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Thermal stability of hydrostatically extruded EUROFER 97 steel by Agnieszka T. Krawczynska; Malgorzata Lewandowska; Krzysztof J. Kurzydlowski is a Engineering article available to read on EtoBox.

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EUROFER 97 steel is a candidate structural material for the future fusion power reactors, as well as for the European Test Blanket Modules (TBMs) to be tested in ITER. In the reported study, the microstructure of EUROFER 97 was modified by hydrostatic extrusion (HE) which reduced the grain size from 400 to 86 nm and that of the carbide particles from 111 to 75 nm. The changes in the microstructure significantly improved the strength of the extruded samples. However, it is important that the enhanced properties of nanostructured materials are stable over the required range of intended service temperature. The thermal stability of the nanostructured EUROFER steel was evaluated by subjecting the hydrostatically extruded samples to annealing at temperatures ranging from 473 to 1073 K (200-800 • C) for 1 h. Tensile tests and microhardness measurements with a 200 g load were carried out on the annealed samples to determine the effect of the heat treatment. The results show that the highest microhardness (403 HV 0.2 ) was achieved for samples annealed at 673 K. However, the tensile and yield strength decreased at the higher temperature of 873 K and the total elongation increased to 15%, c

Who reads Thermal stability of hydrostatically extruded EUROFER 97 steel?

Author

Agnieszka T. Krawczynska; Malgorzata Lewandowska; Krzysztof J. Kurzydlowski

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0920-3796)

Published

2009

Language

EN

Field

Engineering (Physical Sciences)