摘要
通过熔铸方法,于中频感应炉中制备无铅磷钙黄铜铸锭,利用扫描电镜、电子能谱仪、电子万能试验机及卧式车床等手段,研究磷钙黄铜合金的显微组织和力学、切削及耐脱锌腐蚀性能,并结合切屑的形貌观察,分析金属间化合物对切削性能的改善作用。结果表明：磷、钙显著改变了黄铜的组织与性能,使得磷钙黄铜的组织由α相、β相和分布在晶界上及晶粒内的金属间化合物颗粒组成;无铅磷钙黄铜合金的主要成分（质量分数）为57%~60%Cu、40%Zn、0.7%P、0.5%Ca时,合金显示出优良的综合性能,其抗拉强度为362.7 MPa,伸长率为15.0%,布氏硬度为105.0HB,耐脱锌腐蚀深度为321.9μm,切削性能与铅黄铜HPb59-1相当。
The ingots of P-Ca brass were prepared in a medium frequency induction furnace through scientific casting process. The microstructure and mechanical, cutting and dezincification corrosion-resistance properties of P-Ca brass were studied by scanning electron microscopy （SEM）, energy dispersive spectrometer（EDS）, electron universal test machine and lathe, the effect of the intermetallics on the cutting performance was also studied through the observation of chips. The results show that, P and Ca change the microstructure and properties of brass alloys significantly, making the microstructure of P-Ca brass composed of a, β and intermetallic compounds dispersed on grain boundaries and in grains. The reasonable contents （mass fraction） of main elements are 57%-60% Cu, 40% Zn, 0.7% P and 0.5% Ca. The brass alloy containing this component has good performances as follows： tensile-strength of 362.7 MPa, elongation of 15.0%, Brinell hardness of 105.0HB, dezincification depth of 321.9 μm, and the cutting property is as well as that of HPb59-1.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2012年第5期1421-1429,共9页
The Chinese Journal of Nonferrous Metals
