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ARTIFICIAL AGING PROCESS FOR ALUMINUM-SILICON (AlSi) ALLOYS FOR DIE CAST COMPONENTS
ARTIFICIAL AGING PROCESS FOR ALUMINUM-SILICON (AlSi) ALLOYS FOR DIE CAST COMPONENTS
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机译:压铸件用铝硅合金的人工时效工艺
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摘要
Provided is a method of heat treating a die cast aluminum alloy component. A die cast component has at least one thin walled region with a thickness of ≤5 mm. The alloy has silicon at ≥6.5 mass % to ≤15.5 mass %, copper at ≥0.1 mass % to ≤3.5 mass %, magnesium at ≤0.5 mass %, manganese at ≤0.6 mass %, and chromium at ≤0.6 mass %. The method includes quenching the die cast component at a cooling rate of ≥ about 100° C./second to a first temperature of less than 50° C. and age hardening by heating the die cast component to a second temperature of ≥ about 150° C. for a predetermined duration of time to facilitate formation of particles of Mg2Si in an aluminum alloy matrix. The aluminum alloy treated by the method can form lightweight, high strength, high ductility components.
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