Unveiling damage sites and fracture path in laser powder bed fusion AlSi10Mg: Comparison between horizontal and vertical loading directions
| Autor: | Aude Simar, Lv Zhao, Zhenhuan Li, Thierry Douillard, Juan Guillermo Santos Macias |
|---|---|
| Přispěvatelé: | Huazhong University of Science and Technology [Wuhan] (HUST), Institute of Mechanics, Materials and Civil Engineering [Louvain] (IMMC), Université Catholique de Louvain = Catholic University of Louvain (UCL), Hubei Key Laboratory of Engineering Structural Analysis and Safety Assessment, Matériaux, ingénierie et science [Villeurbanne] (MATEIS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Coalescence (physics) Fusion Materials science Mechanical Engineering Nucleation 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure 01 natural sciences [PHYS.MECA.MEMA]Physics [physics]/Mechanics [physics]/Mechanics of materials [physics.class-ph] Mechanics of Materials 0103 physical sciences Ultimate tensile strength Fracture (geology) Perpendicular General Materials Science Composite material 0210 nano-technology Ductility ComputingMilieux_MISCELLANEOUS |
| Zdroj: | Materials Science and Engineering: A Materials Science and Engineering: A, Elsevier, 2021, 807, pp.140845. ⟨10.1016/j.msea.2021.140845⟩ |
| ISSN: | 0921-5093 |
| DOI: | 10.1016/j.msea.2021.140845⟩ |
| Popis: | The laser powder bed fusion (LPBF) additively manufactured AlSi10Mg alloy has been subjected to numerous investigations addressing its microstructure and mechanical properties. However, there is still a gap in the understanding of the correlation between the microstructure and fracture behavior, in particular when the melt pool border is oriented differently to tensile load. In this work, damage nucleation sites and fracture path of as built LPBF AlSi10Mg were analyzed and compared for two loading directions. For the first time, the orientation of the melt pool border is shown to present negligible effect on a ductility exceeding 10%, in contrast to previous works. Through observation and statistical analysis of damage, it is found for both loading directions that the melt pool border does not exhibit damage localization. When the melt pool border is perpendicular to tensile load, the crack propagates frequently along the coarse melt pool due to easier damage growth in this relatively softer region. Nevertheless, the ductility is barely compromised owing to delayed damage coalescence across larger α-Al cells. |
| Databáze: | OpenAIRE |
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