成型工艺对钨基复合材料界面组织和性能的影响  

Effect of Forming Process on the Interface Structure and Properties ofTungsten Matrix Clad Materials

作　　者：赵惠 ZHAO Hui(School of Material Science and Engineering,Xi'an Shiyou University,Xi'an 710065,China)

机构地区：[1]西安石油大学材料科学与工程学院,西安710065

出　　处：《材料导报》2020年第S02期351-355,共5页Materials Reports

基　　金：陕西省创新能力支撑计划:创新人才推进计划-科技创新团队(2018TD-035);西安科技计划项目(2020KJRC0100)。

摘　　要：采用三种成型工艺制备钨/铜复合材料。采用金相显微镜、扫描电镜(SEM)、能谱仪(EDS)观察和分析了工艺对复合材料界面微观组织的影响,以及界面元素扩散情况,并对铜母材与复合材料进行拉伸试验。结果表明,不同成型工艺对钨/铜复合材料的质量影响较大。结果表明,爆炸焊接过程中W与Cu两种元素未发生元素扩散,从而避免了脆性相的产生。因此,特征波形界面、熔化块仅存于漩涡和界面,无元素扩散,是钨与铜形成焊接的条件。室温拉伸试验结果显示,与铜母材相比,钨/铜复合材料抗拉强度与铜母材接近,屈服强度高约8.3%,伸长率降低约14.6%。W/Cu clad materials were prepared by three different forming processes.The influence of process on the interface microstructure and the diffusion of interface elements were investigated by optical microscope,scanning electron microscope(SEM)and energy dispersive spectrometer(EDS).According to the results of the linear scanning of W and Cu elements,the diffusion of the two elements did not occur during the explosive welding process.It avoids the generation of brittle phase.Therefore,the characteristic wave interface,the melting block packed in the vortex and no element diffusion,are the conditions for the welding of W and Cu.The results of tensile test at room temperature show that the tensile strength of W/Cu clad materials is close to that of Cu,the yield strength is about 8.3%higher and the elongation is about 14.6%lower than that of Cu.

关 键 词：钨/铜复合材料 界面微观组织 拉伸强度 爆炸焊接 

分 类 号：TG39[金属学及工艺—金属压力加工]