Metastable Beta Titanium Alloys: Tuning the Beta Phase Stability and Low-Temperature Martensitic Transformation of Metastable Beta Titanium Alloys

This research focuses on the stability of three metastable ? titanium alloys – Ti-10V-1Fe-3Al (Ti-1013), Ti-10V-2Cr-3Al (Ti-102Cr3) and Ti-10V-2Fe-3Al-B (Ti-1023B). In the first stage of the work, new ?+(?+?) heat treatment schemes were designed on the basis of Thermo-Calc® simulations and previous research work and carried out to such an extent...

Exploring the opportunities of piezoelectric composites for shear strain-driven energy harvesting

This thesis investigates the shear strain-driven energy harvesting performance of compliant piezoelectric composite material systems. A characterization study was performed to observe and quantify the piezoelectric shear coupling of two phase piezoelectric composite materials ranging from 0-3 (particulate) to 1-3 (fiber) composites. To this aim,...

Structure property relationships for NTC ceramics (I) and polymer composites (II)

Ab Initio-Thermodynamic Modelling of Precipitation Processes in the Aluminium 7XXX Family

This thesis studies precipitation processes in the Aluminium 7000 series using quantum mechanical total energy calculations. The emphasis is laid on studying the energetics of the various transient phases involved in precipitation of the 5 most important strengthening precipitates. Bulk, strain and interface effects are studies separately, in...

Optimization of laser beam welding of PM1000 oxide dispersion strengthened super alloy for high temperature applications

The research of this thesis is focused on the optimization of laser beam welding of PMlOOO with respect to its high temperature mechanica! properties. This nickel chromium alloy is used for the thermal protection system of the re-entry test vehicle of ESA; Expert. With respect to the ceramic tiles which are used in conventional thermal...

Dilatometric investigation on the phase transformations during thermal treatment of a low silicon TRIP-aided multiphase steel

The Effects of Nitriding on Fatigue Limit of a Fe-Cr-C Steel ( En40B )

Neutron depolarisation experiments on medium carbon steels

An experimental study on the effect of niobium on the transformation behaviour of a Nb microalloyed High Strength Low Alloy steel

An experimental study on the austenite to ferrite phase transformation in Fe-Co and Fe-Cu alloys

De invloed van microstructurele parameters op de vermoeiingssterkte van genitreerd 42CrMo4

Modelling of the hardenability of engineering steels using artificial neural networks

Een diffusiemodel voor de austeniet-ferriet transformatie in zuivere Fe-C legeringen onder de Al temperatuur

Strength Optimisation of Au-Pt-base alloys

Thermomechanical processing of some dual phase steels