[논문][100] Directional alignment of Ni-based single- crystal superalloys to measure orientation and accurate misfit between γ and γ’ phases via high-resolution X-ray diffraction

Jung, In-Young; Do, Jeonghyeon; Kim, Chang Soo; Song, Seungwoo

doi:10.1016/j.jallcom.2019.153521

[해외논문] [100] Directional alignment of Ni-based single- crystal superalloys to measure orientation and accurate misfit between γ and γ’ phases via high-resolution X-ray diffraction

Journal of alloys and compounds, v.821, 2020년, pp.153521 -

Jung, In-Young (Center for Convergence Property Measurement, Division of Industrial Metrology, Korea Research Institute of Standards and Science) , Do, Jeonghyeon (High Temperature Materials Center, Korea Institute of Materials Science) , Kim, Chang Soo (Center for Convergence Property Measurement, Division of Industrial Metrology, Korea Research Institute of Standards and Science) , Song, Seungwoo (Center for Convergence Property Measurement, Division of Industrial Metrology, Korea Research Institute of Standards and Science)

Abstract ▼ AI-Helper

Abstract Although it is important to measure the lattice misfit and orientation in Ni-based single-crystal superalloys to predict their mechanical properties, it is difficult to measure the exact orientation and lattice misfit owing to deviations between the surface and growth direction using conventional x-ray diffraction. Therefore, we developed the growth directional alignment method to measure the orientation and misfit accurately via high-resolution x-ray diffraction. Using this method, we obtained the dominant orientation information both for the out-of-surface and in-surface directions. Moreover, we could achieve sufficient angular resolution during diffraction to measure the lattice misfit between the γ and γ’ phases. Highlights The theoretical model for [100] directional alignment was developed. This method could enhance intensity of diffraction significantly via HRXRD. The orientation information could be achieved overcoming the limitations of EBSD. This can provide accurate lattice misfit compared to that of synchrotron or neutron studies. Graphical abstract [DISPLAY OMISSION]

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DOI : 10.1016/j.jallcom.2019.153521
Elsevier : 저널 > 논문

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