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Hydrogen-Assisted Cracking Investigated by In Situ Electrochemical Micro-Cantilever Bending Test
(Doctoral theses at NTNU;2018:212, Doctoral thesis, 2018)Most high strength and high performance alloys experience a premature rupture and loss in the ductility when exposed to hydrogen. The interaction of hydrogen with dislocations and other microstructural defects such as ... -
Hydrogen-Assisted Fatigue Crack Growth in Ferritic Steels
(Doctoral theses at NTNU;2019:251, Doctoral thesis, 2019) -
Hydrogen-assisted fatigue crack growth in ferritic steels – a fractographic study
(Journal article; Peer reviewed, 2018)Fatigue crack growth (FCG) behavior of a Fe-3wt.%Si ferritic alloy under different environmental conditions using in-situ electrochemical (cathodic) hydrogen (H) charging has been investigated. Three frequencies have been ... -
Hydrogen-Based Iron Recovery from Bauxite Residue
(Bachelor thesis, 2022)Valorisering av bauksittavfall er essensielt for bærekraftig produksjon av aluminium, og undersøkes videre i denne bacheloroppgaven. Hydrogenreduksjon av jernoksider i en blanding av bauksitt-avfall og kalkstein ble studert ... -
Hydrogen-Based Iron Recovery from Bauxite Residue
(Bachelor thesis, 2022)Valorisering av bauksittavfall er essensielt for bærekraftig produksjon av aluminium, og undersøkes videre i denne bacheloroppgaven. Hydrogenreduksjon av jernoksider i en blanding av bauksitt-avfall og kalkstein ble studert ... -
Hydrogen-chlorine fuel cell for production of hydrochloric acid and electric power : chlorine kinetics and cell design
(Doktoravhandlinger ved NTNU, 1503-8181; 2005:932005:70, Doctoral thesis, 2005)This thesis work is the continuation and final part of a joint project between the Department of Materials Technology, NTNU and Norsk Hydro Research Center in Porsgrunn, looking at the possibility of using fuel cells for ... -
Hydrogen-enhanced cracking revealed by in situ micro-cantilever bending test inside environmental scanning electron microscope
(Journal article, 2017)To evaluate the hydrogen (H)-induced embrittlement in iron aluminium intermetallics, especially the one with stoichiometric composition of 50 at.% Al, a novel in situ micro-cantilever bending test was applied within an ... -
Hydrogen-enhanced fatigue crack growth behaviors in a ferritic Fe-3wt%Si steel studied by fractography and dislocation structure analysis
(Journal article; Peer reviewed, 2019)The effect of hydrogen (H) on the fatigue behavior is of significant importance for metallic structures. In this study, the hydrogen-enhanced fatigue crack growth rate (FCGR) tests on in-situ electrochemically H-charged ... -
Hydrogen-enhanced fatigue crack growth in a single-edge notched tensile specimen under in-situ hydrogen charging inside an environmental scanning electron microscope
(Journal article; Peer reviewed, 2019)Fatigue crack growth (FCG) test was done on a pre-cracked single-edge notched tensile (SENT) specimen with oligocrystalline ferritic structure. Innovative in-situ hydrogen (H)- charging by plasma inside an environmental ... -
Hydrogen-enhanced grain boundary vacancy stockpiling causes transgranular to intergranular fracture transition
(Journal article; Peer reviewed, 2022)The attention to hydrogen embrittlement (HE) has been intensified recently in the light of hydrogen as a carbon-free energy carrier. Despite worldwide research, the multifaceted HE mechanism remains a matter of debate. ... -
Hydrogen-enhanced intergranular failure of sulfur-doped nickel grain boundary: In situ electrochemical micro-cantilever bending vs. DFT
(Peer reviewed; Journal article, 2020)Intergranular failure of nickel (Ni) single grain boundaries (GBs) owing to the segregation of sulfur (S), hydrogen (H), and their co-segregation has been investigated by employing micro-cantilever bending tests and density ... -
Hydrogen-induced cracking and hydrogen embrittlement of Ni2MnGa FSMAs
(Journal article; Peer reviewed, 2010)Hydrogen-induced cracking and hydrogen embrittlement of Ni50Mn30Ga20 ferromagnetic shape memory alloys (FSMAs) were studied through indentation and tension experiments supplemented with in situ observation. The results ... -
Hydrogen-induced degradation behavior of nickel alloy 625, studied using multiscale in-situ experiments
(Doctoral theses at NTNU;2023:435, Doctoral thesis, 2023)Nickel-based alloys are widely used in the oil and gas industries as safety critical components owing to its high strength and corrosion resistance properties. However, they are susceptible to hydrogen embrittlement (HE), ... -
Hydrogen-induced transgranular to intergranular fracture transition in bi-crystalline Nickel
(Peer reviewed; Journal article, 2021)It is known that hydrogen can influence the dislocation plasticity and fracture mode transition of metallic materials, however, the nanoscale interaction mechanism between hydrogen and grain boundary largely remains illusive. ... -
Hydrogen-material interactions on austenitic and super duplex stainless steels
(Doctoral theses at NTNU;2022:120, Doctoral thesis, 2022)The interaction between hydrogen and structural materials has been intensively studied for many years. In this PhD thesis the effect of hydrogen on the mechanical properties of two stainless steels has been investigated ... -
Hydrogen-microvoid interactions at continuum scale
(Journal article; Peer reviewed, 2018)Experimentally, it has been shown that hydrogen can either enhance the internal necking failure or induce internal shearing failure of microvoids. In this study, the numerical investigation of hydrogen-microvoid interactions ... -
Hydrogen-Powered Service Vessel for the Norwegian Fish Farming Industry
(Bachelor thesis, 2019)Denne bacheloroppgaven har tatt sikte på å sammenligne et hydrogen-brenselscellesystem, et batterisystem, og en kombinasjon av de to til å drifte en servicekatamaran, med navn Fosna Orion. Fosna Orion brukes i den norske ... -
Hydrogenation of CO to olefins over a supported iron catalyst on MgAl2O4 spinel: effects of the spinel synthesis method
(Journal article; Peer reviewed, 2020) -
Hydrogeological Analysis of the Tellnes Mine, Norway
(Master thesis, 2017)The main purpose of this MSc thesis work is to connect hydrogeological features of the mine which can be used to develop a Hydrogeological Model of the Mine. The analyses have been mainly focusing on the three subjects; ... -
Hydrogeologiske forhold på Svelvik CO2 feltlaboratorium og ved Svelvikryggen - Med fokus på grunnvannsstrømning i RS2, tidevannsforhold og vannkjemi
(Master thesis, 2023)Svelvikryggen er en glasifluvial avsetning som ligger i Drammensfjorden ved Svelvik. Over den åpne og den lukkede akviferen på Svelvikryggen befinner det seg i dag et CO2 feltlaboratorium som SINTEF eier. Der forskes det ...