The United States Army’s research laboratory has discovered a method of brazing titanium so as to fabricate structures without welding. The laboratory studied the vacuum brazing of titanium and the effects of changes in brazing alloys and brazing process conditions. This resulted in a process in which titanium sheets were cleaned then applied with a zirconium-rich titanium brazing paste. The coated titanium sheets were then stacked on pyramidal frame core sheets in a sandwich configuration. The stacks were then heated in a vacuum furnace at 900C under a pressure of 50kPa.The pyramidal frame cores were bonded with the titanium after the process. The resulting sheets could then be used to fabricate structures in circumstances in which parts cannot be welded because access is limited or adjacent nonmetallic components would be damaged. According to the scientists, they will try different brazing alloys in the process, which could result in bonds of similar or greater strength at lower brazing temperatures.