Hydrogen-Induced Micro-Strain Evolution in Super Duplex Stainless Steel—Correlative High-Energy X-Ray Diffraction, Electron Backscattered Diffraction, and Digital Image Correlation
نویسندگان
چکیده
The local lattice strain evolution during electrochemical hydrogen charging and mechanical loading in 25Cr-7Ni super duplex stainless steel were measured in-situ using synchrotron high-energy x-ray diffraction. Post-mortem electron backscattered diffraction analysis showed that the austenite phase underwent plastic deformation near-surface due to hydrogen-enhanced localized plasticity, where ferrite experienced hardening. In bulk regions, was softer phase, remained stiff. Digital image correlation of micrographs recorded, , tensile testing revealed intensified localization which eventually led crack initiation. absorption caused occur primarily grains.
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ژورنال
عنوان ژورنال: Frontiers in Materials
سال: 2022
ISSN: ['2296-8016']
DOI: https://doi.org/10.3389/fmats.2021.793120