Microstructure evolution in strontium titanate Investigated by means of grain growth simulations and x-ray diffraction contrast tomography experiments

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Publisher : KIT Scientific Publishing
ISBN 13 : 3731502429
Total Pages : 178 pages
Book Rating : 4.7/5 (315 download)

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Book Synopsis Microstructure evolution in strontium titanate Investigated by means of grain growth simulations and x-ray diffraction contrast tomography experiments by : Syha, Melanie

Download or read book Microstructure evolution in strontium titanate Investigated by means of grain growth simulations and x-ray diffraction contrast tomography experiments written by Syha, Melanie and published by KIT Scientific Publishing. This book was released on 2014-09-25 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding the physical processes during fabrication and annealing of ceramic materials is a long sought goal among material scientists. Using strontium titanate as a model system for perovskite ceramics, the present work combines advanced non-destructive 3D characterization techniques and computational modeling of microstructure evolution in order to link grain morphology, interface anisotropy and microstructure evolution to macroscopic physical properties .

Microstructure Evolution in Strontium Titanate Investigated by Means of Grain Growth Simulations and X-ray Diffraction Contrast Tomography Experiments

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Publisher :
ISBN 13 : 9781013280252
Total Pages : 168 pages
Book Rating : 4.2/5 (82 download)

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Book Synopsis Microstructure Evolution in Strontium Titanate Investigated by Means of Grain Growth Simulations and X-ray Diffraction Contrast Tomography Experiments by : Melanie Syha

Download or read book Microstructure Evolution in Strontium Titanate Investigated by Means of Grain Growth Simulations and X-ray Diffraction Contrast Tomography Experiments written by Melanie Syha and published by . This book was released on 2020-10-09 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding the physical processes during fabrication and annealing of ceramic materials is a long sought goal among material scientists. Using strontium titanate as a model system for perovskite ceramics, the present work combines advanced non-destructive 3D characterization techniques and computational modeling of microstructure evolution in order to link grain morphology, interface anisotropy and microstructure evolution to macroscopic physical properties . This work was published by Saint Philip Street Press pursuant to a Creative Commons license permitting commercial use. All rights not granted by the work's license are retained by the author or authors.

Grain growth behavior and efficient large scale simulations of recrystallization with the phase-field method

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Publisher : KIT Scientific Publishing
ISBN 13 : 3731502801
Total Pages : 162 pages
Book Rating : 4.7/5 (315 download)

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Book Synopsis Grain growth behavior and efficient large scale simulations of recrystallization with the phase-field method by : Vondrous, Alexander

Download or read book Grain growth behavior and efficient large scale simulations of recrystallization with the phase-field method written by Vondrous, Alexander and published by KIT Scientific Publishing. This book was released on 2014-12-15 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book summarizes the found insights of grain growth behavior, of multidimensional decomposition for regular grids to efficiently parallelize computing and how to simulate recrystallization by coupling the finite element method with the phase-field method for microstructure texture analysis. The frame of the book is created by the phase-field method, which is the tool used in this work, to investigate microstructure phenomena.

Experimental Investigation of Crack Initiation in Face-Centered Cubic Materials in the High and Very High Cycle Fatigue Regime

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Publisher : KIT Scientific Publishing
ISBN 13 : 3731504715
Total Pages : 234 pages
Book Rating : 4.7/5 (315 download)

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Book Synopsis Experimental Investigation of Crack Initiation in Face-Centered Cubic Materials in the High and Very High Cycle Fatigue Regime by : Straub, Thomas

Download or read book Experimental Investigation of Crack Initiation in Face-Centered Cubic Materials in the High and Very High Cycle Fatigue Regime written by Straub, Thomas and published by KIT Scientific Publishing. This book was released on 2016 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book investigates the fatigue mechanisms and crack initiation of Ni, Al and Cu on a small-scale in the Very High Cycle Fatigue regime by means of innovative fatigue experimentation. A novel custom-built resonant fatigue setup showed that the sample resonant frequency changes with increasing cycle number due to fatigue damage. Mechanisms such as slip band formation have been observed. Cyclic hardening, vacancy and oxidation formation may be considered as early fatigue mechanisms.

Phase-field modeling of microstructural pattern formation in alloys and geological veins

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Publisher : KIT Scientific Publishing
ISBN 13 : 373150491X
Total Pages : 240 pages
Book Rating : 4.7/5 (315 download)

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Book Synopsis Phase-field modeling of microstructural pattern formation in alloys and geological veins by : Ankit, Kumar

Download or read book Phase-field modeling of microstructural pattern formation in alloys and geological veins written by Ankit, Kumar and published by KIT Scientific Publishing. This book was released on 2016-05-31 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the advent of high performance computing, the application areas of the phase-field method, traditionally used to numerically model the phase transformation in metals and alloys, have now spanned into geoscience. A systematic investigation of the two distinct scientific problems in consideration suggest a strong influence of interfacial energy on the natural and induced pattern formation in diffusion-controlled regime.

Structure evolution in tribological interfaces studied by multilayer model alloys

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Publisher : KIT Scientific Publishing
ISBN 13 : 3731509997
Total Pages : 194 pages
Book Rating : 4.7/5 (315 download)

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Book Synopsis Structure evolution in tribological interfaces studied by multilayer model alloys by : Cihan, Ebru

Download or read book Structure evolution in tribological interfaces studied by multilayer model alloys written by Cihan, Ebru and published by KIT Scientific Publishing. This book was released on 2020-10-21 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent studies of deformation mechanisms of metals and alloys pioneer the better investigation of the friction and wear behavior of materials with well-defined initial microstructures. Within this scope, in this work, the effect of sub-surface deformations on the resulting friction and wear behavior has been searched by means of a systematic experimental study on Au-Ni metallic multilayer model alloy system.

Investigations on Joule heating applications by multiphysical continuum simulations in nanoscale systems

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Publisher : KIT Scientific Publishing
ISBN 13 : 3731502615
Total Pages : 258 pages
Book Rating : 4.7/5 (315 download)

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Book Synopsis Investigations on Joule heating applications by multiphysical continuum simulations in nanoscale systems by : Feuchter, Manuel Klaus Ludwig

Download or read book Investigations on Joule heating applications by multiphysical continuum simulations in nanoscale systems written by Feuchter, Manuel Klaus Ludwig and published by KIT Scientific Publishing. This book was released on 2014-10-01 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work furthers the overall understanding of a 3w-measurement, by considering previously unexamined macroscopic influence factors within measurement by Finite Element simulations (FES). Moreover, new measuring configurations are developed to determine (an)isotropic thermal conductivities of nanoscale samples. Since no analytic solutions are available for these configurations, a new evaluation methodology is presented to determine emergent thermal conductivities by FES and Neural Networks.

Phase-field simulations of multi-component solidification and coarsening based on thermodynamic datasets

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Publisher : KIT Scientific Publishing
ISBN 13 : 3731506181
Total Pages : 246 pages
Book Rating : 4.7/5 (315 download)

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Book Synopsis Phase-field simulations of multi-component solidification and coarsening based on thermodynamic datasets by : Schulz, Sebastian

Download or read book Phase-field simulations of multi-component solidification and coarsening based on thermodynamic datasets written by Schulz, Sebastian and published by KIT Scientific Publishing. This book was released on 2017-02-22 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: The utilization of thermodynamic and mobility data plays a major role in phase-field modeling. This work discusses different formulations for the thermodynamic quantities of a grand potential model along with practices to determine parameters from datasets. The framework is used to study solidification of Al-Si-Mg for a variation of composition, diffusivities and surface energy anisotropies. To verify the simulations, they are compared with solidification theories.

Phase-field Modeling of Phase Changes and Mechanical Stresses in Electrode Particles of Secondary Batteries

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Publisher : KIT Scientific Publishing
ISBN 13 : 3731510022
Total Pages : 224 pages
Book Rating : 4.7/5 (315 download)

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Book Synopsis Phase-field Modeling of Phase Changes and Mechanical Stresses in Electrode Particles of Secondary Batteries by : Zhang, Tao

Download or read book Phase-field Modeling of Phase Changes and Mechanical Stresses in Electrode Particles of Secondary Batteries written by Zhang, Tao and published by KIT Scientific Publishing. This book was released on 2021-09-27 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most storage materials exhibit phase changes, which cause stresses and, thus, lead to damage of the electrode particles. In this work, a phase-field model for the cathode material NaxFePO4 of Na-ion batteries is studied to understand phase changes and stress evolution. Furthermore, we study the particle size and SOC dependent miscibility gap of the nanoscale insertion materials. Finally, we introduce the nonlocal species concentration theory, and show how the nonlocality influences the results.

Modeling transport properties and electrochemical performance of hierarchically structured lithium-ion battery cathodes using resistor networks and mathematical half-cell models

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Publisher : KIT Scientific Publishing
ISBN 13 : 373151172X
Total Pages : 246 pages
Book Rating : 4.7/5 (315 download)

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Book Synopsis Modeling transport properties and electrochemical performance of hierarchically structured lithium-ion battery cathodes using resistor networks and mathematical half-cell models by : Birkholz, Oleg

Download or read book Modeling transport properties and electrochemical performance of hierarchically structured lithium-ion battery cathodes using resistor networks and mathematical half-cell models written by Birkholz, Oleg and published by KIT Scientific Publishing. This book was released on 2022-10-05 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hierarchically structured active materials in electrodes of lithium-ion cells are promising candidates for increasing gravimetric energy density and improving rate capability of the system. To investigate the influence of cathode structures on the performance of the whole cell, efficient tools for calculating effective transport properties of granular systems are developed and their influence on the electrochemical performance is investigated in specially adapted cell models.

Characterization and Modeling of the Ratcheting Behavior of the Ferritic-Martensitic Steel P91

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Publisher : KIT Scientific Publishing
ISBN 13 : 3731505037
Total Pages : 224 pages
Book Rating : 4.7/5 (315 download)

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Book Synopsis Characterization and Modeling of the Ratcheting Behavior of the Ferritic-Martensitic Steel P91 by : Zhang, Kuo

Download or read book Characterization and Modeling of the Ratcheting Behavior of the Ferritic-Martensitic Steel P91 written by Zhang, Kuo and published by KIT Scientific Publishing. This book was released on 2017-07-12 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this work, the ratcheting-behavior of 9%Cr-1%Mo ferritic-martensitic steel is studied with uniaxial cyclic loading. To describe the ratcheting-behavior of this steel, a visco-plastic constitutive model with consideration of cyclic softening of Reduced Activation Ferritic Martensitic steels is further modified, based on the analysis of back stress.

Microplasticity of idealized single crystalline Ag cantilevers characterized with methods of high resolution

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Publisher : KIT Scientific Publishing
ISBN 13 : 3731506823
Total Pages : 252 pages
Book Rating : 4.7/5 (315 download)

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Book Synopsis Microplasticity of idealized single crystalline Ag cantilevers characterized with methods of high resolution by : Wobrock, Mark

Download or read book Microplasticity of idealized single crystalline Ag cantilevers characterized with methods of high resolution written by Wobrock, Mark and published by KIT Scientific Publishing. This book was released on 2017-11-22 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: Single crystalline, μm-sized cantilevers are fabricated out of epitaxially grown Ag thin films by a lithography-based procedure and are deflected by a nanoindenter system. The microstructure of the plastically deformed cantile-vers is investigated using transmission Kikuchi diffraction (TKD) on the cantilever cross section. 3D discrete dislocation dynamics simulations (DDD) are performed for further analysis. A mechanism to explain the formation of dislocation networks upon loading is suggested.

Development of NbN based Kinetic Inductance Detectors on sapphire and diamond substrates for fusion plasma polarimetric diagnostics

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Publisher : KIT Scientific Publishing
ISBN 13 : 3731511819
Total Pages : 212 pages
Book Rating : 4.7/5 (315 download)

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Book Synopsis Development of NbN based Kinetic Inductance Detectors on sapphire and diamond substrates for fusion plasma polarimetric diagnostics by : Mazzocchi, Francesco

Download or read book Development of NbN based Kinetic Inductance Detectors on sapphire and diamond substrates for fusion plasma polarimetric diagnostics written by Mazzocchi, Francesco and published by KIT Scientific Publishing. This book was released on 2022-07-01 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work aimed at designing, studying and producing the first prototypes of KIDs tailored for fusion plasma polarimetric diagnostics. Diamond was considered for the first time as substrate material for low-temperature superconducting detectors given its unmatched optical, radiation hardness and thermal qualities, properties necessary for working environments potentially saturated with radiation. This work represents a first step toward the optimization and final application of this technology.

Dynamic Model-based Analysis of Oxygen Reduction Reaction in Gas Diffusion Electrodes

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Publisher : KIT Scientific Publishing
ISBN 13 : 3731512343
Total Pages : 178 pages
Book Rating : 4.7/5 (315 download)

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Book Synopsis Dynamic Model-based Analysis of Oxygen Reduction Reaction in Gas Diffusion Electrodes by : Röhe, Maximilian

Download or read book Dynamic Model-based Analysis of Oxygen Reduction Reaction in Gas Diffusion Electrodes written by Röhe, Maximilian and published by KIT Scientific Publishing. This book was released on 2024-01-09 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this work, the first simulation model of oxygen depolarized cathodes (ODC), which are silver catalyst-based gas diffusion electrodes, is presented that considers the phase equilibrium of the gas-liquid interface and structure-related inhomogeneities in electrolyte distribution. By means of the model it has been identified that mass transport of water and ions in the liquid phase is a crucial factor for electrode performance and how it is influenced by the electrode structure.

Fatigue of Micro Molded Materials - Aluminum Bronze and Yttria Stabilized Zirconia

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Publisher : KIT Scientific Publishing
ISBN 13 : 3731502933
Total Pages : 284 pages
Book Rating : 4.7/5 (315 download)

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Book Synopsis Fatigue of Micro Molded Materials - Aluminum Bronze and Yttria Stabilized Zirconia by : Kennerknecht, Tobias

Download or read book Fatigue of Micro Molded Materials - Aluminum Bronze and Yttria Stabilized Zirconia written by Kennerknecht, Tobias and published by KIT Scientific Publishing. This book was released on 2014-12-04 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: Custom built setups were developed to investigate micro samples during quasistatic and cyclic testing in tension, compression and bending. Micro molded CuAl10Ni5Fe4-samples showed similar fatigue behavior compared to macroscopic samples due to both the sample size and microstructure being scaled down with the manufacturing process. Results from cyclic three-point bending tests on micro molded 3Y-TZP suggested that a minimum crack extension is necessary to develop cyclically degradable shielding.

A novel micro-mechanical model for prediction of multiaxial high cycle fatigue at small scales

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Publisher : KIT Scientific Publishing
ISBN 13 : 3731505835
Total Pages : 142 pages
Book Rating : 4.7/5 (315 download)

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Book Synopsis A novel micro-mechanical model for prediction of multiaxial high cycle fatigue at small scales by : Eslami, Reza

Download or read book A novel micro-mechanical model for prediction of multiaxial high cycle fatigue at small scales written by Eslami, Reza and published by KIT Scientific Publishing. This book was released on 2017-05-03 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: The grain microstructure and damage mechanisms at the grain level are the key factors that influence fatigue of metals at small scales. This is addressed in this work by establishing a new micro-mechanical model for prediction of multiaxial high cycle fatigue (HCF) at a length scale of 5-100?m. The HCF model considers elasto-plastic behavior of metals at the grain level and microstructural parameters, specifically the grain size and the grain orientation.

Influence of strain on the functionality of ink-jet printed thin films and devices on flexible substrates

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Publisher : KIT Scientific Publishing
ISBN 13 : 3731508532
Total Pages : 158 pages
Book Rating : 4.7/5 (315 download)

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Book Synopsis Influence of strain on the functionality of ink-jet printed thin films and devices on flexible substrates by : Mishra, Nilesha

Download or read book Influence of strain on the functionality of ink-jet printed thin films and devices on flexible substrates written by Mishra, Nilesha and published by KIT Scientific Publishing. This book was released on 2019-02-15 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: