The microstructure and mechanical properties of minor Sn alloying lead-free and free-cutting Al-Mg-Si alloy rod with different treatments were investigated using mechanical property test,XRD analysis,SEM and TEM.

• 采用力学性能测试、X射线衍射物相分析、扫描电子显微分析、透射电镜分析和金相实验方法研究了不同处理态Sn微合金化的无铅易切削Al-Mg-Si合金棒材的显微组织与性能。