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Materials Science
Light Construction, Steel Construction, Timber Construction
Metallic Materials
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QCL-Based Perfluorocarbon Emission Monitoring
Periodic, short-term, extractive sampling with Fourier transform infrared (FTIR) spectrometers is often employed to measure perfluorocarbon (PFC) emissions at aluminum smelters. FTIRs have been routinely deplo...
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Determination of the Effect of Pitch-Impregnation on Cathode Erosion Rate
A number of smelters have adopted or have trialed high density, pitch impregnated cathode blocks as one measure to counter the trend in decreasing cell life due to line current increases. To date the true bene...
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Modeling Texture Evolution of Pure FCC Alloy During Annealing
During the annealing process of deformed materials, static recrystallization is an important phenomenon which can lead to significant texture changes in pure FCC alloy. In this paper, an integrated model was d...
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Theory and Practical Application of Ultrasonic Degassing at J. W. Aluminum
Following the initial molten metal quality studies with the MetalVision MV 20/20 Inclusion Analyzer1,2,3,4, presented previously, the need for more robust molten metal treatment equipment and methods was identifi...
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Processing of Metal Matrix Composites under External Fields and Their Application as Grain Refiner
In an attempt to develop an efficient grain refiner by application of external fields, aluminium-based metal matrix composite Al-Mg-Ti/TiB2, has been processed by mechanical stirring and treated by external field...
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Sustaining Capital of Alumina Refinery Projects — Important but Unloved
Sustaining capital cost / expenditure, abbreviated as sustaining capex or Susex, is a project cost item which is sometimes forgotten and often disliked. To many it is unknown, and it may be (partly) hidden in ...
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Cell Voltage Noise Reduction Based on Wavelet in Aluminum Reduction Cell
For line current fluctuation, cell voltage signals collected in the aluminum electrolysis process have high noise, which has a significant impact on the aluminum reduction cell voltage and precision of the amo...
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Influence of Oxidation on Contact Angle between Liquid Aluminum and Al2O3
Aluminum can be easily oxidized at high temperature so that it is difficult to accurately measure the contact angle between the liquid aluminum and Al2O3 substrate. In the current study, the measurement of the co...
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Through process effects on final Al-sheet flatness
To achieve the desired flatness of rolled aluminium products in ever decreasing tolerances becomes more and more a key challenge. The typical process chain of strip material consists of hot rolling, cold rolli...
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Warm Forming of AA7075-T6 with Direct Electrical Resistance Heating
High-strength aluminum alloy sheet materials are of interest to automobile manufacturers for components that can significantly reduce vehicle mass. But, the practical application of these materials is limited ...
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Load/Displacement and Energy Dissipation Performances of Aluminum and Magnesium Extrusions Subjected to Quasi-Static and Dynamic Loading under Axial Crush and Cutting Deformation Modes
Findings from quasi-static and impact loading of aluminum (AA6082-T6) and magnesium (AZ31B-F) circular extrusions when subjected to crush and cutting modes of deformation are presented. Circular cross sectiona...
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Upgrade of an Existing Fume Treatment Plant at Aluar to Cope Higher Production in the New Open Type Anode Baking Furnaces
Aluar Aluminio Argentino has been operating with two closed type furnaces for the production of baked anodes for more than 35 years. Due to the continuous expansion by amperage increase in the potlines, these ...
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Aspects of Change Management and Process Management at Some Smelters
Many smelters are seeking for pathways to achieve breakthroughs in reducing energy consumption and increasing productivity for survival in difficult situations of high power cost and low metal price. Some smel...
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Bubble Flow in a Static Magnetic Field
A lab-based electrolytic-cell is designed to analyze the effect of external magnetic field on bubble evolution underneath an anode surface. Buckingham Pi theorem is used to provide a complete list of dimension...
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Mass Transfer Reactions Near the Cathode During Aluminium Electrolysis
A laboratory cell was used to determine the current efficiency for aluminium during constant current electrolysis at 0.85 A/cm2. Current efficiencies ranging from ~ 89 – 93 % were obtained. Effects of additions o...
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Study of Busbar Displacement of Aluminum Reduction Cells
With the increase of the cell capacity, the busbar length, the current load in each busbar and the magnetic field intensity around the cell are all increasing consequently, so are the electromagnetic forces on...
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Effects of Roasting Pretreatment in Intense Magnetic Field on Digestion Performance of Diasporic Bauxite
This paper investigates the changes of phase and apparent morphology under the combined effects of an intense magnetic field and temperature field and the effect law of different roasting conditions on the dig...
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The Challenge of Effectively Utilizing Trace Elements/Impurities in a Varying Raw Materials Market
As technology and innovation advances, so do the materials which we use, and in turn, the raw material stream is continually impacted. Today, plants are faced with the challenge of ideally capitalizing on the ...
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Investigations into Innovative and Sustainable Processes for the Carbothermic Production of Gaseous Aluminum
Considerable efforts have been applied to produce aluminum by alternative ways. Two novel processes for the carbothermic reduction of alumina towards gaseous aluminum production in Electric Arc Furnace (EAF) a...
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Kinetics of Ultrasonic Degassing of Aluminum Alloys
Ultrasonic processing was shown to be an efficient means of aluminum melt degassing with benefits of being economical and environment friendly. The fundamental reason for ultrasonic degassing is known to be di...
