Microstructure and properties of unleaded free-cutting brass containing stibium

摘要：

A new environmental friendly cutting brass containing stibium instead of lead was produced by casting and rolling.The microstructure was observed and the mechanical,dezincification and cutting properties were studied.The results show that the white particles distribute in both grains and grain boundaries,and the particles are mainly intermetallics containing stibium.The tensile strength,yield strength and elongation percentage of half-hard Sb-brass is 461.72 MPa,213.3 MPa and 15.67％,respectively.Corresponding to HPb59-1 by the size as well as appearance of the chips and the mechanism of free-cutting,the cutting property of unleaded free-cutting Sb-brass is excellent.The unleaded Sb-brass has excellent dezincification corrosion resistance,and the average depth of longitudinal section is about 295.4 μm,while the average depth of lateral section is about 214.7 μm,and it is feasible to develop a new unleaded free-cutting Sb-brass.

关键词： nonleaded free-cutting brass stibium microstructure property

作者: XIAO Lai-rong SHU Xue-peng YI Dan-qing ZHANG Xi-min QIN Jing-li HU Jia-rui

作者单位: School of Materials Science and Engineering,Central South University,Changsha 410083,China;The Key Laboratory of Non-ferrous Metals,Materials Science and Engineering,Ministry of Education;Changsha 410083;China

会议类型: 国际会议

会议名称: 2007年国际有色金属大会(International Conference of Nonfereous Materials 2007)(ICNFM)

会议地点: 长沙

会议语种:英文

在线出版日期: 2007-11-28（万方平台首次上网日期，不代表论文的发表时间）