Investigation of High-Energy Ion-Irradiated MA957 Using Synchrotron Radiation under In-Situ Tension
AbstractIn this study, an MA957 oxide dispersion-strengthened (ODS) alloy was irradiated with high-energy ions in the Argonne Tandem Linac Accelerator System. Fe ions at an energy of 84 MeV bombarded MA957 tensile specimens, creating a damage region ~7.5 μm in depth; the peak damage (~40 dpa) was estimated to be at ~7 μm from the surface. Following the irradiation, in-situ high-energy X-ray diffraction measurements were performed at the Advanced Photon Source in order to study the dynamic deformation behavior of the specimens after ion irradiation damage. In-situ X-ray measurements taken during tensile testing of the ion-irradiated MA957 revealed a difference in loading behavior between the irradiated and un-irradiated regions of the specimen. At equivalent applied stresses, lower lattice strains were found in the radiation-damaged region than those in the un-irradiated region. This might be associated with a higher level of Type II stresses as a result of radiation hardening. The study has demonstrated the feasibility of combining high-energy ion radiation and high-energy synchrotron X-ray diffraction to study materials’ radiation damage in a dynamic manner. View Full-Text
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Mo, K.; Yun, D.; Miao, Y.; Liu, X.; Pellin, M.; Almer, J.; Park, J.-S.; Stubbins, J.F.; Zhu, S.; Yacout, A.M. Investigation of High-Energy Ion-Irradiated MA957 Using Synchrotron Radiation under In-Situ Tension. Materials 2016, 9, 15.
Mo K, Yun D, Miao Y, Liu X, Pellin M, Almer J, Park J-S, Stubbins JF, Zhu S, Yacout AM. Investigation of High-Energy Ion-Irradiated MA957 Using Synchrotron Radiation under In-Situ Tension. Materials. 2016; 9(1):15.Chicago/Turabian Style
Mo, Kun; Yun, Di; Miao, Yinbin; Liu, Xiang; Pellin, Michael; Almer, Jonathan; Park, Jun-Sang; Stubbins, James F.; Zhu, Shaofei; Yacout, Abdellatif M. 2016. "Investigation of High-Energy Ion-Irradiated MA957 Using Synchrotron Radiation under In-Situ Tension." Materials 9, no. 1: 15.
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