Experimental study of hydrogen trapping by carbides in low alloyed steels using Atom Probe Tomography

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dc.contributor.authorMoritz, Ludwig
dc.contributor.departmentChalmers tekniska högskola / Institutionen för fysiksv
dc.contributor.departmentChalmers University of Technology / Department of Physicsen
dc.contributor.examinerThuvander, Mattias
dc.contributor.supervisorJakob, Severin
dc.date.accessioned2024-09-23T10:04:38Z
dc.date.available2024-09-23T10:04:38Z
dc.date.issued2024
dc.date.submitted
dc.description.abstractHydrogen embrittlement (HE) of high-strength low-alloy (HSLA) steels is a big problem. Several options are known to prevent/delay the embrittlement of the steels. One option is to trap the hydrogen at or inside the carbides. This could be interpreted as an energetic interaction, as the nano-sized carbides contribute to the mechanical strength of the material. This work investigates three different low alloyed steels, named in the thesis Steel-1, Ti-steel and V-steel. For the electrochemical D loading process, a 0.1M NaOH in D2O is used. The specimens are transferred at room temperature (RT) to the atom probe (AP). Crystallographic calibration was carried out for all measurements. For Steel-1 in the quenched state, no trapping can be seen. For the annealed specimens, the trapping capability can be argued. The Ti- and V-steel show D trapping. Besides the standard measurement, a room temperature degassing experiment was carried out for the Ti- and V-steel to get a qualitative insight into the strength of the traps.
dc.identifier.coursecodeTIFX05
dc.identifier.urihttp://hdl.handle.net/20.500.12380/308760
dc.language.isoeng
dc.setspec.uppsokPhysicsChemistryMaths
dc.subjectAtom Probe Tomography, Hydrogen Embrittlement, High-strength lowalloy steel, Hydrogen traps, Carbides
dc.titleExperimental study of hydrogen trapping by carbides in low alloyed steels using Atom Probe Tomography
dc.type.degreeExamensarbete för masterexamensv
dc.type.degreeMaster's Thesisen
dc.type.uppsokH
local.programmeMaterials engineering (MPAEM), MSc
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