以区域增强TA15钛合金四层结构为背景,对区域增强TA15四层结构SPF/DB的工艺过程进行了研究。开展了面板预成形和区域增强TA15四层结构的SPF/DB成形试验,成形出区域增强TA15钛合金四层结构件;采用金相显微镜观察分析了成形前后面板、芯板和增强块的微观组织变化,并利用扫描电子显微镜观察面板、芯板以及增强块间扩散连接面的连接情况。 Based on the four-layer structure of TA15 titanium alloy reinforced with region, the process of enhancing the four-layer structure SPF / DB of TA15 was studied. The four-layer structure of the TA15 titanium alloy was formed by the SPF / DB forming test of the four-layer structure of TA15. The microstructure of the front and rear panels, the core plate and the reinforcing block were observed by optical microscope Changes, and the use of scanning electron microscope to observe the panel, the core board and enhance the diffusion connection between the junction surface.