钛合金叠形波纹管的设计和制造

摘要

用有限元分析软件对叠形波纹管进行了结构设计,采用扩散连接方法和应力松弛技术制备了TA15钛合金叠形波纹管结构件.对高温扩散焊接叠形波纹管扩散连接界面微观组织、母材的晶粒度、材料的性能损失、气密性、刚度进行了分析和测试.结果表明采用扩散连接技术制备的叠形波纹管焊接接头良好,满足气密性、强度、刚度和疲劳性能要求.%TA15 titanium alloy V-shaped bellows is designed by finite element method and manufactured by diffusion bonding and stress relaxation technology. The microstructure of diffusion bonding interface, grain size of base metal, material performance loss, intensity and stiffness of high-temperature diffusion bonded V-shaped bellow are analyzed and tested. The results show that the weld joint is good and meets the requirement of intensity, strength, stiffness and fatigue property.