Si、Mg含量对A356铝合金车轮性能的影响

Influence of Si and Mg Content on the Performance of A356 Al Alloy Wheels

为了研究不同Si、Mg含量对A356铝合金车轮的性能的影响,在经T6处理后的不同Si、Mg含量A356铝合金车轮外轮缘取拉伸试棒,进行力学性能测试,并进行了成品车轮的抗冲击试验和弯曲疲劳试验。试验结果表明:Mg含量变化对合金的性能影响大于Si含量变化;当Si含量为7%、Mg含量为0.32%时,成品车轮的抗冲击性能和抗弯曲疲劳性能最好。

The influence of different content of Si and Mg on the performance ofA356 AI alloy wheels was studied, the tests of mechanical properties were conducted with outer flange tensile test bars on A356 A1 alloy wheels with different content of Si and Mg after T6 heat treatment. Also, the impact test and bending fatigue test were conducted to the wheels. According to the test results, the change of Mg content has more influence on alloy performance than Si content; when there is 7% Si and 0.32% Mg in a wheel, its performance of impact resistance and bending fatigue resistance is the best.