Effect of heat treatment on microstructure and mechanical properties of ZL201A aluminum steel shell with counter-pressure casting

doi:10.13251/j.issn.0254-6051.2024.03.018

Abstract

Abstract: 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 ℃×9 h+545 ℃×9 h two-stage solid solution treatment and 160 ℃×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.

Key words: ZL201A aluminum alloy, counter-pressure casting, solution treatment, aging, mechanical properties

CLC Number:

TG166.3

Wang Yayong, Cao Xijuan, Ren Guangxiao, Liu Yongzhe, Zheng Yunkai. Effect of heat treatment on microstructure and mechanical properties of ZL201A aluminum steel shell with counter-pressure casting[J]. Heat Treatment of Metals, 2024, 49(3): 108-111.

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