Aiming at the technical problem that the mechanical properties of the ZL201A aluminum alloy could not meet the design and acceptance requirements during the trial production of a certain type of product,combining with the performance characteristics of the ZL201A binary alloy and the actual production experience,through the formulation of a reasonable heat treatment process plan,the effect of different heat treatment temperatures and time on the microstructure and properties of the ZL201A aluminum alloy under the condition of two-stage solid solution was investigated.The results show that with 535 ℃ ×9h+545℃×9 h two-stage solid solution treatment and 160℃x 6 h aging,the ZL201A aluminum alloy demonstrates best comprehensive mechanical properties with tensile strength 389 MPa,yield strength 342 MPa and elongation 11.5％.The testing results not only meet the technical requirements of product design acceptance,but also accumulate effective practical data for the subsequent material engineering application and system research.
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