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EFFECT OF MICROSTRUCTURE AND SURFACE FINISH ON LOCALIZED CORROSION PERFORMANCE OF SUPER DUPLEX STAINLESS STEEL IN SEAWATER
(Master thesis, 2014)Corrosion resistant alloys (CRAs) used in subsea pressure-retaining components must be compatible with production fluids and resistant to pitting and crevice corrosion in seawater. Whereas materials selection in production ... -
Effect of microstructure on the corrosion resistance of duplex stainless steels: Materials performance maps
(Journal article; Peer reviewed, 2017)Although super duplex stainless steels (25Cr SDSS) are extensively used in oil and gas production due to their excellent combination of mechanical properties and corrosion resistance they are susceptible to the precipitation ... -
Effect of neat and reinforced polyacrylonitrile nanofibers incorporation on interlaminar fracture toughness of carbon/epoxy composite
(Journal article; Peer reviewed, 2018)This paper presents an experimental investigation on fracture behavior of epoxy resin-carbon fibers composites interleaved with both neat polyacrylonitrile (PAN) nanofibers and Al2O3-PAN nanofibers. In particular, the paper ... -
Effect of nickel in solid solution on the hydrogen embrittlement resistance of low alloy steels
(Doctoral theses at NTNU;2018:231, Doctoral thesis, 2018)The ever-increasing demand and consumption of energy in the world is depleting conventional oil and gas reserves. Nickel alloying improves mechanical and technological properties of low alloy steels (LAS), but is limited ... -
Effect of nickel on hydrogen permeation in ferritic/ pearlitic low alloy steels
(Journal article; Peer reviewed, 2018)Nickel offers several beneficial effects as an alloying element to low alloy steels. However, it is, in the oil and gas industry, limited by part 2 of the ISO 15156 standard to a maximum of 1 wt% due to sulfide stress ... -
Effect of Nickel on the Hydrogen Stress Cracking Resistance of Ferritic/Pearlitic Low Alloy Steels
(Journal article; Peer reviewed, 2018)Nickel additions to low alloy steels improve mechanical and technological properties. However, Part 2 of ISO Standard 15156 limits the nickel content to a maximum of 1 wt% in oil and gas environments containing H2S because ... -
The effect of non-uniform pitch length and spiraling pathway on the mechanical properties of coiled carbon nanotubes
(Peer reviewed; Journal article, 2023)Coiled carbon nanotubes (CCNTs) exhibit exceptional mechanical, electrical, and thermal properties, making them suitable for diverse applications such as nanoelectromechanical devices. Here, classic molecular dynamics (MD) ... -
Effect of Plastic Deformation and Microstructure on Hydrogen Diffusion in Steel
(Master thesis, 2015)This work has been part of the ROP (Repair Contingency of Pipelines) project executed by SINTEF, where Vigdis Olden is project lead. The main content of this report is the execution of hydrogen permeation tests on Fe3wt.%Si ... -
The effect of plastic deformation on hydrogen diffusion in nickel Alloy 625
(Peer reviewed; Journal article, 2022)Recently, several hydrogen-assisted failures have been reported on different nickel alloys used in the subsea oil and gas industries. It is thus essential to correlate hydrogen uptake and diffusion behavior with stress ... -
Effect of Processing Parameters on the Relative Density of AlSi10Mg Processed by Laser Powder Bed Fusion
(Chapter, 2019)In order for a material processed by laser powder bed fusion (LPBF) to achieve the desired mechanical properties, the relative density of the material should be as high as possible. In this study, the effect of various ... -
Effect of Processing Parameters on the Relative Density of AlSi10Mg Processed by Laser Powder Bed Fusion
(Journal article, 2019)In order for a material processed by laser powder bed fusion (LPBF) to achieve the desired mechanical properties, the relative density of the material should be as high as possible. In this study, the effect of various ... -
Effect of production/process parameters on corrosion properties of AM AISI 316L
(Master thesis, 2021)The evolution of new techniques for processing materials is being of interest for the current industry. Some scientific researchers have focused their studies on knowing more about them, and the results show a promising ... -
Effect of Residual Stresses on Fracture Resistance of Arctic Structures
(Master thesis, 2013)In integrity assessments, residual stresses have a significant effect on the crack driving force. In fracture assessments according to BS 7910 residual stresses are treated conservatively, and is often assumed to be equal ... -
Effect of selective laser melting process parameters on microstructural and mechanical properties of TiC–NiCr cermet
(Peer reviewed; Journal article, 2020)TiC–NiCr cermet was in situ synthesized through selective laser melting (SLM) process using a Ti, C, and Ni80Cr20 powder mixture. Feedstock powder was prepared using high energy milling and mixing for a total time of 15 ... -
Effect of Solidification Time on Microstructural, Mechanical and Fatigue Properties of Solution Strengthened Ferritic Ductile Iron
(Journal article; Peer reviewed, 2019)Microstructural, mechanical, and fatigue properties of solution strengthened ferritic ductile iron have been evaluated as functions of different solidification times. Three types of cast samples with increasing thickness ... -
Effect of Stretching on Springback in Rotary Stretch Bending of Aluminium Alloy Profiles
(Journal article, 2021)Stretch bending is widely used for manufacturing profile-type parts. However, one of the challenges faced by the bending-type forming processes is springback, which significantly reduces the dimensional accuracy of formed ... -
Effect of structural heterogeneity of 17Mn1Si steel on the temperature dependence of impact deformation and fracture
(Journal article; Peer reviewed, 2017)The paper deals with a theoretical and experimental study of the relationship between the microstructural parameters, mechanical properties, and impact deformation and fracture of steels using the example of 17Mn1Si pipe ... -
The effect of surface roughness and topography on the organic coating/steel interface stability
(Doctoral theses at NTNU;2020:304, Doctoral thesis, 2020)The study in this thesis, focused on the effect of surface roughness and topography on the organic coating/steel interface stability in humid air and corrosive conditions. A strong correlation between roughness, Rz, and ... -
The effect of surface treatment and orientation on fatigue crack growth rate and residual stress distribution of wire arc additively manufactured low carbon steel components
(Peer reviewed; Journal article, 2023)The directed energy deposition (DED) processes, such as laser metal deposition or Wire Arc Additive Manufacturing (WAAM), are gradually becoming the preferred method for fabrication of large-scale components using metal ...