Crystallographic texture and velocities of ultrasonic waves in a Ni-based superalloy manufactured by laser powder bed fusion
| Autor: | Nicolas Leymarie, Lionel Germain, Amal Khabouchi, Alain Hazotte, Pascal Ventura |
|---|---|
| Přispěvatelé: | Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux (LEM3), Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS)-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM), Laboratoire d'Intégration des Systèmes et des Technologies (LIST), Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Gif-sur-Yvette, Labex DAMAS, Université de Lorraine (UL), HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM), Laboratoire d'Intégration des Systèmes et des Technologies (LIST (CEA)) |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Additive manufacturing EBSD 02 engineering and technology 01 natural sciences [SPI]Engineering Sciences [physics] 0103 physical sciences General Materials Science Texture Texture (crystalline) Composite material Anisotropy 010302 applied physics Fusion Mechanical Engineering Inconel 625 Transverse wave 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure Superalloy Ultrasounic waves Mechanics of Materials 0210 nano-technology Single crystal |
| Zdroj: | Materials Characterization Materials Characterization, Elsevier, 2020, 169, pp.110607. ⟨10.1016/j.matchar.2020.110607⟩ Materials Characterization, 2020, 169, pp.110607. ⟨10.1016/j.matchar.2020.110607⟩ |
| ISSN: | 1044-5803 |
| Popis: | International audience; This study investigated the mechanisms of formation of the microstructure and texture of an Inconel 625 manufactured by additive manufacturing, using laser-based powder bed fusion. The resulting texture has a quadratic symmetry and a composite organization of grains. Some elongated grains have their 〈100〉 aligned along the build-up direction and grow from the middle of the melt pool, whereas the others are inclined with a lower texture. This is explained on the basis of usual solidification mechanisms. The overall texture is not very pronounced (texture index of 1.24) but sufficient to influence ultrasound wave propagation in a measurable manner. The difference is the most pronounced between the slow and fast quasi transverse waves. The contribution of two main factors influencing the anisotropy, namely the anisotropy of the single crystal and the shape of the grains, are discussed in the paper. |
| Databáze: | OpenAIRE |
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