|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Fatigue in Materials: Fundamentals, Multiscale Modeling and Prevention
||The Influence of Operating Slip Systems on the Dwell Sensitivity of Titanium Alloys
||Samuel Hemery, Patrick Villechaise
|On-Site Speaker (Planned)
The introduction of a dwell stage in low cycle fatigue tests at room temperature results in a reduced life of α/β titanium alloys. The sensitivity to dwell may vary depending on the alloy considered. Ageing of α/β Ti alloys may also lead to further dwell-fatigue life reduction due to Ti3Al precipitation. In the present work, metallurgical parameters such as composition and precipitation have been used to investigate the potential influence of the operating slip systems during the early deformation processes on dwell sensitivity. In order to characterize the slip activity at the local scale, in-situ SEM tensile testing coupled with EBSD investigations were applied to different polycrystalline specimens.
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