脱氧剂Cu-10P对真空熔铸Cu-10Sn-3Pb-4Ni合金微观组织和力学性能的影响  

Effect of a Cu-10P Deoxidizer on the Microstructure and Mechanical Properties of Cu-10Sn-3Pb-4Ni Alloy Prepared by Vacuum Induction Melting

作　　者：娄健明 张建平 汤子生 苏伊桐 邹军涛 n MeltingLOU Jianming;ZHANG Jianping;TANG Zisheng;SU Yitong;ZOU Juntao(Qing'an Group Co.,Ltd.,Xi'an 710077,China;Xi'an Zhitong Automation Technology Development Company,Xi'an 710048,China)

机构地区：[1]庆安集团有限公司,陕西西安710077 [2]西安智通自动化技术开发公司,陕西西安710048

出　　处：《铸造技术》2024年第1期94-98,共5页Foundry Technology

基　　金：西安市重大科技成果就地转化(2021SFGX0004)。

摘　　要：Cu-10Sn-3Pb-4Ni合金由于较高的Sn含量以及凝固组织中存在硬脆δ-Cu41Sn11相,具备较高的强度、硬度和耐磨性,广泛应用于具有高速滑动摩擦场景的机械部件中。本文通过真空感应熔炼Cu-10Sn-3Pb-4Ni合金,采用光学显微镜、X射线及荧光探伤对添加脱氧剂Cu-10P前后Cu-10Sn-3Pb-4Ni合金的组织和力学性能进行测试表征。结果表明,添加0.05%(质量分数)脱氧剂Cu-10P后,铸锭组织更加均匀,树枝晶的生长更加充分,δ相的生长得到抑制。铸锭的边缘抗拉强度由323 MPa提升到了342 MPa,断后伸长率由12.5%提升到了16.5%;铸锭芯部抗拉强度由300 MPa提升到了324 MPa,断后伸长率由11%提升到了19%。Due to the high Sn content and the presence of a hardness and brittlenessδ-Cu41Sn11 phase in the solidification structure,Cu-10Sn-3Pb-4Ni alloys have high strength,hardness and wear resistance,allowing them to be widely used in high-speed sliding friction scenarios.This article reports a comparative study of a Cu-10Sn alloy prepared by vacuum induction melting with the addition of a Cu-10P deoxidizer.The microstructure and mechanical properties of the Cu-10Sn-3Pb-4Ni alloy were tested and characterized using optical microscopy and X-ray and fluorescence inspections.The results show that after adding 0.05 wt.%Cu-10P as a deoxidizer,the microstructure of the ingot becomes more uniform,the growth of dendrites becomes more sufficient,and the growth of theδphase is inhibited.The tensile strength of the edge in the ingot increases from 323 MPa to 342 MPa,and the elongation after fracture increases from 12.5%to 16.5%.The tensile strength of the core in the ingot increases from 300 MPa to 324 MPa,and the elongation after fracture increases from 11%to 19%.

关 键 词：Cu-10Sn合金 脱氧剂Cu-10P 真空熔铸 合格率 力学性能 

分 类 号：TG146.11[一般工业技术—材料科学与工程]