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Mechanical properties and microstructural stability of wrought, laser, and electron beam glazed NARloy-Z alloy at elevated temperatures

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Abstract

Microstructure of wrought, laser and electron beam processed NARloy-Z (Cu-3 wt % Ag–0.5 wt% Zr) was investigated for thermal stability at elevated temperatures 539–760 °C (1100 to 1400°F) up to 94 h. Optical and scanning electron microscopy and electron probe microanalysis were employed for studying microstructural evolution and kinetics of precipitation. Grain boundary precipitation and precipitate free zones (PFZs) were observed in the wrought alloy after exposing to temperatures above 605 °C (1120 °F). Fine-grained microstructure observed in the laser and electron beam (EB) processed NARloy-Z was much more stable at elevated temperatures. Tensile properties of laser and EB glazed NARloy-Z can be tailored by giving suitable heat treatments and maintaining the same strength with increased ductility. Microstructural changes correlated well with hardness measurements and mechanical properties.

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References

  1. P. S. Chen and J. H. Sanders, “An Investigation on the Ductility Loss ofVPS NARloy-Z at Elevated Temperatures”, (IIT Research Institute/MRF, 1992).

  2. J. S. Singh, G. Jerman, R. Poorman and B. N. Bhat, “Microstructural Evolution Of NARloy-Z At Elevated Temperatures” NASA Technical Memorandum No. 108419, Marshall Space Flight Center Huntsville, AC, 1993.

    Google Scholar 

  3. J. S. Andrus and R. G. Bourdeau, “Thrust Chamber Material Technology Program”,(Pratt & Whitney, West Palm Beach, FL, 1989).

    Google Scholar 

  4. D. B. Morgan and A. C. Kobayashi,“Main Combustion Chamber and Cooling Technology”, (Aerojet, Sacramento, CA, 1989).

    Google Scholar 

  5. J. S. Sanders, “An Investigation of Main Combustion Chamber Liner 4011 Degradation”, (IIT Research Institute/Metallurgy Research Facility (MRF), 1992).

  6. N. E. Paton and W. M. Robertson,“Metallurgy of NARloy-Z”, (Rocketdyne, Canoga Port, CA, 1973).

    Google Scholar 

  7. J. S. Singh, G. Jerman, R. Poorman and B. N. Bhat, “Microstructural stability of wrought, laser and electron beam glazed NARloy-Z at elevated temperatures”, (NASA-Marshall Space Flight Center (MSFC) TM, 1993) no. 108431.

    Google Scholar 

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Authors and Affiliations

  1. Applied Research Laboratory, The Pennsylvania State University, University Park, PA, 16804, USA

    J Singh

  2. NASA-Marshall Space Flight Center, Huntsville, AL, 35812, USA

    G Jerman

  3. NASA-Marshall Space Flight Center, IIT Research Institute, Huntsville, AL, 35812, USA

    R Poorman

Authors
  1. J Singh
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  2. G Jerman
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  3. R Poorman
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  4. B. N Bhat
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  5. A. K Kuruvilla
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Singh, J., Jerman, G., Poorman, R. et al. Mechanical properties and microstructural stability of wrought, laser, and electron beam glazed NARloy-Z alloy at elevated temperatures. Journal of Materials Science 32, 3891–3903 (1997). https://doi.org/10.1023/A:1018604513547

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  • DOI: https://doi.org/10.1023/A:1018604513547

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