Blar i Fakultet for ingeniørvitenskap (IV) på tidsskrift "Scripta Materialia"
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CuO/Cu based superhydrophobic and self-cleaning surfaces
(Journal article; Peer reviewed, 2016)CuO/Cu based superhydrophobic surfaces with ordered micro/nanostructures have been prepared via a solution-immersion process combining with photolithography and argon ion beam etching. CuO nanoneedles grow only inside ... -
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 ... -
Hydrogen embrittlement effect observed by in-situ hydrogen plasma charging on a ferritic alloy
(Journal article; Peer reviewed, 2018)To study the hydrogen embrittlement (HE) effect, a novel in-situ slow strain rate tensile test together with in-situ hydrogen (H) charging by H-plasma was conducted in an environmental scanning electron microscope (ESEM). ... -
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. ... -
In-situ micro-cantilever bending test in environmental scanning electron microscope: Real time observation of hydrogen enhanced cracking
(Journal article, 2017)A novel approach of in-situ micro-cantilever bending tests is introduced, integrating nanoindentation and environmental scanning electron microscopy (ESEM) to elucidate hydrogen embrittlement (HE) in FeAl. Bending tests ... -
In-situ observation of martensitic transformation in an interstitial metastable high-entropy alloy during cathodic hydrogen charging
(Journal article; Peer reviewed, 2019)We show for the first time that a critical amount of dissolved hydrogen can induce a phase transformation from γ-austenite to ε-martensite in an interstitial metastable high-entropy alloy. This is demonstrated by in-situ ... -
Phenomenological approach towards modelling the acoustic emission due to plastic deformation in metals
(Journal article; Peer reviewed, 2019)Considering acoustic emission (AE) as a phenomenon reflecting the elastic energy dissipation process in deforming metals, a simple yet self-consistent model is proposed to account for the AE behaviour accompanying ... -
A predictive model unifying hydrogen enhanced plasticity and decohesion
(Peer reviewed; Journal article, 2022)The detrimental effect of hydrogen on metals which manifests itself as a transition from a ductile to a brittle failure mode is, for the first time, incorporated into a unified continuum-scale predictive framework. The ... -
Probing elementary dislocation mechanisms of local plastic deformation by the advanced acoustic emission technique
(Journal article; Peer reviewed, 2018)To gain a deeper insight into fundamental processes of localised plastic deformation, we propose a new strategy for micro-mechanical testing combining the micro-scale scratching and analysis of low amplitude acoustic ... -
Resolving the hydrogen effect on dislocation nucleation and mobility by electrochemical nanoindentation
(Journal article; Peer reviewed, 2012) -
A simple method enabling efficient quantitative analysis of the Portevin–Le Chatelier band characteristics
(Peer reviewed; Journal article, 2022)Localized deformation bands are often observed in materials exhibiting the Portevin–Le Chatelier (PLC) effect. However, efficient quantitative analysis of PLC bands remains challenging. A novel method is thus proposed in ... -
Substrate slip steps promote cracking and buckling of thin brittle film
(Journal article; Peer reviewed, 2019)Cracking and buckling are the two major failure phenomena of brittle film/metal substrate structures. Herein, by depositing titanium nitride brittle films with strong and poor adhesion on stainless steel substrates, we ...