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SENSIBILITE DE L'ACIER MARTENSITIQUE Z10CDNbV9-1 A LA FRAGILISATION PAR LES METAUX LIQUIDES

Abstract : The 9% chromium martensitic steel Z10CDNbV9-1 is a potential candidate for the structural material of the future ADS hybrid reactors where it should be in contact with liquid lead or the eutectic lead-bismuth. The aim of the present study is to evaluate the range of risks of liquid metal embrittlement. If the steel, submitted to its standard heat treatment, seems to be immune to the liquid metal embrittlement, a special combination of microstructural effects and test conditions can trigger a sudden embrittlement so that the usually ductile steel behaves as a brittle material in contact with liquid metals. The mechanism of this embrittlement keys on the reduction of the surface energy induced by liquid metal adsorption and does not involve any diffusion process. The understanding of the embrittlement outlined here lies on the brittle failure theory in ductile materials and on some common fracture mechanics concepts.
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Contributor : Gregory Nicaise <>
Submitted on : Monday, February 8, 2010 - 10:59:55 AM
Last modification on : Friday, October 23, 2020 - 4:38:14 PM
Long-term archiving on: : Friday, June 18, 2010 - 5:40:22 PM

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  • HAL Id : tel-00454185, version 1

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Gregory Nicaise. SENSIBILITE DE L'ACIER MARTENSITIQUE Z10CDNbV9-1 A LA FRAGILISATION PAR LES METAUX LIQUIDES. Mécanique [physics.med-ph]. Université des Sciences et Technologie de Lille - Lille I, 2001. Français. ⟨tel-00454185⟩

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