurry to 600°C within 30 minutes (the solidus of the material is 575°C, and the liquidus is 615°C), and at the same time, the stirring container starts to rotate at a speed of 30 revolutions / min, the purpose is to uniform the slurry temperature and avoid agglomeration or sinking of the primary solid phase.
[0060] Then 12kg of the aforementioned TiB 2 The particles are put into the slurry from the feeding port at a speed of 1kg / min, all TiB 2 After pu...
Embodiment 2
[0062] Prepare 18 kg of TiB with an average particle size of 5 μm 2 The particles were kept at 400°C for 6 hours and then transferred to a vacuum oven at 120°C for storage. Prepare 12.5kg ZL101 alloy ingot, put it into the above-mentioned stirring container with an inner diameter of 400mm in the vacuum furnace and heat it. The target temperature is 700°C. During the heating period, the drum does not rotate. 0.5kg. Cool the above alloy slurry to 590°C within 30 minutes, and at the same time, the stirring vessel starts to rotate at a rotation speed of 60 rpm, in order to uniform the temperature of the slurry and avoid agglomeration or bottom sinking of the primary solid phase.
[0063] Then 18kg of the aforementioned TiB 2 The particles are put into the slurry from the feeding port at a speed of 0.5kg / min, and all TiB 2 After putting in, continue to rotate the drum, increase the speed to 120 rpm, continue to stir for 120 minutes, pour the slurry into a rapidly cooled mold, an...
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