Blar i Institutt for materialteknologi på tittel
Viser treff 1795-1814 av 2540
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A Pragmatic Model for Alumina Feeding
(Peer reviewed; Journal article, 2022)In this paper, we demonstrate how we can develop a coarse-grained model for the alumina distribution in an aluminium reduction cell. The model is designed to have the potential of being a part of a control system or play ... -
A Pragmatic Model for Bath Temperature Evolution During Alumina Feeding
(Peer reviewed; Journal article, 2023)In this paper, we extend the pragmatic model for alumina feeding, presented in Johansen et al. Light metals 2022, to treat the associated evolution of bath temperature. The underlying idea of the framework is to reduce its ... -
Pre-reduction Behaviour of Manganese Ores in H2 and CO Containing Gases
(Peer reviewed; Journal article, 2020)This paper presents results of a study conducted on the pre-reduction of Assmang and Comilog ores with gases of CO+CO2 and CO+H2+CO2 up to 1 000°C. Non-isothermal experiments were carried out in a vertical thermogravimetric ... -
Pre-reduction of United Manganese of Kalahari Ore in CO/CO<inf>2</inf>, H<inf>2</inf>/H<inf>2</inf>O, and H<inf>2</inf> Atmospheres
(Peer reviewed; Journal article, 2023)The incorporation of hydrogen, which is a relatively unexplored reductant used during ferromanganese (FeMn) production, is an attractive approach to lessen atmospheric gaseous carbon release. The influence of hydrogen on ... -
Precipitation and strengthening modeling for disk-shaped particles in aluminum alloys: Size distribution considered
(Journal article, 2018)For an ICME (Integrated Computational Material Engineering) modeling framework used for the age-hardening aluminum alloy design and heat treatment parameters optimization, it is critical to take into account the geometric ... -
Precipitation behaviour and recrystallisation resistance in aluminum alloys with additions of hafnium, scandium and zirconium
(Doktoravhandlinger ved NTNU, 1503-8181; 2005:145, Doctoral thesis, 2005)The overall objective of this work has been to develop aluminium alloys, which after hot and cold deformation are able to withstand high temperatures without recrystallising. This has been done by investigating aluminium ... -
Precipitation Hardening in Ferroelectric Ceramics
(Peer reviewed; Journal article, 2021)Domain wall motion in ferroics, similar to dislocation motion in metals, can be tuned by well-concepted microstructural elements. In demanding high-power applications of piezoelectric materials, the domain wall motion is ... -
Precipitation hardening in ferroelectric ceramics
(Peer reviewed; Journal article, 2021)Domain wall motion in ferroics, similar to dislocation motion in metals, can be tuned by well-concepted microstructural elements. In demanding high-power applications of piezoelectric materials, the domain wall motion is ... -
Precipitation hardening in two Al-Mn-Cu-Mg-Si alloys aimed for brazed heat exchangers
(Master thesis, 2019)FA7850 and FA7933 er to forskjellige aluminiumslegeringer med herdingspotensial. Beregninger viser at en høyere andel av herdningspresipitater skal være tilstede i FA7933 enn i FA7850 ved likevekt ved 100 °C. En høyere ... -
Precipitation hardening of a 6082 aluminium alloy upon application of direct electrical current
(Master thesis, 2018)The research deals with the investigation of the precipitation hardening response of a 6082 aluminium alloy with the application of direct electrical current. An experimental setup was designed and built to conduct experiments ... -
Precipitation in an A356 foundry alloy with Cu additions - A transmission electron microscopy study
(Journal article; Peer reviewed, 2019)The influence of different Cu addition levels on the age hardening and precipitation behaviors in an Al356 foundry alloy during artificial aging treatment has been systematically studied. A detailed characterization of the ... -
Precipitation of dispersoids containing Mn and/or Cr in Al-Mg-Si-alloys
(Dr. ingeniøravhandling; 2000:53, Doctoral thesis, 2000) -
Precipitation of Non-Spherical Particles in Aluminum Alloys Part I: Generalization of the Kampmann–Wagner Numerical Model
(Journal article, 2015)Particles precipitated during aging treatments often have non-spherical shapes, e.g., needles or plates, while in the classical Kampmann–Wagner Numerical (KWN) precipitation model, it is assumed that the particles are of ... -
Precipitation, mechanical properties and early slant ductile fracture in cyclic and naturally aged Al-Zn-Mg(-Cu) alloys
(Peer reviewed; Journal article, 2022)Natural and artificial ageing treatments are compared with ageing by cyclic deformation at room temperature. Atom probe tomography and transmission electron microscopy revealed that a fine distribution of GP-zones, was ... -
Precipitation, strength and work hardening of age hardened aluminium alloys
(Journal article; Peer reviewed, 2015)The strength and work hardening of age hardened AA6063 and AA6082 alloys have been investigated in terms of a detailed characterization of precipitate and dislocation structures obtained by TEM and SEM. Tensile and compression ... -
Predicting phase transitions and rotational dynamics in the plastic crystals [(CH3)4N][FeCl4] and [(CH3)4N] [FeBr4] by using ab initio molecular dynamics with machine learned force fields
(Master thesis, 2023)Plastiske krystaller er en ny materialklasse med glimrende piezoelektriske og ferroelektriske egenskaper, i tillegg til å være myke og fleksible grunnet rotasjonsfriheten til molekylene. Dette gjør dem til lovende kandidater ... -
Prediction of mineral scale formation in wet gas condensate pipelines and in meg (mono ethylene glycol) regeneration plants
(Doktoravhandlinger ved NTNU, 1503-8181; 2006:137, Doctoral thesis, 2006)Gas hydrate formation is a serious problem in the oil and gas industry, since its formation can plug wells and prevent production. The gas hydrate is a crystalline solid with a natural gas molecule surrounded by a cage of ... -
Predictive modeling of glass forming ability in the Fe-Nb-B system using the CALPHAD approach
(Journal article, 2017)Accurate values needed for the most commonly used indicators of good Glass Forming Ability (GFA) in alloys, i.e. the liquidus (Tl), crystallization (Tx) and glass transition (Tg) temperatures, are only available after ... -
Preliminary Design and Modeling of a System for Collecting Dead Fish in Offshore Aquaculture
(Bachelor thesis, 2023)Denne bacheloroppgaven tar sikte på å håndtere problemet med innsamling og ensilering av dødfisk ved å utvikle et grunnleggende design for offshore fiskeoppdrett. Dette gjøres ved å best mulig definere driftsforholdene ... -
Preliminary Experimental Study of the Thermal Stability and Chemical Reactivity of the Phosphate-Based Binder used in Al2O3-Based Ceramic Foam Filters (CFFs)
(Journal article; Peer reviewed, 2018)Filtration of liquid aluminium is widely used in the industry for the removal of inclusions, and Ceramic Foam Filters (CFFs) are often the filtration media of choice. It is known that PH3 (phosphine) can be released from ...