比压对液态模锻铍青铜件组织和性能的影响  

Effect of Pressure on Microstructure and Properties of Beryllium Bronze Formed by Molten Metal Die Forging(MMDF)

作　　者：邢书明[1] 高文静 鲍培玮[1] 闫光远 韩亮 杨景华 高颖 XING Shuming;GAO Wenjing;BAO Peiwei;YAN Guangyuan;HAN Liang;YANG Jinghua;GAO Ying(School of Mechanical,Electronic and Control Engineering,Beijing Jiaotong University,Beijing 100064,China;Hebei Safety Tool Industry Technology Research Institute,Hebei Cangzhou 062150,China;Hebei Botou Safety Tools Co.,Ltd.,Hebei Cangzhou 062150,China)

机构地区：[1]北京交通大学机械与电子控制工程学院,北京100044 [2]河北省安全工具产业技术研究院,河北沧州062150 [3]河北中泊防爆工具集团有限公司,河北沧州062150

出　　处：《精密成形工程》2024年第4期165-171,共7页Journal of Netshape Forming Engineering

基　　金：国家自然科学基金(510327);中央高校科研业务费专项课题(2020YJS146)。

摘　　要：目的针对先铸坯再模锻方法工艺流程长、能耗高、成本高的缺点,将液态模锻工艺应用于铍青铜件的成形制造中,以提高零件的成形质量、降低成本和能耗。方法在工业生产条件下,对比研究了主要工艺参数比压对液态模锻铍青铜件试样拉伸性能、冲击性能、硬度及晶粒特征的影响规律。结果当液锻比压从40 MPa提高至80 MPa时,液锻铍青铜的晶粒尺寸可以细化至65μm以下,抗拉强度提高了150 MPa,伸长率由20%提高至40%,硬度和冲击韧性分别提高了35HBW和20 J/cm^(2)。结论液锻比压是影响铍青铜液锻件组织和性能的关键因素,随着液锻比压的增大,液锻铍青铜件晶粒被显著细化,强度、塑性、硬度和冲击韧性均得到显著提高。The work aims to apply the Molten Metal Die Forging(MMDF)process in the forming of beryllium bronze casting parts to deal with the defects of long process flow,high energy consumption and high cost,improve the forming quality,reduce costs and energy consumption.In this paper,the effects of the specific pressure of the main process parameters on the tensile properties,impact properties,hardness and grain characteristics of MMDF beryllium bronze specimens were studied under industrial production conditions.When the specific pressure used in the MMDF was increased from 40 MPa to 80 MPa,the grain size of beryllium bronze could be refined to less than 65μm,the strength was increased by 150 MPa,the elongation was increased from 20%to 40%,the hardness was increased by 35HBW,and the impact toughness was increased by 20 J/cm^(2).It is experimentally proved that the specific pressure is a key factor affecting the microstructure and properties of beryllium bronze by MMDF,and that with the increase of the specific pressure,the grains of beryllium bronze parts are significantly refined,and the strength,plasticity,hardness,and impact toughness are significantly improved.

关 键 词：铍青铜 液态模锻 比压 显微组织 力学性能 

分 类 号：TG316.3[金属学及工艺—金属压力加工]