Influence of cold deformation on microstructure, crystallographic orientation and tensile properties of an experimental austenitic Fe–26Mn-0.4C steel
The correlation between microstructure, crystallographic orientation and grain boundaries characteristics of an austenitic high manganese steel was systematically investigated. The as-received and cold-rolled specimens with 50% and 70% reduction were analyzed using Scanning Electron Microscopy (SEM)...
| Autores: | , , , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2022 |
| 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:2117/372867 |
| Acceso en línea: | https://hdl.handle.net/2117/372867 https://dx.doi.org/10.1016/j.jmrt.2022.05.020 |
| Access Level: | acceso abierto |
| Palabra clave: | Steel Austenitic high manganese steel Mechanical twinning Lattice distortion Grain boundaries Texture Acer Àrees temàtiques de la UPC::Enginyeria dels materials |
| Sumario: | The correlation between microstructure, crystallographic orientation and grain boundaries characteristics of an austenitic high manganese steel was systematically investigated. The as-received and cold-rolled specimens with 50% and 70% reduction were analyzed using Scanning Electron Microscopy (SEM), Electron Back-Scattered Diffraction (EBSD) and X-ray diffraction techniques. A significant increase in the fraction of low-energy S3 twin boundaries, from 16.21% to 24.41%, was found in the 70% deformed sample. This was coupled with the formation of {011} austenitic structure, and occurrence of twinning-induced plasticity. The ductile-brittle fracture mode observed in the 70% cold rolled sample, which can be attributed to the formation of the high fraction of low-energy S3 twin boundaries, minimized both the localized stored strain energy and lattice misfit and promoted dislocation glide. A potential employment of the investigated steel in the petroleum industry is discussed. |
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