Deformation kinetics of a TRIP steel determined by in situ high-energy synchrotron X-ray diffraction
The microstructure design and the development of predictive approaches exploiting the transformation-induced plasticity (TRIP) effect require a keen understanding of the kinetics governing the strain-induced martensitic transformation. In this work, in situ high-energy synchrotron X-ray diffraction...
| Autores: | , , , , , , , , , , |
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| Formato: | artículo |
| Fecha de publicación: | 2021 |
| País: | España |
| Recursos: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/358669 |
| Acesso em linha: | https://hdl.handle.net/2117/358669 https://dx.doi.org/10.1016/j.mtla.2021.101251 |
| Access Level: | acceso abierto |
| Palavra-chave: | Stainless steel TRIP-aided steels Stainless steels Deformation kinetics In situ high-energy synchrotron X-ray diffraction Acer inoxidable Àrees temàtiques de la UPC::Enginyeria mecànica |
| Resumo: | The microstructure design and the development of predictive approaches exploiting the transformation-induced plasticity (TRIP) effect require a keen understanding of the kinetics governing the strain-induced martensitic transformation. In this work, in situ high-energy synchrotron X-ray diffraction is applied to track the deformation kinetics of a commercial AISI 301LN metastable austenitic stainless steel in real-time. The kinetics obtained, providing the behaviour of the bulk material during room temperature tension up to a true strain of 0.3, unambiguously reveals the transformation sequence of e and a' martensite which is discussed with respect to the evolution of texture and slip. These results are enhanced with microstructure analysis including electron backscattered diffraction and transmission Kikuchi diffraction. The insights provided shed light on the role of e during a' transformation in metastable austenitic stainless steels and show that the latter is triggered by the general activation of slip. |
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