Si、P含量对无铅黄铜组织和性能的影响  

Effect of Si and P content on microstructure and properties of lead-free brass

作　　者：王娟 刘平[1] 刘新宽[1] 陈小红[1] 李伟[1] 马凤仓[1] 何代华[1] 张柯[1] WANG Juan;LIU Ping;LIU Xinkuan;CHEN Xiaohong;LI Wei;MA Fengcang;HE Daihua;ZHANG Ke(School of Materials Science and Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学材料科学与工程学院,上海200093

出　　处：《功能材料》2018年第11期11194-11199,共6页Journal of Functional Materials

摘　　要：利用中频感应炉制备无铅硅磷黄铜,采用金相显微镜、扫描电子显微镜分析了合金的显微组织;通过拉伸试验、切削试验研究了硅、磷含量变化对合金力学性能及切削性能的影响。结果表明,随着Si含量的降低,合金的硬度、切削性能逐渐降低,延伸率逐渐升高,其中Si含量从2.5%～2.0%时,硬度降低趋势最为显著,从刀具寿命考虑,需将Si含量降至2.0%及其以下;2.0%Si+0.3%P既保持了切削性能,又因其硬度低,减小刀具磨损,提高刀具寿命,获得切削性能与刀具寿命的结合。The lead free silicon phosphorus brass was prepared by medium frequency induction furnace. The microstructure of the alloy was analyzed by metallographic microscope and scanning electron microscope, and the influence of the change of silicon and phosphorus content on the mechanical properties and cutting properties of the alloy was studied by tensile test and cutting test. The results show that with the decrease of Si content, the hardness and cutting properties of the alloy gradually decrease, and the elongation increases gradually. In the case of Si content from 2.5% to 2%, the trend of hardness reduction is the most significant. From the tool life, the Si content should be reduced to 2% and below, and 2.0%Si＋0.3%P not only maintains the cutting performance, but also has low hardness. It can reduce tool wear and improve tool life, getting the combination of cutting performance and tool life.

关 键 词：硅含量 磷含量 无铅黄铜 显微组织 性能 

分 类 号：TG146.1[一般工业技术—材料科学与工程]