Microtomographic assessment of damage in P91 and E911 steels after long-term creep

Abstract : Two flat hollow cylinders made of martensitic 9 wt.% Cr steels were creep deformed under in-service conditions typical of steam pipes at fossil-fuel fired power plants. Damage in the tubes was assessed through synchrotron X-ray microtomography by evaluating the shape, size and spatial-distribution of voids. The analysis of the size distribution of non-coalesced voids suggested that void growth is controlled by the plasticity constrained diffusional mechanism, a hypothesis verified by micromechanical simulations. A much higher void density was found in steel grade P91 compared to E911.
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International Journal of Materials Research, 2014, 105 (7), pp.621-627. 〈10.3139/146.111056〉
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https://hal-emse.ccsd.cnrs.fr/emse-01066931
Contributeur : Géraldine Fournier-Moulin <>
Soumis le : lundi 22 septembre 2014 - 16:09:24
Dernière modification le : mercredi 29 novembre 2017 - 10:07:14

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Loïc Renversade, Herbert Ruoff, Karl Maile, Federico Sket, András Borbély. Microtomographic assessment of damage in P91 and E911 steels after long-term creep. International Journal of Materials Research, 2014, 105 (7), pp.621-627. 〈10.3139/146.111056〉. 〈emse-01066931〉

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