A kind of mg-Al base alloy refinement modification agent and its preparation method and application
A technology for refining modifiers and base alloys, applied in the field of metal material processing, can solve the problems of poor plasticity and strength of as-cast alloys, poor heat treatment strengthening effect of alloys, and easy to grow thick, etc., and achieves improved plasticity and strength. Improve comprehensive mechanical properties and overcome the effect of coarse phase
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Embodiment 1
[0032] Take the rapidly solidified Al-2Ti-B-2Sr strip thinned 1KgAZ91D magnesium alloy as an example.
[0033] Preparation of rapidly solidified Al-2Ti-B-2Sr strips (taking 1Kg as an example):
[0034] 1), the 133gK 2 TiF 6 and 185gK 2 BF 6 Preheat in a drying oven at 100°C for 20 minutes;
[0035] 2) Put 975g of industrial pure aluminum into an intermediate frequency induction furnace and keep warm at 720°C until the pure aluminum is completely melted;
[0036] 3) Raise the temperature to 800°C, put the preheated K 2 TiF 6 and K 2 BF 6 Mix evenly and add to the aluminum melt;
[0037] 4) Heat up to 1000°C and hold for 10 minutes;
[0038] 5) Take 40g of pure strontium out of the kerosene within a few minutes before putting it into the aluminum melt, then clean it with acetone, wrap it tightly with aluminum foil and put it in a drying oven for preheating at 150°C for 3 minutes;
[0039] 6) Cool down to 900°C, add pretreated pure strontium and keep warm for 10 minute...
Embodiment 2
[0051] Take the rapidly solidified Al-5Ti-2B-8Sr strip thinned 1KgAM60B magnesium alloy as an example.
[0052] Preparation of rapidly solidified Al-5Ti-2B-8Sr strips (take 1Kg as an example):
[0053] 1), the 333gK 2 TiF 6 and 375gK 2 BF 6 Preheat in a drying oven at 100°C for 40 minutes;
[0054] 2) Put 875g of industrial pure aluminum into an intermediate frequency induction furnace and heat it at 720°C until the pure aluminum is completely melted;
[0055] 3) Raise the temperature to 900°C, put the preheated K 2 TiF 6 and K 2 BF 6 Mix evenly and add to the aluminum melt;
[0056] 4) Heat up to 1300°C and hold for 30 minutes;
[0057] 5) Take 160g of pure strontium out of the kerosene within a few minutes before putting it into the aluminum melt, then clean it with acetone, wrap it tightly with aluminum foil and put it in a drying oven for preheating at 150°C for 5 minutes;
[0058] 6) Cool down to 1000°C, add pretreated pure strontium and keep it warm for 30 minut...
Embodiment 3
[0069] Take the rapidly solidified Al-3Ti-1.5B-5Sr strip thinning 1KgAM60B magnesium alloy as an example.
[0070] Preparation of rapidly solidified Al-3Ti-1.5B-5Sr strips (take 1Kg as an example):
[0071] 1), the 180gK 2 TiF 6 and 281gK 2 BF 6 Preheat in a drying oven at 100°C for 30 minutes;
[0072] 2) Put 920g of industrial pure aluminum into an intermediate frequency induction furnace and keep warm at 720°C until the pure aluminum is completely melted;
[0073] 3) Raise the temperature to 850°C, put the preheated K 2 TiF 6 and K 2 BF 6 Mix evenly and add to the aluminum melt;
[0074] 4) Heat up to 1200°C and hold for 20 minutes;
[0075] 5) Take 100g of pure strontium out of the kerosene within a few minutes before putting it into the aluminum melt, then clean it with acetone, wrap it tightly with aluminum foil and put it in a drying oven for preheating at 150°C for 5 minutes;
[0076] 6) Cool down to 950°C, add pretreated pure strontium and keep it warm for ...
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