|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Advanced Characterization Techniques for Quantifying and Modeling Deformation
||Slip Localisation in Ti Alloys Studied by High-resolution Digital Image Correlation
||Michael Preuss, David Lunt, Joao Quinta da Fonseca
|On-Site Speaker (Planned)
Titanium alloys, as well as other hcp metals, are well known for their plastic anisotropy related to slip modes having different CRSS values. Importantly, typical two-phase Ti alloys can be processed to display a range of different microstructures, textures but also might exhibit microstructure inhomogeneities. Both aspect play an important role in understanding the performance of Ti alloys and require detailed understanding of the microstructure-deformation mechanism relationship. In order to provide new insight into microstructure dependent plasticity, detailed high-resolution digital image correlation has been carried out in conjunction with EBSD and TEM analysis to identify slip modes and quantify shear strain associated with slip traces. Such analysis has enabled comparing strain localisation in macrozones with more homogeneous microstructures as well as quantifying the effect of alpha-2 formation. The observations will be discussed in respect of consequences for fatigue behaviour.
||Planned: EPD Congress Volume