High-strength and high-toughness aluminum alloy wheel die forging and preparation method thereof
A high-strength, high-toughness, aluminum alloy technology, applied in the field of high-strength and high-toughness aluminum alloy wheel die forgings and their preparation, can solve the problem that the wheel cannot have high strength, high toughness at the same time, and cannot meet the high strength, high toughness, corrosion resistance, light weight of aluminum alloy materials. Quality requirements and other issues, to achieve the effect of excellent comprehensive mechanical properties, excellent elongation after fracture, and good performance of finished forgings
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Embodiment 1
[0030] A high-strength and high-toughness aluminum alloy wheel die forging, the element composition is: Si: 0.78%, Mg: 1.20%, Cu: 0.38%, Fe: 0.22%, Mn: 0.15%, Cr: 0.25%, Ti: 0.05% , Sc: 0.02% and the balance Al.
[0031] The specific preparation method is as follows:
[0032] (1) Weigh and mix according to the mass ratio of silicon nitride powder, nickel nitrate and ethanol as 30:2:15, stir magnetically for 30 minutes to obtain a mixed slurry, add 0.8% of the total amount of silicon nitride powder and nickel nitrate The polyvinylpyrrolidone, the mixed slurry was ball-milled for 10 hours, and the slurry was vacuum-dried after ball-milling. After the dried powder was left to stand for 20 hours, it was passed through a 200-mesh sieve, and then in a nitrogen atmosphere, 850-900 ° C, 2- Sintering at 3MPa for 2h, crushing and grinding again after sintering, and passing through a 200-mesh sieve to obtain a mixed powder;
[0033] (2) Preparation of aluminum alloy solution: Weigh pur...
Embodiment 2
[0046]A high-strength and high-toughness aluminum alloy wheel die forging, the element composition is: Si: 0.80%, Mg: 1.18%, Cu: 0.42%, Fe: 0.25%, Mn: 0.12%, Cr: 0.23%, Ti: 0.03% , Sc: 0.01%% and the balance Al.
[0047] The preparation method is the same as in Example 1.
Embodiment 3
[0049] A high-strength and high-toughness aluminum alloy wheel die forging, the element composition is: Si: 0.84%, Mg: 1.24%, Cu: 0.40%, Fe: 0.20%, Mn: 0.13%, Cr: 0.26%, Ti: 0.03%, Sc: 0.03% and the balance Al.
[0050] The preparation method is the same as in Example 1.
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