|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||In Operando Nano- and Micro-mechanical Characterization of Materials with Special Emphasis on In Situ Techniques
||Deformation Mechanisms in Micro-Scale Specimens of Polycrystalline Ti-6242
||Vikas Sinha, Sushant Jha, Robert Wheeler, Adam Pilchak, Reji John, James Larsen
|On-Site Speaker (Planned)
Fatigue crack initiation in titanium alloys is intimately related to the local stresses, deformation and crystallographic orientation at the microstructural scale. Quantification of microstructural neighborhood effects is also important for an improved understanding and modeling of deformation modes resulting in fatigue crack formation. To characterize microstructure-scale deformation behavior, micro-specimens of polycrystalline Ti-6Al-2Sn-4Zr-2Mo were prepared via novel techniques using focused ion beam. In-situ tension tests were conducted on the micro-specimens in a scanning electron microscope, while the strain was measured with digital image correlation. The results of this study have important implications for local damage accumulation during cyclic loading and the possible criteria for fatigue crack initiation in titanium alloys.
||Planned: A print-only volume