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Joining of a PdCr Resistance Strain Gauge to Inconel 718 Using an Infrared Process
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Abstract
Joining of a PdCr Strain Gage with a Hastelloy X carrier shim to Inconel by a rapid infrared processing technique has been investigated at 1150 °C using a nickel based brazing alloy AMS 4777, Ni-7Cr-3Fe-3.2B-4.5Si-.06C in wt%. The effects of the infrared joining parameters on the joint and base material microstructure, joint shear strength, and delamination tendency of the PdCr gage was investigated. Results show that the joint shear strength is as high as 503 MPa when processed at approximately 1150 °C for 120 seconds. Microstructural examinations of the joint with both an optical microscope and a scanning electron microscope indicate that good wetting exists between the brazing alloy with both the Hastelloy X and Inconel 718. And, the Hastelloy X and Inconel 718 exhibits no noticeable change in microstructure due to the rapid processing cycle of the infrared heating process while the stabilized PdCr wire gage shows little change in resistance. High temperature delamination studies of an infrared joined strain gage show no delamination at 800 °C when flexed 1 mm in a four point bend setup.
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Citation
Blue, C., Blue, R., Lin, R., Lei, J. et al., "Joining of a PdCr Resistance Strain Gauge to Inconel 718 Using an Infrared Process," SAE Technical Paper 941201, 1994, https://doi.org/10.4271/941201.Also In
References
- Blue C. A. Lin R. Y. Lei J. F. Williams W. D. Infrared Joining of Titanium Matrix Composites NASP Technology NASP Contractor Report 1153 April 1993
- Lei J. F. High Temperature Strain Measurement with a Resistance Strain Gage HITEMP Review 1992
- Blue C. A. Warrier S. G. Robson M. T. Lin R. Y. Rapid Infrared Joining of 4340 Steel Welding Journal 72 6 1993 51 56
- Ma Y. Blue C. A. Lin R. Y. Infrared Joining of Fe 3 Al Processing of Advanced Materials Sept. 1993
- Blue C. A. Blue R. A. Lin R. Y. Infrared Joining of TiAI Processing of Advanced Materials Dec. 1993
- Blue C. A. Lin R. Y. Rapid Infrared Joining of Ti-6AI-4V Processing of Advanced Materials June 1993
- Blue C. A. Blue R. A. Lin R. Y. Joining of SCS-6/Beta21S Titanium Matrix Composite Processing of Advanced Materials Sept. 1993
- Sakamoto A. Fujiwara C. Hattori T. Sakai S. Optimizing Processing Variables in High-Temperature Brazing with Nickel-Based Filler Metals Welding Journal 68 4 1989 63 71
- Blue C. A. Blue R. A. Lin R. Y. Lei J. F. Williams W. D. Infrared Joining of Titanium Matrix Composites Proceedings of the American Society for Composites, Eight Technical Conference Oct. 1993
- Blue C. A. Lin R. Y. Rapid Infrared Joining of Titanium Alloys and Titanium Matrix Composites MRS Spring Meeting April 1993
- Lugscheider E. Schittny T. Hulmoy E. Metallurgical Aspects of Additive-Aided Wide-Clearance Brazing with Nickel-Based Filler Metals Welding Journal 68 1 1989 9 13
- Christensen J. et al. Nickel Brazing Below 1025 C of Untreated Inconel 718 Welding Research Supplement 53 10 1974
- Lei J. F. A Resistance Strain Gage with Repeatable and Cancelable Apparent Strain for Use to 800 °C NASA Report No. CR-185256 1990