Abstract
In this study, joining of SCS-6/β21-S titanium matrix composites was investigated with an innovative rapid infrared joining technique, RIJ. This technique takes only a few seconds to a few minutes to join parts up to 1.8 cm in thickness. The advantages of the RIJ technique are quick, simple, inexpensive, no vacuum or pressure needed, no effect on the microstructure of the base material, flexible and feasible for portable operation. β21S/SCS-6 composite has been joined successfully with infrared at 1100 °C for times of 10, 30, and 60 seconds in argon with a Ti-15Ni-15Cu brazing alloy, Metglas MBF-5003. The maximum joint shear strength is up to 301 MPa, which is higher than that of any bond joined with conventional brazing techniques. Microstructural examinations of the RIJ processed TMC reveal no changes in either the matrix microstructure or the interfacial reaction zone between the fiber and the matrix as a result of high temperature processing. Flexural strengths of the as received and thermal cycled TMC obtained with a three point bend test revealed little change in the strength, modulus, and total strain to failure induced by the thermal cycle during joining. The infrared joining technique allows for high temperature joining of SCS-6/β21-S TMC components in seconds with little to no degradation of the TMC while conventional joining techniques take multiple hours, require vacuum, and can cause degradation of the TMC properties.
| Original language | English |
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| Pages | 903-908 |
| Number of pages | 6 |
| State | Published - 1994 |
| Externally published | Yes |
| Event | Proceedings of the 8th Technical Conference of the American Society for Composites (ASC) - Cleveland, OH, USA Duration: Oct 19 1993 → Oct 21 1993 |
Conference
| Conference | Proceedings of the 8th Technical Conference of the American Society for Composites (ASC) |
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| City | Cleveland, OH, USA |
| Period | 10/19/93 → 10/21/93 |