稀土钇微合金化对Cu-2Ag合金铸锭成分和热加工性能的影响  

Effect of Rare Earth Yttrium Microalloying on Composition and Hot-working Ability of Cu-2Ag Alloy Ingots

作　　者：曾延琦 余辉辉 李洁 邹晋[1,2] 姜江 刘琦[1,2] 郭玉松 邱伊健 胡晓娜[1,2] ZENG Yanqi;YU Huihui;LI Jie;ZOU Jin;JIANG Jiang;LIU Qi;GUO Yusong;QIU Yijian;HU Xiaona(Institute of Applied Physics,Jiangxi Academy of Sciences,Nanchang 330096,China;Jiangxi Key Laboratory of Advanced Copper and Tungsten Materials,Nanchang 330096,China;Jiangxi Chemical Industry School,Nanchang 330096,China)

机构地区：[1]江西省科学院应用物理研究所,江西南昌330096 [2]江西省铜钨新材料重点实验室,江西南昌330096 [3]江西省化学工业学校,江西南昌330096

出　　处：《热加工工艺》2022年第23期24-26,32,共4页Hot Working Technology

基　　金：江西省重点研发计划项目(20202BBEL53022);江西省科学院重点科研开发项目(2020-YZD-07);江西省科学院科研开发专项基金博士项目(2020-YYB-13);江西省科学院重大科研开发专项项目(2020-YZD-2);江西省重大科技研发专项项目(20212AAE01003)。

摘　　要：采用电感耦合等离子体原子发射光谱仪(ICP-AES)、氧分析仪、扫描电子显微镜(SEM)、差示扫描量热分析(DSC)和热锻试验,研究稀土钇微合金化对Cu-2Ag合金铸锭成分和热加工性能的影响。结果表明:与Cu-2Ag合金铸坯相比,Cu-2Ag-0.075Y铸坯中O、S、P和Zn等杂质元素含量明显降低,Bi、As和Sb的含量也有不同程度的降低;稀土钇微合金化可以显著提升Cu-2Ag合金铸锭成分的洁净度;受稀土钇微合金化的影响,Cu-2Ag-0.075Y合金铸坯在850℃温度以上时,热加工性能发生显著变化,表现为塑性差、呈热脆性,锻后开裂,甚至碎成渣。The effects of rare earth yttrium microalloying on the composition and hot-working ability of Cu-2Ag alloy ingot were studied by using inductively coupled plasma atomic emission spectrometry(ICP-AES), oxygen analyzer, scanning electron microscope(SEM), differential scanning calorimetry(DSC) and hot forging experiment. The results show that compared with those of Cu-2Ag alloy ingot, the contents of O, S, P and Zn in Cu-2Ag-0.075Y alloy ingot are significantly reduced, and the contents of Bi, As and Sb are also reduced in varying degrees. Rare earth yttrium microalloying can significantly improve the cleanliness of Cu-2Ag alloy ingot composition. Due to the influence of rare earth yttrium microalloying, the hot-working ability of Cu-2Ag-0.075Y alloy ingot changes significantly when the temperature is above 850℃, which is characterized by poor plasticity and thermal brittleness, cracking and even slag crushing after forging.

关 键 词：稀土钇 Cu-2Ag合金 成分 热加工性能 

分 类 号：TG243[金属学及工艺—铸造] TG291TG301