In this work phase transformations in metastable β (Ti-15Mo) alloys were studied utilizing several in-situ diffraction techniques such as electron and neutron diffraction, small-angle neutron scattering, and synchrotron X-ray diffraction. The material was subjected to a solution treatment at a temperature above β transus and quenched into water. In this condition, the microstructure of the investigated materials consists of β matrix and ω particles. In-situ diffraction provided direct observations of microstructure evolution during linear heating and confirmed statements based on results of indirect methods. X-ray diffraction experiment allowed to determine relative evolution of the size of ω particles while phase fraction evolution was derived from neutron diffraction.

Each technique has pros and cons and valuable lessons were learnt during measurements. Usable results and difficulties observed during measurements will be presented.

*corresponding author: e-mail: pavelzhanal@gmail.com