|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Thermo-mechanical Response of Materials with Special Emphasis on In-situ Techniques
||High-resolution Digital Image Correlation: Advances in Quantifying the Strain Distribution at the Submicron–scale in Hexagonal Materials
||Alberto Orozco-Caballero, João Quinta da Fonseca
|On-Site Speaker (Planned)
High–resolution digital image correlation (HRDIC) provides full field deformation maps at sub-micron spatial resolutions. HRDIC requires nanoscale patterns, which can be generated by remodeling of a thin electrodeposited gold layer at elevated temperatures. This process is convenient but imposes limitations on the material studied and the testing conditions. We present two recent successes in overcoming these limitations: (i) the study of deformation in magnesium, which is susceptible to corrosion during remodelling; (ii) the study of the deformation in CP-Ti at elevated temperatures. The first experiment quantified the accommodation local deformation incompatibility, and established the relative contribution of gradients in basal slip, the activation of difficult slip systems, enhanced grain boundary shear and twinning. In Ti, we found that distinct slip bands at RT become more diffuse at 300 ºC, even though intraganular strain heterogeneity does not decrease.
||Planned: Supplemental Proceedings volume