Fracture toughness prediction for highly irradiated RPV materials: From test results to RPV integrity assessment

Autor:	M.E. Korshunov, Evgenia Kuleshova, V. A. Shvetsova, D. A. Zhurko, A. G. Gulenko, Boris Margolin, B. A. Gurovich, V. N. Fomenko
Rok vydání:	2013
Předmět:	Nuclear and High Energy Physics Materials science Fracture toughness Nuclear Energy and Engineering Charpy impact test General Materials Science Irradiation Composite material Integrity assessment Neutron irradiation
Zdroj:	Journal of Nuclear Materials. 432:313-322
ISSN:	0022-3115
DOI:	10.1016/j.jnucmat.2012.09.005
Popis:	New fracture toughness data are represented for highly irradiated RPV materials that were obtained by testing standard compact specimens with thickness of 12.5 mm and 25 mm and pre-cracked Charpy specimens machined from the RPV decommissioned. Two advanced engineering methods, the Master Curve and the Unified Curve, are applied for treatment of the test results. Application of the dependence of fracture toughness KJC on test temperature T predicted with the Master Curve and the Unified Curve methods on the basis of surveillance specimens testing is discussed for RPV integrity assessment when the reference KJC(T) curve is recalculated to the crack front length of the postulated flaw that is considerable larger than thickness of surveillance specimens. The prediction of the KJC(T) curve transformation caused by neutron irradiation is considered.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6ce6669d537e93ef35fa46e0e1f9d76c https://doi.org/10.1016/j.jnucmat.2012.09.005 Zobrazit plný text záznamu Full Text from ScienceDirect