Active metal brazing and characterization of brazed joints in titanium to carbon–carbon composites

✍ Scribed by M. Singh; T.P. Shpargel; G.N. Morscher; R. Asthana

• Book ID: 104061127
• Publisher: Elsevier Science
• Year: 2005
• Tongue: English
• Weight: 481 KB
• Volume: 412
• Category: Article
• ISSN: 0921-5093
• DOI: 10.1016/j.msea.2005.08.179

✦ Synopsis

The Ti-metal/C-C composite joints were formed by reactive brazing with three commercial brazes, namely, Cu-ABA, TiCuNi, and TiCuSil. The joint microstructures were examined using optical microscopy and scanning electron microscopy coupled with energy dispersive X-ray spectrometry. The results of the microstructure analysis indicate solute redistribution across the joint and possible metallurgical bond formation via interdiffusion, which led to good wetting and spreading. A tube-on-plate tensile test was used to evaluate joint strength of Ti-tube/C-C composite joints. The load-carrying ability was greatest for the Cu-ABA braze joint structures. This system appeared to have the best braze spreading which resulted in a larger braze/C-C composite bonded area compared to the other two braze materials. Also, joint load-carrying ability was found to be higher for joint structures where the fiber tows in the outer ply of the C-C composite were aligned perpendicular to the tube axis when compared to the case where fiber tows were aligned parallel to the tube axis.