Ag-Cu-Ti钎料连接C/C复合材料与钛合金的界面显微组织分析  

Microstructure analyses on joint of carbon / carbon composites and titanium alloy using Ag-Cu-Ti as brazing metal

作　　者：周显光[1] 张福勤[1] 于奇[1] 夏莉红[1] 

机构地区：[1]中南大学粉末冶金国家重点实验室,湖南长沙410083

出　　处：《材料研究与应用》2013年第2期67-71,共5页Materials Research and Application

基　　金：国家重点基础研究发展规划项目(2011CB605803);粉末冶金国家重点实验室自主课题

摘　　要：以Ag-Cu-Ti合金为钎料钎焊连接C/C复合材料与钛合金(TC4),通过SEM对钎焊连接接头的微观组织和形貌进行分析,用EDS和XRD分析接头中的元素分布和物相组成.实验结果表明,中间钎料层与TC4合金之间的界面,形成了良好的界面扩散层,厚度为5～7μm,与TC4钛合金连接侧的钎料相组成主要为CuTi2,CuTi和Cu3Ti2;钎料层与C/C复合材料形成的扩散层厚度为1～3μm,与C/C复合材料连接侧的钎料相组成主要为CuTi2和CuTi.C/C复合材料与TC4合金之间形成了冶金结合.C/C composites and titanium alloy （TC4） were brazed with Ag-Cu-Ti alloy. The microstructure was observed by SEM. The element distribution and composition of the phase in the joints were investiga- ted by EDS and XRD. The result shows that a diffusion layer of 5-7μm was formed in the interface between brazing metal and TC4 alloy,which consist of CuTi2 ,CuTi and Cu3Ti2. Aanother diffusion layer of 1-3#m were also found in the interface between the brazing metal and the C/C composite, which is comprised of CuTi2 and CuTi. The brazing metal diffused obviously towards both ends, which formed metallurgical bonding between C/C and TC4.

关 键 词：C C复合材料 钛合金 钎焊 连接 

分 类 号：TG454[金属学及工艺—焊接]