|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Mechanical Behavior and Degradation of Advanced Nuclear Fuel and Structural Materials
||NOW ON-DEMAND ONLY - Assessment of Local Deformation Behavior in Mesoscale Tensile Specimens via Digital-image Correlation
||Yachun Wang, David Frazer , Daniel Murray, Geoffrey L Beausoleil, Mahmut Nedim Cinbiz
|On-Site Speaker (Planned)
Advanced nuclear reactor development and demonstration goals challenge the qualification of in-core fuel cladding and structural materials due to material availability and dose limitations of nuclear facilities. Therefore, focused-ion beam (FIB) milled subsize specimens may offer a pathway to assess the advanced nuclear reactor materials’ mechanical performance. One challenge with mesoscale tests is to map local strain distribution on the sample. Surface metrology on using scanning electron microscopy (SEM) while testing and subsequent strain calculations via digital image correlation (DIC) offer an accurate local strain examination on the FIB-milled samples. In this study, computer-generated speckle patterns were applied on the FIB-milled surrogate aluminum and Zircaloy-4 samples using focused electron beam (FEB) deposition process resulting high-contrast nano-scale speckle patterns. In-situ SEM tensile testing, and DIC analysis were performed to investigate local deformation and its effect on the failure behavior. The effect of the randomness of the speckle patterns were also investigated.
||Mechanical Properties, Nuclear Materials, Other