|ŠMILAUEROVÁ Jana||MFF UK|
|Spoluautoři JANEČEK Miloš|
In this research, ageing response of a metastable beta titanium alloy, TIMETAL LCB, was studied. The material was first aged in high temperature (alpha+beta) regime in which primary alpha phase with defined thickness and contiguity precipitated along beta/beta grain boundaries. Then, low temperature ageing in the range of 400 - 500°C was used to introduce various microstructures and phase compositions of beta, alpha and metastable omega phase. The phase composition, lattice parameters of individual phases and the size of precipitates was determined by X-ray diffraction. The influence of the resulting phase composition on mechanical properties of the material was determined using microhardness measurements and tensile testing. Moreover, the ageing kinetics of TIMETAL LCB was studied by in-situ methods such as differential scanning calorimetry (DSC) and resistivity measurements.