Novel high strength Al-10.5Si-3.4Cu-0.2Mg alloy produced through two-stage solution heat treatment

作者: Saeed G. Shabestari , Mohsen Abdi

DOI: 10.1016/S1003-6326(21)65520-6

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摘要: Abstract Mechanical properties of aluminum-silicon-copper alloys are enhanced through precipitation hardening. The response these to age-hardening is very slow. To overcome this problem, 0.2, 0.4 and 0.7 wt.% magnesium were added Al-10.5Si-3.4Cu alloy. new subjected two types hardening processes different in the solutionizing stage. results showed that presence various amounts composition alloy accelerates ageing treatments, increasing hardness strength. Higher mechanical can be achieved when a two-stage solution heat treatment. It found containing 0.2 Mg treated process, has optimum with ultimate tensile strength 383.9 MPa, yield 289.7 MPa elongation 3.97%, used as substitute for large number aluminum castings which need high excellent castability.

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