Počet záznamů: 1
Mechanical behaviour of ferritic ODS steels - Temperature dependancy and history
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SYSNO ASEP 0379831 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Mechanical behaviour of ferritic ODS steels - Temperature dependancy and history Tvůrce(i) Fournier, B. (FR)
Steckmeyer, A. (FR)
Rouffié, A.-L. (FR)
Malaplate, J. (FR)
Garnier, J. (FR)
Ratti, M. (FR)
Wident, P. (FR)
Ziolek, L. (FR)
Tournie, I. (FR)
Rabeau, V. (FR)
Gentzbittel, J.M. (FR)
Kruml, Tomáš (UFM-A) RID, ORCID
Kuběna, Ivo (UFM-A) RID, ORCIDCelkový počet autorů 13 Zdroj.dok. Journal of Nuclear Materials. - : Elsevier - ISSN 0022-3115
Roč. 430, 1-3 (2012), s. 142-149Poč.str. 8 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova ODS steels ; fatigue ; fracture mechanics Vědní obor RIV JL - Únava materiálu a lomová mechanika Institucionální podpora UFM-A - RVO:68081723 UT WOS 000310940700021 DOI https://doi.org/10.1016/j.jnucmat.2012.05.048 Anotace Ferritic 14%Cr and 18%Cr ODS steels produced at CEA in round bars or plates were tested mechanically. The present paper reports results obtained in tension, impact, fatigue, creep and toughness tests. These tests were carried out at various temperatures and in different directions. These materials show a pronounced anisotropy at all tested temperatures. No matter the loading, the transversal direction is always found to be far less resistant than the longitudinal one. This anisotropy is mainly observed in terms of damage mechanisms, with intergranular fracture preferentially occurring along the extrusion direction. This intergranular fracture mode leads to very low and anisotropic toughness values and to the absence of tertiairy creep stage, pointing out the unstable nature of fracture, even at high temperature. The unrealistically high values of the Norton exponent measured in creep suggests the existence of a threshold stress, which is consistent with the mainly kinematic nature of the stress as revealed by fatigue tests. Pracoviště Ústav fyziky materiálu Kontakt Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Rok sběru 2013
Počet záznamů: 1