|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||In Operando Nano- and Micro-mechanical Characterization of Materials with Special Emphasis on In Situ Techniques
||Onset of Slip Activity in Ti6Al4V Single Colonies: Role of Alpha/Beta Interfaces
||Samuel Hemery, Loïc Signor, Patrick Villechaise
|On-Site Speaker (Planned)
The low cycle fatigue life of titanium alloys highly depends upon the crack initiation stage which is generally controlled by slip activity in the alpha phase. Therefore, a deep understanding of the formation of the early slip bands appears as a key requirement. In order to characterize the onset of slip activity at the local scale, in-SEM tensile testing was applied to single colony specimens. A special care was paid on crystallographic aspects. Local crystallographic orientation of both alpha and beta phases was considered from EBSD analysis in order to identify activated slip systems. In addition, interaction stresses in the vicinity of alpha/beta interfaces arising from the elastic anisotropy of both phases were evaluated using finite elements modeling. The slip activity of titanium single colonies will be discussed in light of these experimental and numerical results.
||Planned: A print-only volume