|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Thermo-mechanical Response of Materials with Special Emphasis on In-situ Techniques
||Predicting Bulk Mechanical Properties of Ferritic-martensitic Steel Using In-situ TEM Tensile Experiments and Crystal Plasticity Modeling
||Heungrok Kwon, Woojin Jeong, Myoung-Gyu Lee, Dongchan Jang
|On-Site Speaker (Planned)
One of the biggest challenges in developing radiation-tolerant materials for nuclear energy systems is the quantitative characterization of irradiation effects that materials will reach during the operation, but the neutron source giving off such a high flux is rarely available. Alternatively, protons have been considered as a candidate to replace neutrons since they are easily producible and their effects are known to be compatible with those of neutrons. However, the serious drawback for using protons is their shallow penetration depth, and thereby it is required to establish a methodology to quantitatively estimate bulk properties from the restricted volume.
In this study, in-situ TEM tensile tests were conducted to observe plastic deformation behavior and to measure local mechanical properties on the order of the smallest microstructural unit, i.e., lath in ferritic-martensitic steel. Furthermore, we combined the in-situ nanomechanical experimental results with crystal plasticity modeling to computationally reconstruct the bulk mechanical properties.
||Planned: Supplemental Proceedings volume