Project Details

This junior project aims on the design and manufacturing of a new class of interstitial Ti alloys and refractory metals high entropy alloys (HEAs) exhibiting the transformation induced plasticity (TRIP) effect. To achieve the TRIP effect in Ti alloys with increased content of interstitial oxygen (i.e. increased strength) and in HEAs, the composition must be carefully tuned with respect to the stability of bcc phase. Main applicant will employ his experiences with developing new Ti alloys and the fact that metallurgy of bcc HEAs is strikingly similar to the metallurgy of bcc Ti alloys. Manufactured materials will be thoroughly characterized by a wide variety of experimental techniques including scanning and transmission electron microscopy, x-ray, electron and neutron diffraction. These results will be correlated with mechanical properties determined by tensile tests complemented by digital image correlation. The effect of composition variations on the TRIP effect will be assessed to obtain the material with the best combination of strength and ductility.