DataVXJournal of Nuclear MaterialsPaper
journal article·2013-01

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

B. Margolin, B. Gurovich, V. Fomenko, V. Shvetsova, A. Gulenko, D. Zhurko, M. Korshunov, E. Kuleshova

Journal of Nuclear Materials· Volume 432· Issue 1-3
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Source abstract

Abstract

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.
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Research context

OpenAlex topics: Fatigue and fracture mechanics · Fusion materials and technologies · Nuclear Materials and Properties

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References (36)

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