A production process for in-situ generation of zirconium boride particles reinforced aluminum-silicon matrix composites
A silicon-based composite material and particle-reinforced aluminum technology are applied in the field of aluminum-based composite materials to achieve the effects of uniform distribution, good bonding, and reasonable production process steps.
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Embodiment 1
[0029] Embodiment 1 (0.5wt.% forms ZrB 2 Particle reinforced Al-15Si matrix composites)
[0030] Put pure Al into a melting furnace, heat to 900-1000°C to melt, then add pure Si with a mass fraction of 15% (the ratio of the mass of pure silicon to the sum of the mass of pure silicon and pure aluminum), and stir evenly after melting;
[0031] The Al-15Zr and Al-3B master alloys (the molar ratio of zirconium to boron is 2.75:1, and the addition of zirconium in the aluminum-silicon matrix composite material in situ generated zirconium boride particles is 2.21%) were successively added to the aluminum-silicon melt After melting, stir for 2-5 minutes, add refining agent, keep warm for 10 minutes, after slag breaking, keep warm to 850-950°C before pouring;
[0032] The prepared composite material was put into a resistance box furnace for solution and aging heat treatment. The solution temperature was 550°C for 16 hours, and the aging temperature was 175°C for 4 hours.
[0033] The...
Embodiment 2
[0034] Embodiment 2 (0.5wt.% forms ZrB 2 Particle reinforced Al-20Si matrix composite material)
[0035] Put pure Al into a smelting furnace, heat to 900-1000°C to melt, then add pure Si with a mass fraction of 20%, and stir evenly after melting;
[0036] The Al-15Zr and Al-3B master alloys (the molar ratio of zirconium to boron is 2.75:1, and the addition of zirconium in the aluminum-silicon matrix composite material in situ generated zirconium boride particles is 2.21%) were successively added to the aluminum-silicon melt After melting, stir for 2-5 minutes, add refining agent, keep warm for 10 minutes, after slag breaking, keep warm to 850-950°C before pouring;
[0037] The prepared composite material was put into a resistance box furnace for solution and aging heat treatment. The solution temperature was 550°C for 20 hours, and the aging temperature was 175°C for 4 hours.
[0038] The as-prepared 0.5 wt.% ZrB was formed in situ 2 The room temperature flexural strength o...
Embodiment 3（1
[0039] Embodiment 3 (1wt.% forms ZrB 2 Particle reinforced Al-30Si matrix composites)
[0040] Put pure Al into the melting furnace, heat to 900-1000°C to melt, then add pure Si with a mass fraction of 30%, stir evenly after melting;
[0041] The Al-15Zr and Al-3B master alloys were successively added to the aluminum melt according to the mass ratio of 2.85:1, and the in-situ generated zirconium boride particles reinforced the component zirconium in the aluminum-silicon matrix composite material. The addition amount was 4.57%. ;Stir for 2~5 minutes after all the melting, add refining agent, keep warm for 10 minutes, heat it up to 850~950°C after slag removal, and then pour;
[0042] The prepared composite material was put into a resistance box furnace for solution and aging heat treatment. The solution temperature was 550°C for 24 hours, and the aging temperature was 175°C for 4 hours.
[0043] The as-prepared 1wt.% ZrB was formed in situ 2 The room temperature flexural str...
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Abstract
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