Sökning: "solute drag"
Visar resultat 1 - 5 av 9 avhandlingar innehållade orden solute drag.
1. Deviation From Local Equilibrium During the Austenite to Ferrite Transformation in Steel-A Modelling Approach
Sammanfattning : This thesis highlights the role of phase interfaces on phasetransformations in metallic materials. The deviation from localequilibrium at the moving phase interface has been analysed interms of solute drag theory and finite interface mobility. Inparticular the planar growth of proeutectoid ferrite fromaustenite in steel has been studied. LÄS MER
2. Phase-field modeling of surface-energy driven processes
Sammanfattning : Surface energy plays a major role in many phenomena that are important in technological and industrial processes, for example in wetting, grain growth and sintering. In this thesis, such surface-energy driven processes are studied by means of the phase-field method. LÄS MER
3. Simulation of diffusional processes in alloys : techniques and applications
Sammanfattning : This thesis concerns computer simulation of diffusional processes in alloys. The main focus is on the development of simulation techniques for diffusion in single-phase domains, but also diffusion controlled phase-transformations and interfacial processes are discussed. LÄS MER
4. Aspects of creep-fatigue in gas turbine hot parts
Sammanfattning : The goal is reliable creep-fatigue lifing methodology for industrial gas turbines.A literature study on high temperature materials used in gas turbines reveals that:• Most testing/modelling work has focused on characterisation and modelling of material response in isothermal standard tests, i.e. creep, tensile and LCF tests. LÄS MER
5. Computational tools for simulation of phase transformations
Sammanfattning : A new software package, Thermite, for thermodynamiccalculations and process simulation is developed around theThermo-Calc databank. Thermite is a computational toolbox forequilibrium calculations and simulation of phasetransformations. It provides graphic visualisation and allowsmanipulation of the presented data. LÄS MER