Journal
MATERIALS LETTERS
Volume 353, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2023.135305
Keywords
Laser powder bed fusion; Diffraction elastic constants; Single-crystal elastic constants; X-ray diffraction; Elastic anisotropy
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High energy X-ray synchrotron diffraction was used to investigate the elastic anisotropy of the nickel-based superalloy IN718 produced by laser powder bed fusion (PBF-LB). Different micromechanical models were used to refine the single-crystal elastic constants (SCEC) from these experiments. The results show that each model accurately describes the elastic anisotropy of the material.
High energy X-ray synchrotron diffraction is used to investigate the elastic anisotropy of the nickel-based superalloy IN718 produced by laser powder bed fusion (PBF-LB). This material is characterized by a columnar grain morphology with some crystallographic texture. The material is subjected to elastic loading to determine the diffraction elastic constants (DECs). Furthermore, the single-crystal elastic constants (SCEC) are refined from these experiments using different micromechanical models. The results show that each micromechanical model predicts a specific set of SCEC that well describes the elastic anisotropy of PBF-LB/IN718.
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