Metallography, Microstructure, and Analysis

, Volume 5, Issue 4, pp 342–349 | Cite as

A Comparison on the EBSD and RO-XRD Techniques for Measuring Crystal Orientation of the Single-Crystal Ni-Based Superalloys

  • F. Sadeghi
  • A. Kermanpur
  • N. Sarami
  • D. Heydari
  • J. Nematollahi
  • M. Bahmani
Technical Article


Measuring crystal orientation of a single-crystal Ni-based superalloy was conducted by two techniques of electron-backscattered diffraction (EBSD) and rotating-orientation x-ray diffraction (RO-XRD). Several single-crystal specimens were fabricated by Bridgman method at different withdrawal velocities. The misorientation of the preferred crystal orientation with the solidification direction of all specimens was characterized. A good match between the EBSD and RO-XRD methods was observed. The results showed an increasing trend of crystal misorientation with increasing withdrawal velocity.


Single-crystal superalloy Crystal orientation Rotating-orientation x-ray diffraction Electron-backscattered diffraction 



The authors would like to thank the financial support of the project by Mapna Turbine Blade Engineering and Manufacturing Company and Mapna Group Research and Development department (Contract # B3029001-3).


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Copyright information

© Springer Science+Business Media New York and ASM International 2016

Authors and Affiliations

  • F. Sadeghi
    • 1
  • A. Kermanpur
    • 1
  • N. Sarami
    • 1
  • D. Heydari
    • 2
  • J. Nematollahi
    • 2
  • M. Bahmani
    • 2
  1. 1.Department of Materials EngineeringIsfahan University of TechnologyIsfahanIran
  2. 2.Mapna Turbine Blade Engineering & Manufacturing Co.KarajIran

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