Cu-4Ag合金微细丝拉拔极限预测模型  

Prediction model for drawing limit of Cu-4Ag alloy microwires

作　　者：张学宾[1] 谷继华 封存利 鲁龙龙 张彦敏[1] 宋克兴[1,3] 皇涛 ZHANG Xue-bin;GU Ji-hua;FENG Cun-li;LU Long-long;ZHANG Yan-min;SONG Ke-xing;HUANG Tao(School of Materials Science and Engineering,Henan University of Science and Technology,Luoyang 471023,China;Henan Senger Materials Technology Co.,Ltd.,Jiaozuo 454000,China;Henan Academy of Sciences,Zhengzhou 450002,China)

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471023 [2]河南森格材料科技有限公司,河南焦作454000 [3]河南省科学院,河南郑州450002

出　　处：《塑性工程学报》2024年第2期157-162,共6页Journal of Plasticity Engineering

基　　金：国家自然科学基金资助项目(U21A2051);中原学者工作站资助项目(214400510028);河南省重点研发与推广专项(212102210441);中国工程科技发展战略河南研究院战略咨询研究项目(2021HENZDA02)。

摘　　要：采用三室真空冷型竖引连铸设备制备了Cu-4Ag合金铸态杆坯,并利用连续冷拉拔变形得到了不同线径的Cu-4Ag合金微细丝,通过拉拔实验获取了不同线径下材料的屈服强度和抗拉强度;基于线径与强度的关系,构建了微细丝拉拔极限预测模型。结果表明,在拉拔过程中,Cu-4Ag合金微细丝的线径与抗拉强度密切相关,具有明显的尺寸效应;修正后的拉拔极限模型能够较为准确地预测不同线径的Cu-4Ag合金微细丝能够达到的拉拔极限。将拉拔极限模型产出的数据导入MATLAB中,构建了三维曲面模型,可以更为直观地分析材料的拉拔极限。Cu-4Ag alloy cast rod billets were prepared by using the three-chamber vacuum cold vertical lead continuous casting equipment,and Cu-4Ag alloy microwires with different wire diameters were obtained by continuous cold drawing deformation.The yield strength and tensile strength of materials with different wire diameters were obtained by drawing tests.Based on the relationship between wire diameters and strength,the drawing limit prediction model for microwire was established.The results show that during the drawing process,the wire diameter of Cu-4Ag alloy microwire is closely related to the tensile strength,and there is significant size effect;the modified drawing limit model can accurately predict the drawing limit that Cu-4Ag alloy microwires with different wire diameters can reach.The data generated by the drawing limit model was imported into MATLAB to construct the three-dimensional curved surface model,and it can more intuitively analyze the drawing limit of materials.

关 键 词：Cu-4Ag合金微细丝 屈服强度 抗拉强度 拉拔极限预测模型 MATLAB 

分 类 号：TG146.1[一般工业技术—材料科学与工程]