Phase Field Modeling Of Multi Domain Evolution In Ferromagnetic Shape Memory Alloys And Of Polycrystalline Thin Film Growth

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Phase-field Modeling of Multi-domain Evolution in Ferromagnetic Shape Memory Alloys and of Polycrystalline Thin Film Growth

Christian Mennerich
Phase field Modeling of Multi domain Evolution in Ferromagnetic Shape Memory Alloys and of Polycrystalline Thin Film Growth Book PDF

Author : Christian Mennerich
Publisher : KIT Scientific Publishing
Page : 284 pages
File Size : 54,7 Mb
Release : 2014-05-13
Category : Science
ISBN : 9783731500094

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Phase-field Modeling of Multi-domain Evolution in Ferromagnetic Shape Memory Alloys and of Polycrystalline Thin Film Growth by Christian Mennerich Pdf

The phase-field method is a powerful tool in computer-aided materials science as it allows for the analysis of the time-spatial evolution of microstructures on the mesoscale. A multi-phase-field model is adopted to run numerical simulations in two different areas of scientific interest: Polycrystalline thin films growth and the ferromagnetic shape memory effect. FFT-techniques, norm conservative integration and RVE-methods are necessary to make the coupled problems numerically feasible.

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

Zhang, Tao
Phase field Modeling of Phase Changes and Mechanical Stresses in Electrode Particles of Secondary Batteries Book PDF

Author : Zhang, Tao
Publisher : KIT Scientific Publishing
Page : 224 pages
File Size : 49,9 Mb
Release : 2021-09-27
Category : Technology & Engineering
ISBN : 9783731510024

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

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.

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

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

Author : Syha, Melanie
Publisher : KIT Scientific Publishing
Page : 178 pages
File Size : 50,5 Mb
Release : 2014-09-25
Category : Science
ISBN : 9783731502425

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

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 .

Structure evolution in tribological interfaces studied by multilayer model alloys

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

Author : Cihan, Ebru
Publisher : KIT Scientific Publishing
Page : 194 pages
File Size : 47,9 Mb
Release : 2020-10-21
Category : Technology & Engineering
ISBN : 9783731509998

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Structure evolution in tribological interfaces studied by multilayer model alloys by Cihan, Ebru Pdf

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.

On the structure-property correlation and the evolution of Nanofeatures in 12-13.5% Cr oxide dispersion strengthened ferritic steels

He, Pei
On the structure property correlation and the evolution of Nanofeatures in 12 13 5 Cr oxide dispersion strengthened ferritic steels Book PDF

Author : He, Pei
Publisher : KIT Scientific Publishing
Page : 236 pages
File Size : 53,8 Mb
Release : 2013-12-24
Category : Technology & Engineering
ISBN : 9783731501411

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On the structure-property correlation and the evolution of Nanofeatures in 12-13.5% Cr oxide dispersion strengthened ferritic steels by He, Pei Pdf

Main objective of this work is to develop, by systematic variation of the chemical composition, and TMP, 14% Cr nano-structured ferritic alloys with significantly improved high-temperature properties compared to currently available ODS alloys. Application of state-of-the-art characterization tools shall lead to an integrated understanding of structure-property correlation and the formation mechanism of nanoparticles.

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

Vondrous, Alexander
Grain growth behavior and efficient large scale simulations of recrystallization with the phase field method Book PDF

Author : Vondrous, Alexander
Publisher : KIT Scientific Publishing
Page : 162 pages
File Size : 48,5 Mb
Release : 2014-12-15
Category : Technology (General)
ISBN : 9783731502807

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

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.

High Cycle Fatigue of Al and Cu Thin Films by a Novel High-Throughput Method

Sofie Burger
High Cycle Fatigue of Al and Cu Thin Films by a Novel High Throughput Method Book PDF

Author : Sofie Burger
Publisher : KIT Scientific Publishing
Page : 172 pages
File Size : 51,5 Mb
Release : 2014-05-19
Category : Technology & Engineering
ISBN : 9783731500254

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High Cycle Fatigue of Al and Cu Thin Films by a Novel High-Throughput Method by Sofie Burger Pdf

In the last two decades, the reliability of small electronic devices used in automotive or consumer electronics gained researchers attention. Thus, there is the need to understand the fatigue properties and damage mechanisms of thin films. In this thesis a novel high-throughput testing method for thin films on Si substrate is presented. The specialty of this method is to test one sample at different strain amplitudes at the same time and measure an entire lifetime curve with only one experiment.

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

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

Author : Birkholz, Oleg
Publisher : KIT Scientific Publishing
Page : 246 pages
File Size : 40,8 Mb
Release : 2022-10-05
Category : Science
ISBN : 9783731511724

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

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.

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

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

Author : Mazzocchi, Francesco
Publisher : KIT Scientific Publishing
Page : 212 pages
File Size : 41,8 Mb
Release : 2022-07-01
Category : Technology & Engineering
ISBN : 9783731511816

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

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.

Fluid Flow and Heat Transfer in Cellular Solids

Ettrich, Joerg
Fluid Flow and Heat Transfer in Cellular Solids Book PDF

Author : Ettrich, Joerg
Publisher : KIT Scientific Publishing
Page : 278 pages
File Size : 40,9 Mb
Release : 2014-09-26
Category : Science
ISBN : 9783731502418

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Fluid Flow and Heat Transfer in Cellular Solids by Ettrich, Joerg Pdf

To determine the characteristics and properties of cellular solids for an application, and to allow a systematic practical use by means of correlations and modelling approaches, we perform experimental investigations and develop numerical methods. In view of coupled multi-physics simulations, we employ the phase-field method. Finally, the applicability is demonstrated exemplarily for open-cell metal foams, providing qualitative and quantitative comparison with experimental data.