A high-strength and high-toughness aluminum alloy wheel die forging and its preparation method
A high-strength, high-toughness, aluminum alloy technology, applied in the field of high-strength, high-toughness aluminum alloy wheel die forgings and its preparation, can solve the problem that the aluminum alloy material cannot meet the requirements of high strength, high toughness, corrosion resistance, and light weight, and the wheel cannot have high strength at the same time , high toughness and other issues, to achieve the specified non-proportional elongation strength and elongation after break performance, excellent comprehensive mechanical properties, and good surface quality
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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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