以Cu-Zn合金为基础系,添加其它微量元素,通过正交实验优化成分设计,研制一种新型的无铅易切削黄铜,并进行金相分析、X射线衍射、切削性能分析。结果表明,在Cu-Zn合金系中加入微量的硅、磷、铝和镧,能够在以β相为基体的组织中形成脆硬的γ相,正是这些γ相均匀的分布在合金组织中,使合金不仅具有良好的力学性能,而且在切削过程中起到了切削时断屑的作用。 Based on the Cu-Zn alloy, other trace elements were added, and a new type of lead free cutting brass was developed by orthogonal experimental design. The metallographic analysis, X-ray diffraction and cutting performance were also studied. The results show that adding a trace amount of silicon, phosphorus, aluminum and lanthanum in the Cu-Zn alloy system can form a brittle γ phase in the β-phase matrix, and these γ phases are uniformly distributed in the alloy structure , So that the alloy not only has good mechanical properties, but also play a cutting chip cutting role in the cutting process.