|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Ultrafine-grained and Heterostructured Materials (UFGH XII)
||Microstructure, texture and mechanical properties of cp-Ti processed by rotational constrained bending
||Milos Janecek, Tomáš Krajňák, Peter Minárik, Jozef Veselý, Petr Cejpek, Jeno Gubicza, Dalibor Preisler, Georgy Raab, Arseniy Raab
|On-Site Speaker (Planned)
A novel technique of severe plastic deformation referred to as rotational constrained bending (RCB) was used for the processing of commercially pure titanium. For lower strains imposed by RCB (lower number of passes) a gradient-type microstructure was formed. With increasing number of RCB passes this microstructure heterogeneity was continuously smeared out and a fully refined, homogenous microstructure with an average grain size below 300 nm was observed after 10 passes. Besides the significant microstructure refinement, a substantial increase in the dislocation density and gradual transformation of the extruded texture was observed with an increasing number of passes. In contrast to the grain refinement, which proceeded up to the 10 passes, both the proof stress and tensile strength increased only up to 4 passes. The contribution of the grain size, the dislocation density and the texture, to the room temperature proof stress is discussed in detail.
||Titanium, Nanotechnology, Mechanical Properties