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Showing 1 to 20 of 28 for “"Binary alloy"”.
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Modelling of the binary alloy solidification process
… consistent model capable of modelling a binary alloy undergoing solidification or melting is developed. The theory is continuum based, and the solid-liquid phase change system is described macroscopically by a single set of conservation equations. The model is an extension of that …
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The Premartensitic Transitions of Titanium Nickel: Observation of a Charge Density Wave in a Binary Alloy
… transitions has been identified in TiNi(Fe), a binary alloy. Bulk thermal and transport measurements have revealed that the "pre-martensitic instability" is composed of two distinct phase transitions. In TiNi(3.2% Fe), these occur at 232 K and 224 K. The Fe impurities are added to produce a …
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The Premartensitic Transitions of Titanium Nickel: Observation of a Charge Density Wave in a Binary Alloy
Submitted by Jesse Garrison (jagarris@illinois.edu) on 2011-06-08T18:25:00Z No. of bitstreams: 1 1981_meichle.pdf: 5427373 bytes, checksum: e5297eaac99a6c38e92d60ee6827498e (MD5)
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Asymptotic behavior in spinodal decomposition
… decomposition in a large 3-space isotropic ideal binary alloy system and a well matched binary fluid system. Use of a CDS allows us to greatly increase the size of system we may study and allows us to reach late stages of development. At late times, the coarsening spinodal decomposition pattern …
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Phase-Fields and the Renormalization Group: A Continuum Approach to Multiscale Modeling of Materials
… and the directional solidification of a dilute binary alloy, using phase-field models.
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An Adaptive Mesh Refinement Scheme for Solidification Problems
… the temperature and concentration fields for binary alloy solidification. Formulations and solution schemes for these problems have been described.
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Advancing structural applications of nickel electrodeposition onto additively manufactured polymers
… novel methods of electrodeposition of nitinol binary alloy with promising composition results revealing near equal deposition by weight.
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A multiscale study on the origins of the Portevin-Le Chatelier effect in polycrystalline nickel-based superalloys
Various engineering alloys display load drops and strain localisation during constant strain rate tensile testing, termed the Portevin-Le Chatelier (PLC) effect. This includes nickel-based superalloys, between approximately 200 °C and 600 °C. The PLC effect is widely attributed to Dynamic Strain …
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Nanostructuring of Cu-TiB2 induced by ion irradiation
… modeling and experimental results of Cu-base alloys indicate that these dynamical processes can lead to nanostructuring in binary alloy system. Nanostructuring at steady state under irradiation could result in materials with very high irradiation resistance as interfaces can trap point defects …
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On the electrolytic nature of molten aluminum and rare earth oxides
… yttria were electrolytically decomposed to metal alloy and oxygen gas using iridium electrodes. The method was validated in molten alumina. Systematic investigation of the half-cell reactions corresponding to oxygen evolution and aluminum deposition revealed their electrochemical nature. …
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A machine learning approach to crystal structure prediction
… predicting crystal structure and applies it to binary metallic alloys. As computational materials science turns a promising eye towards design, routine encounters with chemistries and compositions lacking experimental information will demand a practical solution to structure prediction. We …
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Nanoporosity Formation in Ag-Au Alloys
Selective dissolution also known as dealloying is a corrosion process in which one component of a binary alloy system is selectively removed through an electrochemically controlled process which leads to the formation of a porous metal "sponge" with a porosity that is completely interconnected and …
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Materials properties of hafnium and zirconium silicates: Metal interdiffusion and dopant penetration studies.
… the addition of nitrogen into this pseudo-binary alloy has been shown to improve their thermal stability, electrical properties, and reduce dopant penetration. Because CMOS processing requires high temperature anneals (up to 1050 °C), it is important to understand the diffusion properties …
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Microstructure design of mechanically alloyed materials
… densification of powders or foils. Several alloy design strategies have been developed to overcome these thermal stability issues, but their efficacy depends on the spatial distribution of the stabilizing element in the feedstock materials, which are typically prepared using extensive …
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Studies of Structural and Chemical Ordering in Metallic Liquids and Glasses Using Electrostatic Levitation
… provide insight into why some metallic alloy liquids form glasses more easily than others. Such structure and property measurements of high temperature, highly reactive metallic liquids in both their equilibrium and metastable, supercooled states are made possible through the use of the …
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Analytic Results for Hopping Models with Excluded Volume Constraint
… vacancy in a model for an extreme anisotropic binary alloy. In the last chapter we present a Monte-Carlo study and a mean-field analysis for interface erosion caused by mobile vacancies. Part II: One-Dimensional Periodic Hopping Models with Broken Translational Invariance.Case of a Mobile …
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Modeling transport phenomena and uncertainty quantification in solidification processes
… primary processing route for wrought aluminum alloys. This semicontinuous process consists of primary cooling as the metal is pulled through a water cooled mold followed by secondary cooling with a water jet spray and free falling water. To gain insight into this complex solidification process, …
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Grain Boundary Solute Segregation in Vanadium
Vanadium alloys are a candidate structural material in nuclear fusion applications, where the presence of grain boundaries can improve mechanical properties and act as a sink for radiation- induced defects. Solutes with a thermodynamic preference to segregate to grain boundaries can stabilize them, …
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Magnetism and interactions within the single domain limit: reversal, logic and information storage
… Further, more complicated design, two digital binary full adder, was carried out. This novel design provides high stability for logic operation of MQCA and potentially paves way for its application. In addition, the magnetization reversal in perpendicular magnetic anisotropy (PMA) system and …
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The generation and application of metallurgical thermodynamic data
… the automatic calculation of phase diagrams for binary systems. Measurements of the enthalpies of formation of alloys in the Fe-Ti system are reported. All data for this system have been critically assessed to provide a dataset consistent with the published phase diagram. Critically assessed data …
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