In-situ strengthening of a high strength low alloy steel during Wire and Arc Additive Manufacturing (WAAM)
In this work, SiC particles were added to the molten pool during WAAM of a high strength low alloy steel. The introduction of these high melting point particles promoted grain refinement, and the precipitation of Fe3C due to SiC dissociation. The microstructural evolution was studied by optical and...
| Autores: | , , , , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2020 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/368550 |
| Acceso en línea: | https://hdl.handle.net/2117/368550 https://dx.doi.org/10.1016/j.addma.2020.101200 |
| Access Level: | acceso abierto |
| Palabra clave: | Metals Steel, High strength Materials--Testing Wire and arc additive manufacturing HSLA steel SiC Inoculants Synchrotron X-ray diffraction Mechanical testing metalls Acer d'alta resistència Assaigs de materials Àrees temàtiques de la UPC::Enginyeria dels materials |
| Sumario: | In this work, SiC particles were added to the molten pool during WAAM of a high strength low alloy steel. The introduction of these high melting point particles promoted grain refinement, and the precipitation of Fe3C due to SiC dissociation. The microstructural evolution was studied by optical and electron microscopy techniques and high energy synchrotron X-ray diffraction. Additionally, mechanical testing and hardness profiles were obtained for the SiC-containing and SiC-free parts. An improvement in the mechanical strength of the SiC-added WAAM parts was observed, which was attributed to the refined grain structure and finely dispersed Fe3C. |
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