|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Accelerated Materials Evaluation for Nuclear Application Utilizing Test Reactors, Ion Beam Facilities and Integrated Modeling
||In-situ High-Energy X-ray Study of Neutron Irradiation Effect on Tensile Deformation Behavior of an Fe-Cr Model Alloy
||Xuan Zhang, Chi Xu, Meimei Li, Jun-Sang Park, Peter Kenesei, Jonathan Almer, Kun Mo, Carolyn Tomchik, James F. Stubbins, Jian Gan
|On-Site Speaker (Planned)
In-situ high energy X-ray measurement of a material under deformation offers rich microstructural information that can be directly related to the mechanical state. In this study we used a Fe-9Cr model alloy to investigate the effect of neutron irradiation to a low dose (0.01 dpa) at elevated temperatures (300-450 C). Tensile specimens were irradiated at the Advanced Test Reactor at Idaho National Laboratory, and in-situ room-temperature straining was conducted at the Advanced Photon Source at Argonne National Laboratory. Tensile tests showed irradiation-induced hardening and reduction in ductility, and the in-situ X-ray data provided insights into the deformation mechanism through analysis of lattice strain evolution and dislocation kinetics. High-energy X-ray diffraction microscopy was also employed to study the microstructural response to deformation at the grain level in 3D at different locations of the gauge, which could provide new insight into strain localization and failure mechanisms in the irradiated Fe-Cr model alloy.
||Planned: A print-only volume