|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Accelerated Materials Evaluation for Nuclear Application Utilizing Test Reactors, Ion Beam Facilities and Integrated Modeling
||Simulation and Experimental Investigation on the Applications of Nonlinear Ultrasonic Techniques in Non-destructive Probes of Nuclear Materials
||Shenyang Hu, Wahyu Setyawan, Yulan Li, Chuck H. Henager
|On-Site Speaker (Planned)
Nonlinear ultrasonic(NLU)techniques are a promising tool to non-destructively probe microstructure development in irradiated materials. However, fundamental understanding of the relationship between measured signals and microstructural features is still lacking but are key for the application of NLU technique in monitoring property degradation. In this work, thermal annealing and deformation were used to prepare samples with different microstructures, such as second phase precipitates and dislocations in Fe-1%Cu alloys. Microstructures were characterized with SEM, TEM and APT, and the effect of microstructure on NLU response was measured by a pitch-and-catch ultrasonic measurement system. Molecular dynamics methods and a microstructural-based phase-field model were used to study the effect of defects on NLU response. The relationships between the measured ultrasonic harmonics and the parameters characterizing microstructural defects, which were obtained by experiments and simulations, will be presented. The sensitivity of NLU signals to nanosized defects will be discussed and presented.
||Planned: Supplemental Proceedings volume