Preparation method of aluminum-zinc-magnesium-copper-zirconium series high-strength aluminum alloy
A technology of aluminum zinc magnesium and aluminum alloy, which is applied in the field of light-weight high-performance structural aluminum alloy materials and powder metallurgy, can solve the problems of cumbersome preparation process, coarse grain, low solid solubility, etc. The effect of low production rate and simple production process
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[0022] Example 1
[0023] The chemical composition of the experimental alloy is: Al-6.5Zn-2.1Mg-2.1Cu-0.17Zr (mass fraction), the alloy ingredients are 10μm copper powder, 2μm aluminum powder, 20μm magnesium powder, 6~9μm zinc powder and 2~3μm zirconium powder . The element powder is ball milled on a light ball mill at a speed of 150 revolutions per minute for 24 hours, and the composite material is sintered in a vacuum hot pressing sintering furnace at low temperature and high pressure, with a vacuum degree of ≤0.01Pa, a sintering temperature of 550°C, and a sintering time of 3h , The sintering pressure is 80MPa, and the sintered body sintered by low temperature and high pressure vacuum hot pressing is subjected to high temperature solution heat treatment, the temperature is 620 ℃, the vacuum degree is ≤ 0.01 Pa, and the sintering time is 12 h. The sintered sample is subjected to hot extrusion and extrusion The preheating temperature of the Qianqian die is 480℃, the extrusion r...
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[0024] Example 2
[0025] The chemical composition of the experimental alloy is: Al-6.1Zn-2.1Mg-1.6Cu-0.25Zr (mass fraction), the alloy ingredients are 10μm copper powder, 10μm aluminum powder, 20μm magnesium powder, 6~9μm zinc powder and 2~3μm zirconium powder . The element powder is ball milled on a light ball mill at a speed of 250 revolutions per minute for 36 hours. The composite material is sintered in a vacuum hot pressing sintering furnace at low temperature and high pressure, with a vacuum degree of ≤0.01 Pa, a sintering temperature of 550°C, and a sintering time of 2 hours. , The sintering pressure is 60MPa, and the sintered body sintered by low temperature and high pressure vacuum hot pressing is subjected to high temperature solution heat treatment, the temperature is 600 ℃, the vacuum degree is less than 0.01 Pa, and the sintering time is 5h. The sintered sample is subjected to hot extrusion and extrusion The preheating temperature of the Qianqian die is 480℃, the e...
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[0026] Example 3
[0027] The chemical composition of the experimental alloy is: Al-5.0Zn-1.7Mg-2.1Cu-0.25Zr (mass fraction), the alloy ingredients are 10μm copper powder, 10μm aluminum powder, 20μm magnesium powder, 6~9μm zinc powder and 2~3μm zirconium powder . The element powder is balled on a light ball mill at a speed of 250 revolutions per minute for 36 hours. The composite material is sintered in a vacuum hot pressing sintering furnace at low temperature and high pressure. The vacuum degree is ≤0.01Pa, the sintering temperature is 550°C, and the sintering time is 4 hours. , The sintering pressure is 60MPa, the sintered body sintered by low temperature and high pressure vacuum hot pressing is subjected to high temperature solution heat treatment, the temperature is 610 ℃, the vacuum degree is less than or equal to 0.01 Pa, and the sintering time is 8 hours. The sintered sample undergoes hot extrusion and extrusion The preheating temperature of the Qianqian die is 480℃, the...
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