|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Phase Transformations and Microstructural Evolution
||On Dual-phase “Strain-transformable” Titanium Alloys for Enhanced Mechanical Properties: Design Principles, Microstructural Optimization and Deformation Mechanisms
||Lola Lilensten, Yolaine Danard, Jean-Marc Joubert, Fan Sun, Cédrik Brozek, Loïc Perrière, Philippe Vermaut, Frédéric Prima
|On-Site Speaker (Planned)
Owing to their high specific properties, titanium alloys have been, for a long time, competitive materials in fields such as aerospace industry. Among these alloys, research efforts were recently dedicated to design approaches for improved strength/ductility trade off. Guided by electronic parameters calculations, new “strain-transformable” single phase Ti alloys have been developed, Thanks to the synergy between stress induced martensitic transformation, intense twinning and dislocation glide, these new materials display a combination of large work-hardening and high ductility but a still a moderate yield strength level. To overcome this problem, a dual-phase approach is presently investigated. Extending the electronic parameters strategy to multi-phases microstructures resulted in + alloys still undergoing both twinning induced plasticity (TWIP) and transformation induced plasticity (TRIP) effects. In this talk, design approaches and investigation of TWIP and TRIP effects in these new dual phase titanium alloys will be exemplified in the Ti-Cr-Sn system.
||Planned: Supplemental Proceedings volume