Effect of oxygen on liquid sodium embrittlement of T91 martensitic steel

Hémery, S.; Auger, T.; Courouau, Jean-Louis; Balbaud-Célérier, F.

doi:10.1016/j.corsci.2013.07.018

Cited by 32 publications

(19 citation statements)

References 35 publications

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“…It is possible for liquid metal atoms to penetrate into the cracks after rupture and before extracting the broken specimens from melt. Some advanced analysis techniques such as FIB and TEM are used to find the penetration of LBE into martensitic laths [31].…”

Section: Discussionmentioning

confidence: 99%

Effects of temperature and strain rate on the tensile behaviors of SIMP steel in static lead bismuth eutectic

Liu

Yan

Sha

et al. 2016

Journal of Nuclear Materials

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Section: Discussionmentioning

confidence: 99%

Effects of temperature and strain rate on the tensile behaviors of SIMP steel in static lead bismuth eutectic

Liu

Yan

Sha

et al. 2016

Journal of Nuclear Materials

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“…Experimental 91 martensitic steel, AISI 1010 ferritic-pearlitic steel and AISI 304L austenitic steel are sensitive to LME as shown in [3,6,[8][9][10]. As a consequence, those steels have been selected for study of the LME crack path as a function of the microstructure.…”

Section: Crack Path In Lmementioning

confidence: 99%

“…Due to its high reactivity, tests in sodium are performed under a high purity argon atmosphere (oxygen content <5ppm and moisture content <20ppm). Further details about the test procedure are given in [9] for sodium tests and in [6] for indium and LBE tests.…”

Section: Steelmentioning

confidence: 99%

Crack path in liquid metal embrittlement: experiments with steels and modeling

Auger¹,

Hémery²,

Bourcier³

et al. 2015

Frattura Ed Integrità Strutturale

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We review the recent experimental clarification of the fracture path in Liquid Metal Embrittlement with austenitic and martensitic steels. Using state of the art characterization tools (Focused Ion Beam and Transmission Electron Microscopy) a clear understanding of crack path is emerging for these systems where a classical fractographic analysis fails to provide useful information. The main finding is that most of the cracking process takes place at grain boundaries, lath or mechanical twin boundaries while cleavage or plastic flow localization is rarely the observed fracture mode. Based on these experimental insights, we sketch an ongoing modeling strategy for LME crack initiation and propagation at mesoscopic scale. At the microstructural scale, crystal plasticity constitutive equations are used to model the plastic deformation in metals and alloys. The microstructure used is either extracted from experimental measurements by 3D-EBSD (Electron Back Scattering Diffraction) or simulated starting from a Voronoï approach. The presence of a crack

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“…This type of oxide was also observed on T91, 15-15Ti, and 316L(N) steel in a 550°C sodium environment with 1-10 wppm of controlled oxygen [31,32]. In a recent study, 48 h of exposure in 450°C liquid sodium with a low oxygen concentration was observed to result in a 0.2-lm-thick NaCrO 2 layer on the surface of a T91 specimen, with longer exposure times producing a thicker layer [33]. This suggests that in the present study, intergranular oxidation occurred in the case of the Gr.…”

Section: Resultsmentioning

confidence: 78%