| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Ultrafine-grained and Heterostructured Materials (UFGH XI)
|
| Presentation Title |
The Influence of Severe Plastic Deformation on Phase Transformations in a Metastable Beta Titanium Alloy Ti15Mo |
| Author(s) |
Milos Janecek, Kristina Bartha, Josef Strasky, Anna Veverkova, Pere Barrioberro Vila, Jozef Vesely, Peter Minarik, Jakub Cizek, Irina Semenova, Veronika Polyakova |
| On-Site Speaker (Planned) |
Milos Janecek |
| Abstract Scope |
A Ti15Mo, which is a representative of a simple binary metastable beta Ti alloy, in a beta solution treated condition was subjected to severe plastic deformation (SPD). Equal channel angular pressing (ECAP) and high pressure torsion (HPT) were employed to introduce a high density of lattice defects to the material. The material was subsequently subjected to several types of thermal treatments in order to examine the phase transformations occurring in the deformed material upon heating.
In order to achieve a material with required mechanical properties, the effects of the grain boundaries, dislocations, induced strain, ω-phase and local chemical inhomogeneities on phase transformations were examined in-situ by electrical resistivity and synchrotron X-ray diffraction and complemented by post mortem detail investigation of the microstructure and lattice defects in characteristic conditions by scanning and transmission electron microscopy including advanced techniques of transmission Kikuchi diffraction and automated crystallographic orientation mapping and positron annihilation spectroscopy. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume; Planned: Supplemental Proceedings volume |