Infrared transient-liquid-phase joining of SCS-6/{beta}21S titanium matrix composite
- Oak Ridge National Lab., TN (United States). Materials Processing Group
- Univ. of Cincinnati, OH (United States). Dept. of Materials Science and Engineering
Fiber-reinforced titanium matrix composites (TMCs) are among the advanced materials being considered for use in the aerospace industry due to their light weight, high strength, and high modulus. A rapid infrared joining process has been developed for the joining of composites and advanced materials. Rapid infrared joining has been shown not to have many of the problems associated with conventional joining methods. Two models were utilized to predict the joint evolution and fiber reaction zone growth. Titanium matrix composite, 16-ply SCS-6/{beta}21S, has been successfully joined with total processing times of approximately 2 minutes, utilizing the rapid infrared joining technique. The process utilizes a 50 C/s ramping rate, 17-{micro}m Ti-15Cu-15Ni wt pct filler material between the faying surfaces; a joining temperature of 1,100 C; and 120 seconds of time to join the composite material. Joint shear-strength testing of the rapid infrared joints at temperatures as high as 800 C has revealed no joint failures. Also, due to the rapid cooling of the process, no poststabilization of the matrix material is necessary to prevent the formation of a brittle omega phase during subsequent use of the TMC at intermediate temperatures, 270 C to 430 C, for up to 20 hours.
- Sponsoring Organization:
- Oak Ridge National Lab., TN (United States); National Aeronautics and Space Administration, Washington, DC (United States)
- DOE Contract Number:
- AC05-96OR22464
- OSTI ID:
- 438564
- Journal Information:
- Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science, Vol. 27, Issue 12; Other Information: PBD: Dec 1996
- Country of Publication:
- United States
- Language:
- English
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