Effects of the grain shape and crystallographic texture on the grain-scale mechanical behavior of additively manufactured aluminum alloys
| Autor: | R. R. Balokhonov, E. N. Moskvichev, Dmitry V. Lychagin, A. Filippov, E. Dymnich, V. Romanova, O. Zinovieva |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Equiaxed crystals
Materials science Morphology (linguistics) зернистая структура селективное лазерное плавление Stress–strain curve Biomedical Engineering chemistry.chemical_element кристаллографическая текстура Industrial and Manufacturing Engineering Finite element method chemistry Aluminium микромеханика General Materials Science Texture (crystalline) Selective laser melting Composite material Engineering (miscellaneous) Microscale chemistry алюминиевые сплавы |
| Zdroj: | Additive manufacturing. 2021. Vol. 48, p. A. P. 102415 (1-11) |
| Popis: | The grain shape and texture effects in aluminum alloys manufactured by selective laser melting are studied numerically in terms of micromechanical simulations. The method of step-by-step packing is adopted to generate the three-dimensional grain morphology typical for these materials. Crystal plasticity finite element simulations of uniaxial tension are performed for two models with random and cube-textured columnar grains inherent in selective laser melting. Comparative analysis of the computational results shows a substantial difference between the microscale stress and strain fields. The presence of cube-textured columnar grains provides more homogeneous stress-strain distributions inside the melt pools and unloads the adjacent regions of fine equiaxed grains, thus reducing high stress concentration in them. |
| Databáze: | OpenAIRE |
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