变形高铅黄铜具有良好的力学和物理性能及优良的切削加工性能,在机械、钟表和制笔等部门得到广泛应用,特别适宜于深孔加工零件。但该类合金热加工性能差,热变形易开裂,成材率低。试验表明,添加微量稀土可提高合金的高温塑性,显著改善热加工性能,从而提高成材率。鉴于稀土元素在合金中的存在形式及作用机理至今仍未搞清,本文着重对高铅黄 Deformed high-lead brass has good mechanical and physical properties and excellent cutting performance, widely used in machinery, watches and pens and other departments, especially for deep hole processing parts. However, such alloys poor thermal processing, easy to crack thermal deformation, low yield. Experiments show that adding trace rare earth can improve the high temperature plasticity of the alloy, significantly improve the hot workability, thereby improving the yield. In view of the existence of rare earth elements in the alloy form and mechanism has not yet clear, this article focuses on the high lead yellow