|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Computational Design and Simulation of Materials (CDSM 2018): Computational Design of Materials
||Design of a New Multi-element Beta Titanium Alloy Based on D-electron Method
||Saeed Sadeghpour, Seyed Mahdi Abbasi, Maryam Morakabati
|On-Site Speaker (Planned)
A new beta titanium alloy in the Ti-Al-Mo-Cr-V system has been designed using the d-electron method with the aim of activating a combination of different deformation mechanisms. In this regard Ti-3Al-5Mo-7V-3Cr (Ti-3573) alloy has been designed and compared with a commercial Ti-5Al-5Mo-5V-3Cr (Ti-5553) alloy. To evaluate the accuracy of the d-electron theoretical predictions, uniaxial compression tests were performed at room temperature. The deformation mechanism of Ti-3573 was found to be a combination of slip, stress-induced martensitic transformation and mechanical twinning. As a result of the combined deformation mechanisms, the designed alloy showed enhanced compressive strength and ductility in comparison to the Ti-5553 alloy. The results showed that in the case of twinning the prediction by the d-electron method is consistent with experimental observations but regarding the stress-induced martensitic transformation this method should be used with modifications to the d-electron phase stability map.
||Planned: Supplemental Proceedings volume