Print Email Facebook Twitter Effect of processing on microstructural features and mechanical properties of a reduced activation ferritic/martensitic EUROFER steel grade Title Effect of processing on microstructural features and mechanical properties of a reduced activation ferritic/martensitic EUROFER steel grade Author Puype, A. (Universiteit Gent) Malerba, L. (SCK•CEN) De Wispelaere, N. (OCAS) Petrov, R.H. (TU Delft (OLD) MSE-3; Universiteit Gent) Sietsma, J. (TU Delft (OLD) MSE-3; Universiteit Gent) Date 2017 Abstract The microstructure of a 9Cr-1W-0.22V-0.09Ta-0.11C reduced activation ferritic/martensitic (RAFM) steel has been investigated after thermo-mechanical rolling with subsequent annealing for 30 min at temperatures of 880 °C, 920 °C, 980 °C and 1050 °C, followed by water quenching. Scanning and transmission electron microscopy investigations and electron backscattered diffraction (EBSD) measurements were performed to determine the microstructural features after the different thermal treatments. Additionally, the microstructure and the mechanical properties of the materials were studied after tempering at 750 °C for 2 h. This study aims to understand microstructural processes that occur in the material during thermo-mechanical treatment and to assess the effect of the microstructure on its strength and toughness, with a view on improving its mechanical performance. Microstructural analysis together with the data from mechanical tests identified the beneficial effect of grain refinement obtained with adequate processing on the ductile-to-brittle transition temperature (DBTT) and on the delay of strength degradation at elevated temperatures. To reference this document use: http://resolver.tudelft.nl/uuid:f663dd77-583f-4df0-8d6f-d9adc7127826 DOI https://doi.org/10.1016/j.jnucmat.2017.07.001 Embargo date 2019-07-08 ISSN 0022-3115 Source Journal of Nuclear Materials, 494, 1-9 Bibliographical note Accepted Author Manuscript Part of collection Institutional Repository Document type journal article Rights © 2017 A. Puype, L. Malerba, N. De Wispelaere, R.H. Petrov, J. Sietsma Files PDF Puype_JNuclMat_2017.pdf 1.43 MB Close viewer /islandora/object/uuid:f663dd77-583f-4df0-8d6f-d9adc7127826/datastream/OBJ/view