Tensile strength of MgO-graphite based refractories: Effect of anisotropy and specimen size
Oxide-graphite refractories represent the new paradigm of materials for extreme environments since 1970's: materials that resist thanks to “in situ” microstructural changes. The analysis of post-mortem linings necessitates the use of small specimens because main microstructural changes occur wi...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión enviada para evaluación y publicación |
| Fecha de publicación: | 2024 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/376519 |
| Acceso en línea: | http://hdl.handle.net/10261/376519 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85209237727&doi=10.1016%2fj.ceramint.2024.10.036&partnerID=40&md5=d92f29824f4b13707dda765d1939872c |
| Access Level: | acceso abierto |
| Palabra clave: | Anisotropy FPZ Fracture process zone MgO-Graphite refractories Quasi-brittle fracture Specimen size Tensile strength |
| Sumario: | Oxide-graphite refractories represent the new paradigm of materials for extreme environments since 1970's: materials that resist thanks to “in situ” microstructural changes. The analysis of post-mortem linings necessitates the use of small specimens because main microstructural changes occur within the matrix, exhibiting zonal distributions relatively small compared to maximum aggregate sizes. In this paper the minimized tensile strength of discs (diameter = 18 mm, width = 8 mm) tested in diametral compression is addressed for commercial materials representative of the typical microstructures. Effects of aggregate and graphite sizes, graphite anisotropy and size of the specimens on the quasi-brittle fracture of these heterogeneous materials are discussed. © 2024 Elsevier Ltd and Techna Group S.r.l. |
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