Abstract
Al-Si-Cu-Mg cast aluminum alloys have important applications in automobile lightweight due to their advantages such as high strength-to-weight ratio, good heat resistance and excellent casting performance. With the increasing demand for strength and toughness of automotive parts, the development of high strength and toughness Al-Si-Cu-Mg cast aluminum alloys is one of the effective measures to promote the application of cast aluminum alloys in the automotive industry. In this paper, the research progress of improving the strength and toughness of Al-Si-Cu-Mg cast aluminum alloys was described from the aspects of multi-component alloying and heat treatment based on the strengthening mechanism of Al-Si-Cu-Mg cast aluminum alloys. Finally, the development prospects of automotive lightweight Al-Si-Cu-Mg cast aluminum alloys is presented.
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