High-strength, high-toughness and heat-resistant aluminum alloy material for internal combustion engine and preparation method of aluminum alloy material
An aluminum alloy material, high-strength and toughness technology, which is applied in the field of high-strength, toughness and heat-resistant aluminum alloy materials for internal combustion engines and its preparation field, can solve the problems of poor creep resistance and fatigue properties at high temperature, coarse structure of aluminum alloy materials, and less high temperature strengthening. , to achieve the effect of good thermal fatigue resistance, uniform structure distribution, and improved high temperature performance
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[0035] Example 1
[0036] A high-strength and heat-resistant aluminum alloy material for internal combustion engines, specifically composed of the following elements by weight percentage: Si: 17.0wt%, Cu: 2.0wt%, Ni: 1.5wt%, Mg: 0.6wt%, Fe: 0.4 wt%, Cr: 0.4wt%, Zr: 0.3wt%, Ti: 0.3wt%, Sc: 0.3wt%, B: 0.15wt%, C: 0.1wt%, P: 0.08wt%, rare earth element RE: 0.4 wt%, the balance is Al.
[0037] A method for preparing the above-mentioned high-strength and heat-resistant aluminum alloy material for internal combustion engines specifically includes the following steps:
[0038] S1. Mix potassium fluoroborate, potassium fluorotitanate, and sodium fluoroaluminate in a weight ratio of 8:8:1, then vacuum ball milling for 1 hour, and then place in a mold for cold pressing to obtain briquette 1; , Titanium powder and aluminum powder are mixed in a weight ratio of 1:4:3, followed by vacuum ball milling for 8 hours, and then placed in a mold for cold pressing to obtain briquette 2;
[0039] S2. Melt t
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[0043] Example 2
[0044] A high-strength and heat-resistant aluminum alloy material for internal combustion engines, specifically composed of the following elements by weight percentage: Si: 9.0wt%, Cu: 7.0wt%, Ni: 5.5wt%, Mg: 1.0wt%, Fe: 0.6 wt%, Cr: 0.6 wt%, Zr: 0.2 wt%, Ti: 0.2 wt%, Sc: 0.2 wt%, rare earth element RE: 0.5 wt%, B: 0.3 wt%, C: 0.2 wt%, P: 0.1 wt%, the balance is Al.
[0045] A method for preparing the above-mentioned high-strength and heat-resistant aluminum alloy material for internal combustion engines specifically includes the following steps:
[0046] S1. Mix potassium fluoroborate, potassium fluorotitanate, and sodium fluoroaluminate in a weight ratio of 8:8:1, then vacuum ball milling for 2 hours, and then place them in a mold for cold pressing to obtain briquettes 1; , Titanium powder and aluminum powder are mixed in a weight ratio of 1:4:3, followed by vacuum ball milling for 9 hours, and then placed in a mold for cold pressing to obtain briquette 2;
[0047]
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[0051] Example 3
[0052] A high-strength and heat-resistant aluminum alloy material for internal combustion engines, specifically composed of the following elements by weight percentage: Si: 13.0wt%, Cu: 4.0wt%, Ni: 3.5wt%, Mg: 1.5wt%, Fe: 1.1 wt%, Cr: 1.1wt%, Zr: 0.1wt%, Ti: 0.1wt%, Sc: 0.1wt%, RE: 0.6wt%, B: 0.5wt%, C: 0.3wt%, P: 0.12 wt%, the balance is Al.
[0053] A method for preparing the above-mentioned high-strength and heat-resistant aluminum alloy gold material for internal combustion engines specifically includes the following steps:
[0054] S1. Mix potassium fluoroborate, potassium fluorotitanate, and sodium fluoroaluminate in a weight ratio of 8:8:1, then vacuum ball milling for 3 hours, and then place them in a mold for cold pressing to obtain briquettes 1; , Titanium powder and aluminum powder are mixed in a weight ratio of 1:4:3, then vacuum ball milling for 10 hours, and then placed in a mold for cold pressing to obtain briquette 2;
[0055] S2. Melt the pure alumin
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