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Journal Articles Corrosion Science Year : 2023

Investigation of quasi-cleavage in a hydrogen charged maraging stainless steel

Abstract

Slow strain rate tests on hydrogen-containing specimens of PH13–8Mo maraging stainless steel showed H-assisted subcritical quasi-cleavage cracking, accelerating material failure. Fractographic analysis revealed that quasi-cleavage is composed of flat brittle areas and rougher areas. Electron backscatter diffraction (EBSD) was performed on a secondary subcritically grown crack. High resolution EBSD showed significant crystal lattice rotation, hence consequential plastic deformation, concentrated between the main crack tip and the cracks located ahead of it. Quasi-cleavage consisted of {100} cleavage cracks connected by ductile ridges, suggesting a discontinuous mechanism, involving re-initiation of new cleavage cracks ahead the main crack tip.

Dates and versions

emse-04119602 , version 1 (06-06-2023)

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Jolan Bestautte, Szilvia Kalácska, Denis Béchet, Zacharie Obadia, Frédéric Christien. Investigation of quasi-cleavage in a hydrogen charged maraging stainless steel. Corrosion Science, 2023, 218, pp.111163. ⟨10.1016/j.corsci.2023.111163⟩. ⟨emse-04119602⟩
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