|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Advances in Titanium Technology
||New Strain-transformable Titanium Alloys Displaying Combined TRIP and TWIP Effects: From Design Approaches to Deformation Mechanisms
||Régis Poulain, Stéphanie Delannoy, Ivan Guillot, Fabienne Amann, Raphaëlle Guillou, Jean-Philippe Couzinié, Lola Lilensten, Stoichko Antonov, Baptiste Gault, Frédéric De Geuser, Dominique Thiaudière, Jean-Luc Béchade, Emmanuel Clouet, Frederic Prima
|On-Site Speaker (Planned)
Among the various significant questions affecting titanium metallurgy, the effect of interstitials, more specifically oxygen, on the (mechanical) properties of titanium alloys remains one of the most critical issues. For decades, oxygen has been considered as a detrimental element, leading to drastic embrittlement. However, there is still an important lack of knowledge on underlying mechanisms regarding this effect.
This talk proposes a new insight on these facts, based on an extensive work performed on Ti-Zr-O alloys displaying high oxygen concentration (between 0.4 and 1wt%). Two different aspects of great interest are discussed: (1) the determination of the atomic scale structure of Ti-O alloys, as a function of the chemical composition, with special attention to possible local ordering or local oxygen-driven structural modification. (2) The impact of oxygen content on: (a) the macroscopical properties (resistance/ductility trade-off) and: (b) the operative deformation mechanisms, at room temperature.
||Titanium, Characterization, Mechanical Properties