A closer look at the fracture toughness of ferritic/martensitic steels

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A closer look at the fracture toughness of ferritic/martensitic steels. / Lucon, Enrico; Scibetta, Marc (Peer reviewer).

In: Journal of Nuclear Materials, Vol. 367-370, Part 1, 19.09.2007, p. 575-580.

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Lucon, Enrico ; Scibetta, Marc. / A closer look at the fracture toughness of ferritic/martensitic steels. In: Journal of Nuclear Materials. 2007 ; Vol. 367-370, Part 1. pp. 575-580.

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@article{f4fb2f076d654ca4bdb044b82adfd80e,
title = "A closer look at the fracture toughness of ferritic/martensitic steels",
abstract = "SCK-CEN has characterized the mechanical properties of several ferritic/martensitic steels, both unirradiated and irradiated. Fracture toughness has been evaluated using Charpy impact and fracture mechanics tests. Two safety-related features have emerged: (a) the applicability of the master curve approach (ASTM E1921-05) appears questionable; and (b) irradiation embrittlement is systematically larger when quantified in terms of quasi-static fracture toughness than when measured from Charpy tests. Both issues are examined in detail and possible interpretations are proposed; potential improvements given by the application of more advanced fracture toughness analysis methodologies are discussed. In order to clarify whether the Charpy/fracture toughness difference in embrittlement is due to loading rate effects, dynamic toughness tests have been performed in the unirradiated condition and for two irradiation doses (0.3 and 1.6 dpa). The corresponding dynamic T0 shifts have been compared with the shifts of Charpy and master curve quasi-static transition temperatures. Other possible contributions are examined and discussed.",
keywords = "Fracture toughness, ferritic-martensitic steels",
author = "Enrico Lucon and Marc Scibetta",
year = "2007",
month = sep,
day = "19",
doi = "10.1016/j.jnucmat.2007.03.037",
language = "English",
volume = "367-370, Part 1",
pages = "575--580",
journal = "Journal of Nuclear Materials",
issn = "0022-3115",
publisher = "Elsevier",

}

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TY - JOUR

T1 - A closer look at the fracture toughness of ferritic/martensitic steels

AU - Lucon, Enrico

A2 - Scibetta, Marc

PY - 2007/9/19

Y1 - 2007/9/19

N2 - SCK-CEN has characterized the mechanical properties of several ferritic/martensitic steels, both unirradiated and irradiated. Fracture toughness has been evaluated using Charpy impact and fracture mechanics tests. Two safety-related features have emerged: (a) the applicability of the master curve approach (ASTM E1921-05) appears questionable; and (b) irradiation embrittlement is systematically larger when quantified in terms of quasi-static fracture toughness than when measured from Charpy tests. Both issues are examined in detail and possible interpretations are proposed; potential improvements given by the application of more advanced fracture toughness analysis methodologies are discussed. In order to clarify whether the Charpy/fracture toughness difference in embrittlement is due to loading rate effects, dynamic toughness tests have been performed in the unirradiated condition and for two irradiation doses (0.3 and 1.6 dpa). The corresponding dynamic T0 shifts have been compared with the shifts of Charpy and master curve quasi-static transition temperatures. Other possible contributions are examined and discussed.

AB - SCK-CEN has characterized the mechanical properties of several ferritic/martensitic steels, both unirradiated and irradiated. Fracture toughness has been evaluated using Charpy impact and fracture mechanics tests. Two safety-related features have emerged: (a) the applicability of the master curve approach (ASTM E1921-05) appears questionable; and (b) irradiation embrittlement is systematically larger when quantified in terms of quasi-static fracture toughness than when measured from Charpy tests. Both issues are examined in detail and possible interpretations are proposed; potential improvements given by the application of more advanced fracture toughness analysis methodologies are discussed. In order to clarify whether the Charpy/fracture toughness difference in embrittlement is due to loading rate effects, dynamic toughness tests have been performed in the unirradiated condition and for two irradiation doses (0.3 and 1.6 dpa). The corresponding dynamic T0 shifts have been compared with the shifts of Charpy and master curve quasi-static transition temperatures. Other possible contributions are examined and discussed.

KW - Fracture toughness

KW - ferritic-martensitic steels

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_82963

UR - http://knowledgecentre.sckcen.be/so2/bibref/4434

U2 - 10.1016/j.jnucmat.2007.03.037

DO - 10.1016/j.jnucmat.2007.03.037

M3 - Article

VL - 367-370, Part 1

SP - 575

EP - 580

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

SN - 0022-3115

ER -

ID: 91348