Investigation of the tensile deformation behaviour in Ni-based superalloy inconel alloy 617 using EBSD-based finite element simulations and optical flow method
نویسندگان
چکیده
Abstract To improve component design, the fundamental understanding of fatigue behaviour gas turbine materials is essential. Since Ni-alloys exhibit pronounced elastic anisotropy, local grain orientation strongly affects stress and strain distribution in material under mechanical loadings. This work addresses characterisation anisotropic elastic–plastic deformation its consequences for crack initiation nickel-base superalloy IN617 tensile loading. Samples were loaded situ a scanning electron microscope (SEM) to correlate with structure determined by backscatter diffraction (EBSD) measurements. calculate resulting stresses strains, EBSD data used develop model finite element method (FEM) considering orientation. The results (FE) simulation compared theories E⋅m based on Schmidt factor (m) Young’s modulus (E). A mathematical image registration called “optical flow method” (OFM), which capable transformation measuring points during deformation, was applied data. strains calculated optical FE two samples. findings revealed large later area found both OFM FEM. developed FEM verified successful correlation hypotheses E·m simulated behaviour. Furthermore, impact microstructural neighbourhood emphasised. Graphical
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ژورنال
عنوان ژورنال: Journal of Materials Science
سال: 2023
ISSN: ['1573-4803', '0022-2461']
DOI: https://doi.org/10.1007/s10853-023-08558-5