关键词: AlSi10MnMg；车身轻量化；前减震器塔

Abstract: Vehicle body lightweight technology is currently the most core and critical lightweight path solutions, including structural lightweight, material lightweight, and process lightweight three categories of technologies. AlSi10MnMg aluminum alloy is an important applica- tion direction in material lightweight. Because it can obtain different ranges of mechanical properties and extremely excellent casting properties through different heat treatments, it has become the most common high-strength and tough die-casting alloy used in automotive structural parts. This article provides a detailed introduction to the AlSi10MnMg aluminum alloy material and its properties. The results show that the T5/T7 heat treatment states of the aluminum alloy are suitable for solid parts, such as solid mounting plates; The T7 state is suitable for thin-walled components, with the most typical components being the front shock absorber tower, rear shock absorber tower, and rear longitudinal beam. Finally, the design of the appearance, manufacturing process, and heat treatment system is carried out using the previous shock absorber tower as an example, which can provide reference for the design and development of front shock absorber towers for other vehicle models.

Key words: AlSi10MnMg; Body Lightweight; Front shock tower