含Bi易切削黄铜的研究  

Bi-containing Free-cutting Brass

作　　者：闫静[1] 唐生渝 李文兵[1] 赵桢 沈保罗[1] 

机构地区：[1]四川大学 [2]四川莱特新材料责任有限公司

出　　处：《特种铸造及有色合金》2006年第4期240-241,共2页Special Casting & Nonferrous Alloys

摘　　要：无铅黄铜是以Bi来代替Pb,同时加入一定量的Mn元素来提高其性能。通过X衍射和扫描电镜分析发现,Bi呈薄膜和颗粒状存在于α相的晶界以及α和β的相界上;Mn部分固溶到基体中,起到固溶强化的作用。无论从力学性能上,还是从环保的角度,含Bi易切削黄铜完全可以取代HPb59-1。Bi is substituted for Pb in free-cutting brass Pb-free,meanwhile some Mn was added to improve the properties of the brass.Film-like or particle Bi exists in boundary of α phase and on phase interface of α and β phases by XRD and SEM observation.Partial Mn was solved into the matrix to strengthen the properties of the matrix alloy.Bi-containing free-cut brass can totally replace the Pb brass from the viewpoint of mechanical properties or environmental protection.

关 键 词：无Pb易切削黄铜 BI 显微组织 力学性能 

分 类 号：TG146.11[一般工业技术—材料科学与工程]