|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Interface-driven Phenomena in Solids: Thermodynamics, Kinetics and Chemistry
||Effect of Beta Stabilizers on Stacking Faults Energies in α-Titanium
||Riyadh Salloom, Srinivasan G. Srivilliputhur
|On-Site Speaker (Planned)
The effect of beta alloy stabilizing elements W, Mo, V, Ta, and Nb on generalized stacking faults energy for basal and prismatic slip systems in α-Ti have been studied using first principles calculations. They have a strong effect on the dislocation mobility and deformation tendency by reducing the stable (γSF) and unstable (γUSF) basal stacking fault energies of α-Ti. The twinning propensity of Ti has also been modified due to interface relaxation by stacking faults emission results from energy reduction. While Mo was least effective in lowering γSF, both Nb and Ta additions reduced both γSF and γUSF considerably and bring them to comparable values. On the contrary, all these elements decreased the prismatic stacking faults except V which increased it. We analyze these results qualitatively in the light of how these alloying additions modify electron charge density difference and the attendant bond morphologies of Ti.
||Planned: A print-only volume