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Process for improving the mechanical properties of die-cast parts made of an aluminum alloy
Process for improving the mechanical properties of die-cast parts made of an aluminum alloy
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机译：改善由铝合金制成的压铸部件的机械性能的方法
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摘要
A method of improving a mechanical property of an aluminum alloy die casting, the method comprising: forcing a molten aluminum alloy composition under high pressure into a die casting mold, the aluminum alloy composition containing at least one of magnesium, copper, silicon and zinc; solidifying the aluminum alloy composition in the die casting mold in order to form a die casting from the aluminum alloy, cooling the casting in the die casting mold to a quenching temperature between 300 ° C and 500 ° C, quenching the casting in a quenching medium immediately after the casting has reached the quenching temperature and performing a multi-step hardening process after the Quenching the casting, the multi-step hardening process comprising: pre-hardening the casting at a reduced temperature between room temperature and 100 ° C. for at least 2 hours and hardening the casting with we at least one isothermal hardening at a higher temperature than the reduced temperature, the hardening being carried out after the pre-hardening, wherein the mechanical property comprises at least one of strength, hardness and toughness, and wherein the method does not comprise a solution treatment.
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