|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Advances in Titanium Technology
||Tuning elastic properties of ω-phase to engineer high strength-ductility β-Titanium alloys
||Riyadh Salloom, Srinivas Aditya Mantri, Mohan Sai Kiran Nartu, Abhishek Sharma, Sriswaroop Dasari, Ravisankar Haridas, Srinivasan Srivilliputhur, Rajarshi Banerjee
|On-Site Speaker (Planned)
Recent reports suggest short term aging (~1-10 mins) of β-Titanium alloys at sub-ω solvus temperatures, severely affects their mechanical properties which may lead to an almost two-fold increase in yield-strength with a concurrent reduction in tensile ductility to ~0%. While the conventional wisdom attributes this to the brittleness of ω-phase, using experiments coupled with DFT studies in binary β-Titanium alloys we show that the elastic properties of the ω-phase can be systematically varied as a function of its composition to enhance both the ductility and strength of the Ti-alloy. Further, the efficacy of this microstructural design approach has been explored over a wide range of strain rates (10<sup>-3</sup> sec<sup>-1</sup> to 10<sup>3</sup> sec<sup>-1</sup>) in the case of a model binary alloy (Ti-20V at.%) as well as a commercial alloy (Ti-10V-2Fe-3Al wt.%). Coupling with a detailed investigation of the associated deformation-mechanisms we provide insights for a wider application of such an approach.
||Titanium, Computational Materials Science & Engineering, Characterization