Abstrakt
Phase transformations in TIMETAL LCB and their influence on mechanical properties were studied in this research. The ageing response of this material was studied by low temperature ageing at 400, 450 and 500 degrees C.
The evolution of volume fractions of alpha, beta and omega phases during ageing was studied by X-ray diffraction (XRD). Mechanical properties were investigated using microhardness measurements and tensile tests.
It has been proved that metastable omega phase is formed during annealing at 400 and 450 degrees C. omega particles further transform to very fine precipitates of a phase when exposed to annealing for longer time periods. These fine precipitates significantly contribute to increase of microhardness and achieving high value of yield stress.