高强耐磨稀土高锰黄铜的组织与性能  

Structure and properties of high manganese brass with high strength and wear-resistant

作　　者：孙永辉[1,2] 汪明朴[1] 李周[1] 胡萍霞 

机构地区：[1]中南大学材料科学与工程学院,长沙410083 [2]中铝洛阳铜业有限公司技术中心,河南洛阳471039

出　　处：《有色金属科学与工程》2016年第4期61-66,共6页Nonferrous Metals Science and Engineering

基　　金：国家自然科学基金资助项目(51271203)

摘　　要：设计一种用于制造同步器齿环的CuZnMnAlSiFeCeB复杂黄铜合金,利用水平连铸,热挤压和快速水冷的工艺制备合金型材.利用金相显微镜和扫描电镜以及能谱分析的手段研究合金的铸态组织,挤压态组织.合金铸态组织均匀,无气孔和夹杂等缺陷.挤压淬火态合金组织为β+少量α+均匀分布强化相.合金挤压淬火后的性能为抗拉强度783MPa,断后伸长率5.89%.A CuZnMnAlSiFeCeB alloy for making the synchronizer closed-ring was designed using horizontal continuous casting, hot-extrusion and quenching with water spray. The as-casting and as-extrusion microstruc- tures of the alloy were observed using optical microscope and scanning electron microscope with EDS. The resuits show that the as-casting microstructure is homogeneous with no air hole and inclusion. The as-extrusion microstructure of the alloy is composed of matrix of β phase with a little of α phase and strengthening phase. The tensile strengthen of the alloy after extrusion quenching is 783 MPa and the elongation is 5.89 %.

关 键 词：高锰黄铜 同步器齿环 强化相 Α相 抗拉强度 

分 类 号：TG146.11[一般工业技术—材料科学与工程] TF125.211[金属学及工艺—金属材料]