|About this Abstract
||2023 TMS Annual Meeting & Exhibition
||Advances in Titanium Technology
||High Strain Rate Deformation in Metastable β-Titanium Alloys: A Case Study of Ti-1023
||Abhishek Sharma, Mohan Sai Kiran Nartu, Ravisankar Haridas, Sriswaroop Dasari, Srinivas Aditya Mantri, Jeffrey T Lloyd, Rajarshi Banerjee
|On-Site Speaker (Planned)
While metastable β-Titanium alloys are commercially used for many structural applications, their suitability for ballistic applications has not been well explored. This presentation investigates the ballistic properties of metastable β-Titanium alloys, specifically focusing on the high-strain rate performance of Ti-10V-2Fe-3Al (wt.%), commonly known as Ti-1023. Employing combinations of cold-rolling and sub-β-solvus heat treatments, the distribution of α, αʹʹ and ω-phases within a β matrix has been tailored, and their influence on the strength and strain-hardenability during high-strain rate compression testing has been investigated. Varying the degree of cold rolling permits the exploitation of a wide window of macroscopic mechanical properties in these alloys. Detailed post-deformation microstructural analysis revealed the microscopic mechanisms at such high strain rates. A combination of transformation induced plasticity (TRIP) and internal twinning within the resultant martensite laths along with lath-lath interactions appear to provide a good balance of strength and strain hardenability in these alloys.
||Titanium, Mechanical Properties, Shaping and Forming