真空熔铸槽型W/CuCrZr复合板界面特征研究  

Study on Vacuum Melting and Casting of Tungsten and Copper with Dovetail Groove Structure

作　　者：孙玉玲 马宏昊[1,3] 沈兆武[1] 罗宁 Sun Yuling;Ma Honghao;Shen Zhaowu;Luo Ning(CAS Key Laboratory of Mechanical Behavior and Design of Materials,University of Science and Technology of China,Hefei 230026,China;PLA Army Academy of Artillery and Air Defense,Hefei 230031,China;State Key Laboratory of Fire Science,University of Science and Technology of China,Hefei 230026,China;School of Mechanics and Civil Engineering,China University of Mining and Technology,Xuzhou 221116,China)

机构地区：[1]中国科学技术大学中国科学院材料力学行为和设计重点实验室,安徽合肥230026 [2]中国人民解放军陆军炮兵防空兵学院,安徽合肥230031 [3]中国科学技术大学火灾科学国家重点实验室,安徽合肥230026 [4]中国矿业大学力学与土木工程学院,江苏徐州221116

出　　处：《稀有金属材料与工程》2023年第8期2844-2850,共7页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(51874267,12072363);中央高校基本科研业务费专项资金(WK2480000008,WK2320000049);安徽省科技重大专项(202003a05020035)。

摘　　要：为了获得高质量的W/CuCrZr复合材料,采用真空熔铸法制备了具有燕尾槽型结构的W/CuCrZr复合板材。通过光学显微镜、扫描电镜及EDS能谱分析、显微硬度仪等设备,系统分析了W/CuCrZr复合板结合界面的微观结构特征及力学性能。结果表明:在真空度为10^(-4)Pa,加热温度为1100~1200℃真空条件下熔铸制备的W/CuCrZr复合材料,结合界面以平直结构特征为主,界面结合紧密,无明显的缺陷生成。在结合界面处,元素发生明显的互扩散现象,并有明显的带状熔融扩散层生成,扩散层宽度为6~8μm。W/CuCrZr复合板钨侧的维氏硬度较母材有所提高,而CuCrZr侧的维氏硬度较母材有所降低。In order to obtain high quality W/CuCrZr composites,the W/CuCrZr composite plates with dovetail groove structure were fabricated by vacuum melting and casting.The microstructure characteristics and mechanical properties of W/CuCrZr joining interface were systematically analyzed by optical microscope,scanning electron microscope coupled with EDS analysis,hardness tester and other equipment.The results show that the joining interface of W/CuCrZr composite prepared by melting and casting under vacuum conditions of 10^(-4) Pa and heating temperature of 1100-1200℃presents flat and straight structure.The W and CuCrZr are tightly bonded at the interface without obvious defects.At the joining interface,the phenomenon of elemental interdiffusion occurs,there by forming a banded melting diffusion layer with the width of 6-8μm.The Vickers hardness on the tungsten side of the W/CuCrZr composite plate is improved compared with that of the base material,where as that on CuCrZr side is lower than that of the base metal.

关 键 词：真空熔铸 W/CuCrZr 扫描电镜 界面特征 

分 类 号：TB331[一般工业技术—材料科学与工程]