Ti2AlNb合金燃烧室支板扩散焊工艺研究  

Diffusion bonding process of Ti2AlNb alloy combustor strut

作　　者：马瑞[1] 张亮[1] 周恺[1] 

机构地区：[1]北京动力机械研究所,100074

出　　处：《焊接》2014年第5期52-55,75,共4页Welding & Joining

摘　　要：以某型号航天冲压发动机燃烧室支板为研究对象,对Ti2AlNb合金进行了扩散焊工艺技术研究,获得了优化的扩散焊工艺参数,扩散焊试件的室温及高温(650℃)力学性能较优。在此基础上通过焊接工装设计、有限元仿真将扩散焊工艺成功应用于燃烧室支板的生产中,产品各项检测合格,并顺利通过地面热环境试验,实现了国内首次大尺寸Ti2AlNb合金结构件焊接。Diffusion bonding process of Ti2 AlNb alloy was studied by taking a certain ramjet engine combustor strut as the research object.The optimized diffusion bonding process parameter was obtained,and mechanical properties of the diffusion bonding specimen at the room temperature and high temperature(650 ℃) are good.The diffusion bonding process was applied to production of Combustor strut,which passes ground thermal-circumstance test successfully.The large-size Ti2 AlNb alloy structure welding is realized for the first-time.

关 键 词：冲压发动机 燃烧室支板 Ti2AlNb合金 扩散焊 有限元仿真 

分 类 号：TG453.9[金属学及工艺—焊接]